AyeCode / invoicing

includes/wpinv-payment-functions.php

Spacing +161 added lines, -161 removed lines

@@ -1,6 +1,6 @@ 
 <?php
-function wpinv_get_subscriptions( $args = array() ) {
-    if ( empty( $args['parent_invoice_id'] ) ) {
+function wpinv_get_subscriptions($args = array()) {
+    if (empty($args['parent_invoice_id'])) {
         return false;
     }
     
@@ -14,18 +14,18 @@ 
     );
 
     $args['post_parent']    = $args['parent_invoice_id'];
-    $args                   = wp_parse_args( $args, $defaults );
+    $args                   = wp_parse_args($args, $defaults);
 
-    if( $args['numberposts'] < 1 ) {
+    if ($args['numberposts'] < 1) {
         $args['numberposts'] = 999999999999;
     }
 
-    $posts          = get_posts( $args );
+    $posts          = get_posts($args);
     $subscriptions  = array();
-    if ( !empty( $posts ) ) {
-        foreach ( $posts as $post ) {
-            if ( !empty( $post->ID ) ) {
-                $subscriptions[] = wpinv_get_invoice( $post->ID );
+    if (!empty($posts)) {
+        foreach ($posts as $post) {
+            if (!empty($post->ID)) {
+                $subscriptions[] = wpinv_get_invoice($post->ID);
             }
         }
     }
@@ -33,19 +33,19 @@ 
     
     return $subscriptions;
 }
-function wpinv_get_subscription( $id = 0, $by_profile_id = false ) {
+function wpinv_get_subscription($id = 0, $by_profile_id = false) {
     global $wpdb;
 
-    if ( empty( $id ) ) {
+    if (empty($id)) {
         return false;
     }
 
-    $id = esc_sql( $id );
+    $id = esc_sql($id);
 
-    $invoice_id = $wpdb->get_var( "SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wpinv_profile_id' AND meta_value = '{$id}' LIMIT 1" );
+    $invoice_id = $wpdb->get_var("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wpinv_profile_id' AND meta_value = '{$id}' LIMIT 1");
 
-    if ( $invoice_id != null ) {
-        return wpinv_get_invoice( $invoice_id );
+    if ($invoice_id != null) {
+        return wpinv_get_invoice($invoice_id);
     }
 
     return false;
@@ -55,47 +55,47 @@ 
  * Records a new payment on the subscription
  * 
  */
-function wpinv_recurring_add_subscription_payment( $parent_invoice_id, $subscription_args = array() ) {    
-    $args = wp_parse_args( $subscription_args, array(
+function wpinv_recurring_add_subscription_payment($parent_invoice_id, $subscription_args = array()) {    
+    $args = wp_parse_args($subscription_args, array(
         'amount'         => '',
         'transaction_id' => '',
         'gateway'        => ''
-    ) );
+    ));
 
-    if ( wpinv_payment_exists( $args['transaction_id'] ) ) {
+    if (wpinv_payment_exists($args['transaction_id'])) {
         return false;
     }
     
-    $parent_invoice = wpinv_get_invoice( $parent_invoice_id );
-    if ( empty( $parent_invoice ) ) {
+    $parent_invoice = wpinv_get_invoice($parent_invoice_id);
+    if (empty($parent_invoice)) {
         return;
     }
 
     $invoice = new WPInv_Invoice();
-    $invoice->set( 'post_type', 'wpi_invoice' );
-    $invoice->set( 'parent_invoice', $parent_invoice_id );
-    $invoice->set( 'currency', $parent_invoice->get_currency() );
-    $invoice->set( 'transaction_id', $args['transaction_id'] );
-    $invoice->set( 'key', $parent_invoice->generate_key() );
-    $invoice->set( 'ip', $parent_invoice->ip );
-    $invoice->set( 'user_id', $parent_invoice->get_user_id() );
-    $invoice->set( 'first_name', $parent_invoice->get_first_name() );
-    $invoice->set( 'last_name', $parent_invoice->get_last_name() );
-    $invoice->set( 'phone', $parent_invoice->phone );
-    $invoice->set( 'address', $parent_invoice->address );
-    $invoice->set( 'city', $parent_invoice->city );
-    $invoice->set( 'country', $parent_invoice->country );
-    $invoice->set( 'state', $parent_invoice->state );
-    $invoice->set( 'zip', $parent_invoice->zip );
-    $invoice->set( 'company', $parent_invoice->company );
-    $invoice->set( 'vat_number', $parent_invoice->vat_number );
-    $invoice->set( 'vat_rate', $parent_invoice->vat_rate );
-    $invoice->set( 'adddress_confirmed', $parent_invoice->adddress_confirmed );
-
-    if ( empty( $args['gateway'] ) ) {
-        $invoice->set( 'gateway', $parent_invoice->get_gateway() );
+    $invoice->set('post_type', 'wpi_invoice');
+    $invoice->set('parent_invoice', $parent_invoice_id);
+    $invoice->set('currency', $parent_invoice->get_currency());
+    $invoice->set('transaction_id', $args['transaction_id']);
+    $invoice->set('key', $parent_invoice->generate_key());
+    $invoice->set('ip', $parent_invoice->ip);
+    $invoice->set('user_id', $parent_invoice->get_user_id());
+    $invoice->set('first_name', $parent_invoice->get_first_name());
+    $invoice->set('last_name', $parent_invoice->get_last_name());
+    $invoice->set('phone', $parent_invoice->phone);
+    $invoice->set('address', $parent_invoice->address);
+    $invoice->set('city', $parent_invoice->city);
+    $invoice->set('country', $parent_invoice->country);
+    $invoice->set('state', $parent_invoice->state);
+    $invoice->set('zip', $parent_invoice->zip);
+    $invoice->set('company', $parent_invoice->company);
+    $invoice->set('vat_number', $parent_invoice->vat_number);
+    $invoice->set('vat_rate', $parent_invoice->vat_rate);
+    $invoice->set('adddress_confirmed', $parent_invoice->adddress_confirmed);
+
+    if (empty($args['gateway'])) {
+        $invoice->set('gateway', $parent_invoice->get_gateway());
     } else {
-        $invoice->set( 'gateway', $args['gateway'] );
+        $invoice->set('gateway', $args['gateway']);
     }
     
     $recurring_details = $parent_invoice->get_recurring_details();
@@ -103,11 +103,11 @@ 
     // increase the earnings for each item in the subscription
     $items = $recurring_details['cart_details'];
     
-    if ( $items ) {        
+    if ($items) {        
         $add_items      = array();
         $cart_details   = array();
         
-        foreach ( $items as $item ) {
+        foreach ($items as $item) {
             $add_item             = array();
             $add_item['id']       = $item['id'];
             $add_item['quantity'] = $item['quantity'];
@@ -117,7 +117,7 @@ 
             break;
         }
         
-        $invoice->set( 'items', $add_items );
+        $invoice->set('items', $add_items);
         $invoice->cart_details = $cart_details;
     }
     
@@ -127,277 +127,277 @@ 
     $tax                = $recurring_details['tax'];
     $discount           = $recurring_details['discount'];
     
-    if ( $discount > 0 ) {
-        $invoice->set( 'discount_code', $parent_invoice->discount_code );
+    if ($discount > 0) {
+        $invoice->set('discount_code', $parent_invoice->discount_code);
     }
     
-    $invoice->subtotal = wpinv_round_amount( $subtotal );
-    $invoice->tax      = wpinv_round_amount( $tax );
-    $invoice->discount = wpinv_round_amount( $discount );
-    $invoice->total    = wpinv_round_amount( $total );
+    $invoice->subtotal = wpinv_round_amount($subtotal);
+    $invoice->tax      = wpinv_round_amount($tax);
+    $invoice->discount = wpinv_round_amount($discount);
+    $invoice->total    = wpinv_round_amount($total);
     $invoice->save();
     
-    wpinv_update_payment_status( $invoice->ID, 'publish' );
+    wpinv_update_payment_status($invoice->ID, 'publish');
     sleep(1);
-    wpinv_update_payment_status( $invoice->ID, 'wpi-renewal' );
+    wpinv_update_payment_status($invoice->ID, 'wpi-renewal');
     
-    $invoice = wpinv_get_invoice( $invoice->ID );
+    $invoice = wpinv_get_invoice($invoice->ID);
     
-    $subscription_data                      = wpinv_payment_subscription_data( $parent_invoice );
+    $subscription_data                      = wpinv_payment_subscription_data($parent_invoice);
     $subscription_data['recurring_amount']  = $invoice->get_total();
-    $subscription_data['created']           = current_time( 'mysql', 0 );
-    $subscription_data['expiration']        = $invoice->get_new_expiration( $subscription_data['item_id'] );
+    $subscription_data['created']           = current_time('mysql', 0);
+    $subscription_data['expiration']        = $invoice->get_new_expiration($subscription_data['item_id']);
     
     // Retrieve pending subscription from database and update it's status to active and set proper profile ID
-    $invoice->update_subscription( $subscription_data );
+    $invoice->update_subscription($subscription_data);
 
-    do_action( 'wpinv_recurring_add_subscription_payment', $invoice, $parent_invoice, $subscription_args );
-    do_action( 'wpinv_recurring_record_payment', $invoice->ID, $parent_invoice_id, $subscription_args );
+    do_action('wpinv_recurring_add_subscription_payment', $invoice, $parent_invoice, $subscription_args);
+    do_action('wpinv_recurring_record_payment', $invoice->ID, $parent_invoice_id, $subscription_args);
 
     return $invoice;
 }
 
-function wpinv_payment_exists( $txn_id = '' ) {
+function wpinv_payment_exists($txn_id = '') {
     global $wpdb;
 
-    if ( empty( $txn_id ) ) {
+    if (empty($txn_id)) {
         return false;
     }
 
-    $txn_id = esc_sql( $txn_id );
+    $txn_id = esc_sql($txn_id);
 
-    $invoice = $wpdb->get_var( "SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wpinv_transaction_id' AND meta_value = '{$txn_id}' LIMIT 1" );
+    $invoice = $wpdb->get_var("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wpinv_transaction_id' AND meta_value = '{$txn_id}' LIMIT 1");
 
-    if ( $invoice != null ) {
+    if ($invoice != null) {
         return true;
     }
 
     return false;
 }
 
-function wpinv_is_subscription_payment( $invoice = '' ) {
-    if ( empty( $invoice ) ) {
+function wpinv_is_subscription_payment($invoice = '') {
+    if (empty($invoice)) {
         return false;
     }
     
-    if ( !is_object( $invoice ) && is_scalar( $invoice ) ) {
-        $invoice = wpinv_get_invoice( $invoice );
+    if (!is_object($invoice) && is_scalar($invoice)) {
+        $invoice = wpinv_get_invoice($invoice);
     }
     
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return false;
     }
         
-    if ( $invoice->is_renewal() ) {
+    if ($invoice->is_renewal()) {
         return true;
     }
 
     return false;
 }
 
-function wpinv_payment_subscription_data( $invoice = '' ) {
-    if ( empty( $invoice ) ) {
+function wpinv_payment_subscription_data($invoice = '') {
+    if (empty($invoice)) {
         return false;
     }
     
-    if ( !is_object( $invoice ) && is_scalar( $invoice ) ) {
-        $invoice = wpinv_get_invoice( $invoice );
+    if (!is_object($invoice) && is_scalar($invoice)) {
+        $invoice = wpinv_get_invoice($invoice);
     }
     
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return false;
     }    
 
     return $invoice->get_subscription_data();
 }
 
-function wpinv_payment_link_transaction_id( $invoice = '' ) {
-    if ( empty( $invoice ) ) {
+function wpinv_payment_link_transaction_id($invoice = '') {
+    if (empty($invoice)) {
         return false;
     }
     
-    if ( !is_object( $invoice ) && is_scalar( $invoice ) ) {
-        $invoice = wpinv_get_invoice( $invoice );
+    if (!is_object($invoice) && is_scalar($invoice)) {
+        $invoice = wpinv_get_invoice($invoice);
     }
     
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return false;
     }
 
-    return apply_filters( 'wpinv_payment_details_transaction_id-' . $invoice->gateway, $invoice->get_transaction_id(), $invoice->ID, $invoice );
+    return apply_filters('wpinv_payment_details_transaction_id-' . $invoice->gateway, $invoice->get_transaction_id(), $invoice->ID, $invoice);
 }
 
-function wpinv_get_pretty_subscription_period( $period ) {
+function wpinv_get_pretty_subscription_period($period) {
     $frequency = '';
     //Format period details
-    switch ( $period ) {
+    switch ($period) {
         case 'D' :
         case 'day' :
-            $frequency = __( 'Daily', 'invoicing' );
+            $frequency = __('Daily', 'invoicing');
             break;
         case 'W' :
         case 'week' :
-            $frequency = __( 'Weekly', 'invoicing' );
+            $frequency = __('Weekly', 'invoicing');
             break;
         case 'M' :
         case 'month' :
-            $frequency = __( 'Monthly', 'invoicing' );
+            $frequency = __('Monthly', 'invoicing');
             break;
         case 'Y' :
         case 'year' :
-            $frequency = __( 'Yearly', 'invoicing' );
+            $frequency = __('Yearly', 'invoicing');
             break;
         default :
-            $frequency = apply_filters( 'wpinv_pretty_subscription_period', $frequency, $period );
+            $frequency = apply_filters('wpinv_pretty_subscription_period', $frequency, $period);
             break;
     }
 
     return $frequency;
 }
 
-function wpinv_get_pretty_subscription_period_name( $period ) {
+function wpinv_get_pretty_subscription_period_name($period) {
     $frequency = '';
     //Format period details
-    switch ( $period ) {
+    switch ($period) {
         case 'D' :
         case 'day' :
-            $frequency = __( 'Day', 'invoicing' );
+            $frequency = __('Day', 'invoicing');
             break;
         case 'W' :
         case 'week' :
-            $frequency = __( 'Week', 'invoicing' );
+            $frequency = __('Week', 'invoicing');
             break;
         case 'M' :
         case 'month' :
-            $frequency = __( 'Month', 'invoicing' );
+            $frequency = __('Month', 'invoicing');
             break;
         case 'Y' :
         case 'year' :
-            $frequency = __( 'Year', 'invoicing' );
+            $frequency = __('Year', 'invoicing');
             break;
         default :
-            $frequency = apply_filters( 'wpinv_pretty_subscription_period_name', $frequency, $period );
+            $frequency = apply_filters('wpinv_pretty_subscription_period_name', $frequency, $period);
             break;
     }
 
     return $frequency;
 }
 
-function wpinv_subscription_initial_payment_desc( $amount, $period, $interval, $trial_period = '', $trial_interval = 0 ) {
+function wpinv_subscription_initial_payment_desc($amount, $period, $interval, $trial_period = '', $trial_interval = 0) {
     $interval   = (int)$interval > 0 ? (int)$interval : 1;
     
-    if ( $trial_interval > 0 && !empty( $trial_period ) ) {
-        $amount = __( 'Free', 'invoicing' );
+    if ($trial_interval > 0 && !empty($trial_period)) {
+        $amount = __('Free', 'invoicing');
         $interval = $trial_interval;
         $period = $trial_period;
     }
     
     $description = '';
-    switch ( $period ) {
+    switch ($period) {
         case 'D' :
         case 'day' :
-            $description = wp_sprintf( _n( '%s for the first day.', '%s for the first %d days.', $interval, 'invoicing' ), $amount, $interval );
+            $description = wp_sprintf(_n('%s for the first day.', '%s for the first %d days.', $interval, 'invoicing'), $amount, $interval);
             break;
         case 'W' :
         case 'week' :
-            $description = wp_sprintf( _n( '%s for the first week.', '%s for the first %d weeks.', $interval, 'invoicing' ), $amount, $interval );
+            $description = wp_sprintf(_n('%s for the first week.', '%s for the first %d weeks.', $interval, 'invoicing'), $amount, $interval);
             break;
         case 'M' :
         case 'month' :
-            $description = wp_sprintf( _n( '%s for the first month.', '%s for the first %d months.', $interval, 'invoicing' ), $amount, $interval );
+            $description = wp_sprintf(_n('%s for the first month.', '%s for the first %d months.', $interval, 'invoicing'), $amount, $interval);
             break;
         case 'Y' :
         case 'year' :
-            $description = wp_sprintf( _n( '%s for the first year.', '%s for the first %d years.', $interval, 'invoicing' ), $amount, $interval );
+            $description = wp_sprintf(_n('%s for the first year.', '%s for the first %d years.', $interval, 'invoicing'), $amount, $interval);
             break;
     }
 
-    return apply_filters( 'wpinv_subscription_initial_payment_desc', $description, $amount, $period, $interval, $trial_period, $trial_interval  );
+    return apply_filters('wpinv_subscription_initial_payment_desc', $description, $amount, $period, $interval, $trial_period, $trial_interval);
 }
 
-function wpinv_subscription_recurring_payment_desc( $amount, $period, $interval, $bill_times = 0, $trial_period = '', $trial_interval = 0 ) {
+function wpinv_subscription_recurring_payment_desc($amount, $period, $interval, $bill_times = 0, $trial_period = '', $trial_interval = 0) {
     $interval   = (int)$interval > 0 ? (int)$interval : 1;
     $bill_times = (int)$bill_times > 0 ? (int)$bill_times : 0;
     
     $description = '';
-    switch ( $period ) {
+    switch ($period) {
         case 'D' :
         case 'day' :            
-            if ( (int)$bill_times > 0 ) {
-                if ( $interval > 1 ) {
-                    if ( $bill_times > 1 ) {
-                        $description = wp_sprintf( __( '%s for each %d days, for %d installments.', 'invoicing' ), $amount, $interval, $bill_times );
+            if ((int)$bill_times > 0) {
+                if ($interval > 1) {
+                    if ($bill_times > 1) {
+                        $description = wp_sprintf(__('%s for each %d days, for %d installments.', 'invoicing'), $amount, $interval, $bill_times);
                     } else {
-                        $description = wp_sprintf( __( '%s for %d days.', 'invoicing' ), $amount, $interval );
+                        $description = wp_sprintf(__('%s for %d days.', 'invoicing'), $amount, $interval);
                     }
                 } else {
-                    $description = wp_sprintf( _n( '%s for one day.', '%s for each day, for %d installments.', $bill_times, 'invoicing' ), $amount, $bill_times );
+                    $description = wp_sprintf(_n('%s for one day.', '%s for each day, for %d installments.', $bill_times, 'invoicing'), $amount, $bill_times);
                 }
             } else {
-                $description = wp_sprintf( _n( '%s for each day.', '%s for each %d days.', $interval, 'invoicing'), $amount, $interval );
+                $description = wp_sprintf(_n('%s for each day.', '%s for each %d days.', $interval, 'invoicing'), $amount, $interval);
             }
             break;
         case 'W' :
         case 'week' :            
-            if ( (int)$bill_times > 0 ) {
-                if ( $interval > 1 ) {
-                    if ( $bill_times > 1 ) {
-                        $description = wp_sprintf( __( '%s for each %d weeks, for %d installments.', 'invoicing' ), $amount, $interval, $bill_times );
+            if ((int)$bill_times > 0) {
+                if ($interval > 1) {
+                    if ($bill_times > 1) {
+                        $description = wp_sprintf(__('%s for each %d weeks, for %d installments.', 'invoicing'), $amount, $interval, $bill_times);
                     } else {
-                        $description = wp_sprintf( __( '%s for %d weeks.', 'invoicing' ), $amount, $interval );
+                        $description = wp_sprintf(__('%s for %d weeks.', 'invoicing'), $amount, $interval);
                     }
                 } else {
-                    $description = wp_sprintf( _n( '%s for one week.', '%s for each week, for %d installments.', $bill_times, 'invoicing' ), $amount, $bill_times );
+                    $description = wp_sprintf(_n('%s for one week.', '%s for each week, for %d installments.', $bill_times, 'invoicing'), $amount, $bill_times);
                 }
             } else {
-                $description = wp_sprintf( _n( '%s for each week.', '%s for each %d weeks.', $interval, 'invoicing' ), $amount, $interval );
+                $description = wp_sprintf(_n('%s for each week.', '%s for each %d weeks.', $interval, 'invoicing'), $amount, $interval);
             }
             break;
         case 'M' :
         case 'month' :            
-            if ( (int)$bill_times > 0 ) {
-                if ( $interval > 1 ) {
-                    if ( $bill_times > 1 ) {
-                        $description = wp_sprintf( __( '%s for each %d months, for %d installments.', 'invoicing' ), $amount, $interval, $bill_times );
+            if ((int)$bill_times > 0) {
+                if ($interval > 1) {
+                    if ($bill_times > 1) {
+                        $description = wp_sprintf(__('%s for each %d months, for %d installments.', 'invoicing'), $amount, $interval, $bill_times);
                     } else {
-                        $description = wp_sprintf( __( '%s for %d months.', 'invoicing' ), $amount, $interval );
+                        $description = wp_sprintf(__('%s for %d months.', 'invoicing'), $amount, $interval);
                     }
                 } else {
-                    $description = wp_sprintf( _n( '%s for one month.', '%s for each month, for %d installments.', $bill_times, 'invoicing' ), $amount, $bill_times );
+                    $description = wp_sprintf(_n('%s for one month.', '%s for each month, for %d installments.', $bill_times, 'invoicing'), $amount, $bill_times);
                 }
             } else {
-                $description = wp_sprintf( _n( '%s for each month.', '%s for each %d months.', $interval, 'invoicing' ), $amount, $interval );
+                $description = wp_sprintf(_n('%s for each month.', '%s for each %d months.', $interval, 'invoicing'), $amount, $interval);
             }
             break;
         case 'Y' :
         case 'year' :            
-            if ( (int)$bill_times > 0 ) {
-                if ( $interval > 1 ) {
-                    if ( $bill_times > 1 ) {
-                        $description = wp_sprintf( __( '%s for each %d years, for %d installments.', 'invoicing' ), $amount, $interval, $bill_times );
+            if ((int)$bill_times > 0) {
+                if ($interval > 1) {
+                    if ($bill_times > 1) {
+                        $description = wp_sprintf(__('%s for each %d years, for %d installments.', 'invoicing'), $amount, $interval, $bill_times);
                     } else {
-                        $description = wp_sprintf( __( '%s for %d years.', 'invoicing'), $amount, $interval );
+                        $description = wp_sprintf(__('%s for %d years.', 'invoicing'), $amount, $interval);
                     }
                 } else {
-                    $description = wp_sprintf( _n( '%s for one year.', '%s for each year, for %d installments.', $bill_times, 'invoicing' ), $amount, $bill_times );
+                    $description = wp_sprintf(_n('%s for one year.', '%s for each year, for %d installments.', $bill_times, 'invoicing'), $amount, $bill_times);
                 }
             } else {
-                $description = wp_sprintf( _n( '%s for each year.', '%s for each %d years.', $interval, 'invoicing' ), $amount, $interval );
+                $description = wp_sprintf(_n('%s for each year.', '%s for each %d years.', $interval, 'invoicing'), $amount, $interval);
             }
             break;
     }
 
-    return apply_filters( 'wpinv_subscription_recurring_payment_desc', $description, $amount, $period, $interval, $bill_times, $trial_period, $trial_interval );
+    return apply_filters('wpinv_subscription_recurring_payment_desc', $description, $amount, $period, $interval, $bill_times, $trial_period, $trial_interval);
 }
 
-function wpinv_subscription_payment_desc( $invoice ) {
-    if ( empty( $invoice ) ) {
+function wpinv_subscription_payment_desc($invoice) {
+    if (empty($invoice)) {
         return NULL;
     }
     
     $description = '';
-    if ( $invoice->is_parent() && $item = $invoice->get_recurring( true ) ) {
-        if ( $item->has_free_trial() ) {
+    if ($invoice->is_parent() && $item = $invoice->get_recurring(true)) {
+        if ($item->has_free_trial()) {
             $trial_period = $item->get_trial_period();
             $trial_interval = $item->get_trial_interval();
         } else {
@@ -405,45 +405,45 @@ 
             $trial_interval = 0;
         }
         
-        $description = wpinv_get_billing_cycle( $invoice->get_total(), $invoice->get_recurring_details( 'total' ), $item->get_recurring_period(), $item->get_recurring_interval(), $item->get_recurring_limit(), $trial_period, $trial_interval, $invoice->get_currency() );
+        $description = wpinv_get_billing_cycle($invoice->get_total(), $invoice->get_recurring_details('total'), $item->get_recurring_period(), $item->get_recurring_interval(), $item->get_recurring_limit(), $trial_period, $trial_interval, $invoice->get_currency());
     }
     
-    return apply_filters( 'wpinv_subscription_payment_desc', $description, $invoice );
+    return apply_filters('wpinv_subscription_payment_desc', $description, $invoice);
 }
 
-function wpinv_get_billing_cycle( $initial, $recurring, $period, $interval, $bill_times, $trial_period = '', $trial_interval = 0, $currency = '' ) {
-    $initial_total      = wpinv_round_amount( $initial );
-    $recurring_total    = wpinv_round_amount( $recurring );
+function wpinv_get_billing_cycle($initial, $recurring, $period, $interval, $bill_times, $trial_period = '', $trial_interval = 0, $currency = '') {
+    $initial_total      = wpinv_round_amount($initial);
+    $recurring_total    = wpinv_round_amount($recurring);
     
-    if ( $trial_interval > 0 && !empty( $trial_period ) ) {
+    if ($trial_interval > 0 && !empty($trial_period)) {
         // Free trial
     } else {
-        if ( $bill_times == 1 ) {
+        if ($bill_times == 1) {
             $recurring_total = $initial_total;
-        } else if ( $bill_times > 1 && $initial_total != $recurring_total ) {
+        } else if ($bill_times > 1 && $initial_total != $recurring_total) {
             $bill_times--;
         }
     }
     
-    $initial_amount     = wpinv_price( wpinv_format_amount( $initial_total ), $currency );
-    $recurring_amount   = wpinv_price( wpinv_format_amount( $recurring_total ), $currency );
+    $initial_amount     = wpinv_price(wpinv_format_amount($initial_total), $currency);
+    $recurring_amount   = wpinv_price(wpinv_format_amount($recurring_total), $currency);
     
-    $recurring          = wpinv_subscription_recurring_payment_desc( $recurring_amount, $period, $interval, $bill_times, $trial_period, $trial_interval );
+    $recurring          = wpinv_subscription_recurring_payment_desc($recurring_amount, $period, $interval, $bill_times, $trial_period, $trial_interval);
         
-    if ( $initial_total != $recurring_total ) {
-        $initial        = wpinv_subscription_initial_payment_desc( $initial_amount, $period, $interval, $trial_period, $trial_interval );
+    if ($initial_total != $recurring_total) {
+        $initial        = wpinv_subscription_initial_payment_desc($initial_amount, $period, $interval, $trial_period, $trial_interval);
         
-        $description    = wp_sprintf( __( '%s Then %s', 'invoicing' ), $initial, $recurring );
+        $description    = wp_sprintf(__('%s Then %s', 'invoicing'), $initial, $recurring);
     } else {
         $description    = $recurring;
     }
     
-    return apply_filters( 'wpinv_get_billing_cycle', $description, $initial, $recurring, $period, $interval, $bill_times, $trial_period, $trial_interval, $currency );
+    return apply_filters('wpinv_get_billing_cycle', $description, $initial, $recurring, $period, $interval, $bill_times, $trial_period, $trial_interval, $currency);
 }
 
-function wpinv_recurring_send_payment_failed( $invoice ) {
-    if ( !empty( $invoice->ID ) ) {
-        wpinv_failed_invoice_notification( $invoice->ID );
+function wpinv_recurring_send_payment_failed($invoice) {
+    if (!empty($invoice->ID)) {
+        wpinv_failed_invoice_notification($invoice->ID);
     }
 }
-add_action( 'wpinv_recurring_payment_failed', 'wpinv_recurring_send_payment_failed', 10, 1 );
\ No newline at end of file
+add_action('wpinv_recurring_payment_failed', 'wpinv_recurring_send_payment_failed', 10, 1);
\ No newline at end of file

templates/emails/wpinv-email-invoice-items.php

Spacing +67 added lines, -67 removed lines

@@ -1,6 +1,6 @@ 
 <?php
 // don't load directly
-if ( !defined('ABSPATH') )
+if (!defined('ABSPATH'))
     die('-1');
 
 global $wpinv_euvat, $ajax_cart_details;
@@ -11,152 +11,152 @@ 
 $quantities_enabled = wpinv_item_quantities_enabled();
 $use_taxes          = wpinv_use_taxes();
 $zero_tax           = !(float)$invoice->get_tax() > 0 ? true : false;
-$tax_label          = $use_taxes && $invoice->has_vat() ? $wpinv_euvat->get_vat_name() : __( 'Tax', 'invoicing' );
-$tax_title          = !$zero_tax && $use_taxes ? ( wpinv_prices_include_tax() ? wp_sprintf( __( '(%s Incl.)', 'invoicing' ), $tax_label ) : wp_sprintf( __( '(%s Excl.)', 'invoicing' ), $tax_label ) ) : '';
+$tax_label          = $use_taxes && $invoice->has_vat() ? $wpinv_euvat->get_vat_name() : __('Tax', 'invoicing');
+$tax_title          = !$zero_tax && $use_taxes ? (wpinv_prices_include_tax() ? wp_sprintf(__('(%s Incl.)', 'invoicing'), $tax_label) : wp_sprintf(__('(%s Excl.)', 'invoicing'), $tax_label)) : '';
 
-do_action( 'wpinv_before_email_items', $invoice ); ?>
+do_action('wpinv_before_email_items', $invoice); ?>
 <div id="wpinv-email-items">
-    <h3 class="wpinv-items-t"><?php echo apply_filters( 'wpinv_email_items_title', __( 'Items', 'invoicing' ) ); ?></h3>
+    <h3 class="wpinv-items-t"><?php echo apply_filters('wpinv_email_items_title', __('Items', 'invoicing')); ?></h3>
     <table id="wpinv_checkout_cart" class="table table-bordered table-hover">
         <thead>
             <tr class="wpinv_cart_header_row">
-                <?php do_action( 'wpinv_email_items_table_header_first' ); ?>
-                <th class="wpinv_cart_item_name text-left"><?php _e( 'Item Name', 'invoicing' ); ?></th>
-                <th class="wpinv_cart_item_price text-right"><?php _e( 'Item Price', 'invoicing' ); ?></th>
-                <?php if ( $quantities_enabled ) { ?>
-                <th class="wpinv_cart_item_qty text-right"><?php _e( 'Qty', 'invoicing' ); ?></th>
+                <?php do_action('wpinv_email_items_table_header_first'); ?>
+                <th class="wpinv_cart_item_name text-left"><?php _e('Item Name', 'invoicing'); ?></th>
+                <th class="wpinv_cart_item_price text-right"><?php _e('Item Price', 'invoicing'); ?></th>
+                <?php if ($quantities_enabled) { ?>
+                <th class="wpinv_cart_item_qty text-right"><?php _e('Qty', 'invoicing'); ?></th>
                 <?php } ?>
-                <?php if ( !$zero_tax && $use_taxes ) { ?>
+                <?php if (!$zero_tax && $use_taxes) { ?>
                 <th class="wpinv_cart_item_tax text-right"><?php echo $tax_label . ' <span class="normal small">(%)</span>'; ?></th>
                 <?php } ?>
-                <th class="wpinv_cart_item_subtotal text-right"><?php echo __( 'Item Total', 'invoicing' ) . ' <span class="normal small">' . $tax_title . '<span>'; ?></th>
-                <?php do_action( 'wpinv_email_items_table_header_last' ); ?>
+                <th class="wpinv_cart_item_subtotal text-right"><?php echo __('Item Total', 'invoicing') . ' <span class="normal small">' . $tax_title . '<span>'; ?></th>
+                <?php do_action('wpinv_email_items_table_header_last'); ?>
             </tr>
         </thead>
         <tbody>
             <?php
-                do_action( 'wpinv_email_items_before' );
-                if ( $cart_items ) {
-                    foreach ( $cart_items as $key => $item ) {
-                        $wpi_item = $item['id'] ? new WPInv_Item( $item['id'] ) : NULL;
+                do_action('wpinv_email_items_before');
+                if ($cart_items) {
+                    foreach ($cart_items as $key => $item) {
+                        $wpi_item = $item['id'] ? new WPInv_Item($item['id']) : NULL;
                     ?>
-                    <tr class="wpinv_cart_item" id="wpinv_cart_item_<?php echo esc_attr( $key ) . '_' . esc_attr( $item['id'] ); ?>" data-item-id="<?php echo esc_attr( $item['id'] ); ?>">
-                        <?php do_action( 'wpinv_email_items_table_body_first', $item ); ?>
+                    <tr class="wpinv_cart_item" id="wpinv_cart_item_<?php echo esc_attr($key) . '_' . esc_attr($item['id']); ?>" data-item-id="<?php echo esc_attr($item['id']); ?>">
+                        <?php do_action('wpinv_email_items_table_body_first', $item); ?>
                         <td class="wpinv_cart_item_name text-left">
                             <?php
-                                if ( current_theme_supports( 'post-thumbnails' ) && has_post_thumbnail( $item['id'] ) ) {
+                                if (current_theme_supports('post-thumbnails') && has_post_thumbnail($item['id'])) {
                                     echo '<div class="wpinv_cart_item_image">';
-                                        echo get_the_post_thumbnail( $item['id'], apply_filters( 'wpinv_checkout_image_size', array( 25,25 ) ) );
+                                        echo get_the_post_thumbnail($item['id'], apply_filters('wpinv_checkout_image_size', array(25, 25)));
                                     echo '</div>';
                                 }
-                                $item_title = esc_html( wpinv_get_cart_item_name( $item ) ) . wpinv_get_item_suffix( $wpi_item );
+                                $item_title = esc_html(wpinv_get_cart_item_name($item)) . wpinv_get_item_suffix($wpi_item);
                                 echo '<span class="wpinv_email_cart_item_title">' . $item_title . '</span>';
                                 
-                                $summary = apply_filters( 'wpinv_email_invoice_line_item_summary', '', $item, $wpi_item, $invoice );
-                                if ( !empty( $summary ) ) {
+                                $summary = apply_filters('wpinv_email_invoice_line_item_summary', '', $item, $wpi_item, $invoice);
+                                if (!empty($summary)) {
                                     echo '<p class="small">' . $summary . '</p>';
                                 }
     
-                                do_action( 'wpinv_email_cart_item_title_after', $item, $key );
+                                do_action('wpinv_email_cart_item_title_after', $item, $key);
                             ?>
                         </td>
                         <td class="wpinv_cart_item_price text-right">
                             <?php 
-                            echo wpinv_cart_item_price( $item );
-                            do_action( 'wpinv_email_cart_item_price_after', $item, $key );
+                            echo wpinv_cart_item_price($item);
+                            do_action('wpinv_email_cart_item_price_after', $item, $key);
                             ?>
                         </td>
-                        <?php if ( $quantities_enabled ) { ?>
+                        <?php if ($quantities_enabled) { ?>
                         <td class="wpinv_cart_item_qty text-right">
                             <?php
-                            echo wpinv_get_cart_item_quantity( $item );
-                            do_action( 'wpinv_email_item_quantitiy', $item, $key );
+                            echo wpinv_get_cart_item_quantity($item);
+                            do_action('wpinv_email_item_quantitiy', $item, $key);
                             ?>
                         </td>
                         <?php } ?>
-                        <?php if ( !$zero_tax && $use_taxes ) { ?>
+                        <?php if (!$zero_tax && $use_taxes) { ?>
                         <td class="wpinv_cart_item_tax text-right">
                             <?php
-                            echo wpinv_cart_item_tax( $item );
-                            do_action( 'wpinv_email_item_tax', $item, $key );
+                            echo wpinv_cart_item_tax($item);
+                            do_action('wpinv_email_item_tax', $item, $key);
                             ?>
                         </td>
                         <?php } ?>
                         <td class="wpinv_cart_item_subtotal text-right">
                             <?php
-                            echo wpinv_cart_item_subtotal( $item );
-                            do_action( 'wpinv_email_item_subtotal', $item, $key );
+                            echo wpinv_cart_item_subtotal($item);
+                            do_action('wpinv_email_item_subtotal', $item, $key);
                             ?>
                         </td>
-                        <?php do_action( 'wpinv_email_items_table_body_last', $item, $key ); ?>
+                        <?php do_action('wpinv_email_items_table_body_last', $item, $key); ?>
                     </tr>
                 <?php } ?>
             <?php } ?>
-            <?php do_action( 'wpinv_email_items_middle' ); ?>
-            <?php do_action( 'wpinv_email_items_after' ); ?>
+            <?php do_action('wpinv_email_items_middle'); ?>
+            <?php do_action('wpinv_email_items_after'); ?>
         </tbody>
         <tfoot>
-            <?php $cart_columns = wpinv_checkout_cart_columns(); if ( $zero_tax && $use_taxes ) { $cart_columns--; } ?>
-            <?php if ( has_action( 'wpinv_email_footer_buttons' ) ) { ?>
+            <?php $cart_columns = wpinv_checkout_cart_columns(); if ($zero_tax && $use_taxes) { $cart_columns--; } ?>
+            <?php if (has_action('wpinv_email_footer_buttons')) { ?>
                 <tr class="wpinv_cart_footer_row">
-                    <?php do_action( 'wpinv_email_items_table_buttons_first', $cart_items ); ?>
-                    <td colspan="<?php echo ( $cart_columns ); ?>">
-                        <?php do_action( 'wpinv_email_footer_buttons' ); ?>
+                    <?php do_action('wpinv_email_items_table_buttons_first', $cart_items); ?>
+                    <td colspan="<?php echo ($cart_columns); ?>">
+                        <?php do_action('wpinv_email_footer_buttons'); ?>
                     </td>
-                    <?php do_action( 'wpinv_email_items_table_buttons_first', $cart_items ); ?>
+                    <?php do_action('wpinv_email_items_table_buttons_first', $cart_items); ?>
                 </tr>
             <?php } ?>
 
-            <?php if ( !$zero_tax && $use_taxes && !wpinv_prices_include_tax() && wpinv_is_cart_taxed() ) { ?>
+            <?php if (!$zero_tax && $use_taxes && !wpinv_prices_include_tax() && wpinv_is_cart_taxed()) { ?>
                 <tr class="wpinv_cart_footer_row wpinv_cart_subtotal_row">
-                    <?php do_action( 'wpinv_email_items_table_subtotal_first', $cart_items ); ?>
-                    <td colspan="<?php echo ( $cart_columns - 1 ); ?>" class="wpinv_cart_subtotal_label text-right">
-                        <strong><?php _e( 'Sub-Total', 'invoicing' ); ?>:</strong>
+                    <?php do_action('wpinv_email_items_table_subtotal_first', $cart_items); ?>
+                    <td colspan="<?php echo ($cart_columns - 1); ?>" class="wpinv_cart_subtotal_label text-right">
+                        <strong><?php _e('Sub-Total', 'invoicing'); ?>:</strong>
                     </td>
                     <td class="wpinv_cart_subtotal text-right">
-                        <span class="wpinv_cart_subtotal_amount bold"><?php echo $invoice->get_subtotal( true ); ?></span>
+                        <span class="wpinv_cart_subtotal_amount bold"><?php echo $invoice->get_subtotal(true); ?></span>
                     </td>
-                    <?php do_action( 'wpinv_email_items_table_subtotal_last', $cart_items, $invoice ); ?>
+                    <?php do_action('wpinv_email_items_table_subtotal_last', $cart_items, $invoice); ?>
                 </tr>
             <?php } ?>
             
-            <?php if ( wpinv_discount( $invoice_id, false ) > 0 ) { ?>
+            <?php if (wpinv_discount($invoice_id, false) > 0) { ?>
                 <tr class="wpinv_cart_footer_row wpinv_cart_discount_row">
-                    <?php do_action( 'wpinv_receipt_items_table_discount_first', $cart_items, $invoice ); ?>
-                    <td colspan="<?php echo ( $cart_columns - 1 ); ?>" class="wpinv_cart_discount_label text-right">
-                        <strong><?php wpinv_get_discount_label( wpinv_discount_code( $invoice_id ) ); ?>:</strong>
+                    <?php do_action('wpinv_receipt_items_table_discount_first', $cart_items, $invoice); ?>
+                    <td colspan="<?php echo ($cart_columns - 1); ?>" class="wpinv_cart_discount_label text-right">
+                        <strong><?php wpinv_get_discount_label(wpinv_discount_code($invoice_id)); ?>:</strong>
                     </td>
                     <td class="wpinv_cart_discount text-right">
-                        <span class="wpinv_cart_discount_amount"><?php echo wpinv_discount( $invoice_id, true, true ); ?></span>
+                        <span class="wpinv_cart_discount_amount"><?php echo wpinv_discount($invoice_id, true, true); ?></span>
                     </td>
-                    <?php do_action( 'wpinv_receipt_items_table_discount_last', $cart_items, $invoice ); ?>
+                    <?php do_action('wpinv_receipt_items_table_discount_last', $cart_items, $invoice); ?>
                 </tr>
             <?php } ?>
 
-            <?php if ( !$zero_tax && $use_taxes && wpinv_is_cart_taxed() ) { ?>
+            <?php if (!$zero_tax && $use_taxes && wpinv_is_cart_taxed()) { ?>
                 <tr class="wpinv_cart_footer_row wpinv_cart_tax_row">
-                    <?php do_action( 'wpinv_email_items_table_tax_first', $cart_items, $invoice ); ?>
-                    <td colspan="<?php echo ( $cart_columns - 1 ); ?>" class="wpinv_cart_tax_label text-right">
+                    <?php do_action('wpinv_email_items_table_tax_first', $cart_items, $invoice); ?>
+                    <td colspan="<?php echo ($cart_columns - 1); ?>" class="wpinv_cart_tax_label text-right">
                         <strong><?php echo $tax_label; ?>:</strong>
                     </td>
                     <td class="wpinv_cart_tax text-right">
-                        <span class="wpinv_cart_tax_amount"><?php echo $invoice->get_tax( true ); ?></span>
+                        <span class="wpinv_cart_tax_amount"><?php echo $invoice->get_tax(true); ?></span>
                     </td>
-                    <?php do_action( 'wpinv_email_items_table_tax_last', $cart_items, $invoice ); ?>
+                    <?php do_action('wpinv_email_items_table_tax_last', $cart_items, $invoice); ?>
                 </tr>
             <?php } ?>
 
             <tr class="wpinv_cart_footer_row">
-                <?php do_action( 'wpinv_email_items_table_footer_first', $cart_items, $invoice ); ?>
-                <td colspan="<?php echo ( $cart_columns - 1 ); ?>" class="wpinv_cart_total_label text-right">
-                    <?php echo apply_filters( 'wpinv_email_cart_total_label', '<strong>' . __( 'Total', 'invoicing' ) . ':</strong>', $invoice ); ?>
+                <?php do_action('wpinv_email_items_table_footer_first', $cart_items, $invoice); ?>
+                <td colspan="<?php echo ($cart_columns - 1); ?>" class="wpinv_cart_total_label text-right">
+                    <?php echo apply_filters('wpinv_email_cart_total_label', '<strong>' . __('Total', 'invoicing') . ':</strong>', $invoice); ?>
                 </td>
                 <td class="wpinv_cart_total text-right">
-                    <span class="wpinv_cart_amount bold"><?php echo $invoice->get_total( true ); ?></span>
+                    <span class="wpinv_cart_amount bold"><?php echo $invoice->get_total(true); ?></span>
                 </td>
-                <?php do_action( 'wpinv_email_items_table_footer_last', $cart_items, $invoice ); ?>
+                <?php do_action('wpinv_email_items_table_footer_last', $cart_items, $invoice); ?>
             </tr>
         </tfoot>
     </table>
 </div>
-<?php do_action( 'wpinv_after_email_items', $invoice ); ?>
\ No newline at end of file
+<?php do_action('wpinv_after_email_items', $invoice); ?>
\ No newline at end of file

templates/wpinv-checkout-cart.php

Spacing +58 added lines, -58 removed lines

@@ -5,138 +5,138 @@
 
 global $wpinv_euvat, $post, $ajax_cart_details, $wpi_cart_columns, $wpi_session;
 $invoice            = wpinv_get_invoice_cart();
-$cart_items         = !empty( $ajax_cart_details ) ? $ajax_cart_details : wpinv_get_cart_content_details();
+$cart_items         = !empty($ajax_cart_details) ? $ajax_cart_details : wpinv_get_cart_content_details();
 $quantities_enabled = wpinv_item_quantities_enabled();
 $use_taxes          = wpinv_use_taxes();
 $tax_label          = $wpinv_euvat->tax_label();
-$tax_title          = $use_taxes ? ( wpinv_prices_include_tax() ? wp_sprintf( __( '(%s Incl.)', 'invoicing' ), $tax_label ) : wp_sprintf( __( '(%s Excl.)', 'invoicing' ), $tax_label ) ) : '';
+$tax_title          = $use_taxes ? (wpinv_prices_include_tax() ? wp_sprintf(__('(%s Incl.)', 'invoicing'), $tax_label) : wp_sprintf(__('(%s Excl.)', 'invoicing'), $tax_label)) : '';
 ?>
 <table id="wpinv_checkout_cart" class="table table-bordered table-hover">
     <thead>
         <tr class="wpinv_cart_header_row">
-            <?php do_action( 'wpinv_checkout_table_header_first' ); ?>
-            <th class="wpinv_cart_item_name text-left"><?php _e( 'Item Name', 'invoicing' ); ?></th>
-            <th class="wpinv_cart_item_price text-right"><?php _e( 'Item Price', 'invoicing' ); ?></th>
-            <?php if ( $quantities_enabled ) { ?>
-            <th class="wpinv_cart_item_qty text-right"><?php _e( 'Qty', 'invoicing' ); ?></th>
+            <?php do_action('wpinv_checkout_table_header_first'); ?>
+            <th class="wpinv_cart_item_name text-left"><?php _e('Item Name', 'invoicing'); ?></th>
+            <th class="wpinv_cart_item_price text-right"><?php _e('Item Price', 'invoicing'); ?></th>
+            <?php if ($quantities_enabled) { ?>
+            <th class="wpinv_cart_item_qty text-right"><?php _e('Qty', 'invoicing'); ?></th>
             <?php } ?>
-            <?php if ( $use_taxes ) { ?>
+            <?php if ($use_taxes) { ?>
             <th class="wpinv_cart_item_tax text-right"><?php echo $tax_label . ' <span class="normal small">(%)</span>'; ?></th>
             <?php } ?>
-            <th class="wpinv_cart_item_subtotal text-right"><?php echo __( 'Item Total', 'invoicing' ) . ' <span class="normal small">' . $tax_title . '<span>'; ?></th>
-            <?php do_action( 'wpinv_checkout_table_header_last' ); ?>
+            <th class="wpinv_cart_item_subtotal text-right"><?php echo __('Item Total', 'invoicing') . ' <span class="normal small">' . $tax_title . '<span>'; ?></th>
+            <?php do_action('wpinv_checkout_table_header_last'); ?>
         </tr>
     </thead>
     <tbody>
         <?php
-            do_action( 'wpinv_cart_items_before' );
+            do_action('wpinv_cart_items_before');
             
-            if ( $cart_items ) {
-                foreach ( $cart_items as $key => $item ) {
-                    $wpi_item = !empty( $item['id'] ) ? new WPInv_Item( $item['id'] ) : NULL;
+            if ($cart_items) {
+                foreach ($cart_items as $key => $item) {
+                    $wpi_item = !empty($item['id']) ? new WPInv_Item($item['id']) : NULL;
                 ?>
-                <tr class="wpinv_cart_item" id="wpinv_cart_item_<?php echo esc_attr( $key ) . '_' . esc_attr( $item['id'] ); ?>" data-item-id="<?php echo esc_attr( $item['id'] ); ?>">
-                    <?php do_action( 'wpinv_checkout_table_body_first', $item ); ?>
+                <tr class="wpinv_cart_item" id="wpinv_cart_item_<?php echo esc_attr($key) . '_' . esc_attr($item['id']); ?>" data-item-id="<?php echo esc_attr($item['id']); ?>">
+                    <?php do_action('wpinv_checkout_table_body_first', $item); ?>
                     <td class="wpinv_cart_item_name text-left">
                         <?php
-                            if ( current_theme_supports( 'post-thumbnails' ) && has_post_thumbnail( $item['id'] ) ) {
+                            if (current_theme_supports('post-thumbnails') && has_post_thumbnail($item['id'])) {
                                 echo '<div class="wpinv_cart_item_image">';
-                                    echo get_the_post_thumbnail( $item['id'], apply_filters( 'wpinv_checkout_image_size', array( 25,25 ) ) );
+                                    echo get_the_post_thumbnail($item['id'], apply_filters('wpinv_checkout_image_size', array(25, 25)));
                                 echo '</div>';
                             }
-                            $item_title = esc_html( wpinv_get_cart_item_name( $item ) ) . wpinv_get_item_suffix( $wpi_item );
+                            $item_title = esc_html(wpinv_get_cart_item_name($item)) . wpinv_get_item_suffix($wpi_item);
                             echo '<span class="wpinv_checkout_cart_item_title">' . $item_title . '</span>';
-                            $summary = apply_filters( 'wpinv_checkout_cart_line_item_summary', '', $item, $wpi_item, $invoice );
-                            if ( !empty( $summary ) ) {
+                            $summary = apply_filters('wpinv_checkout_cart_line_item_summary', '', $item, $wpi_item, $invoice);
+                            if (!empty($summary)) {
                                 echo $summary;
                             }
                         ?>
                     </td>
                     <td class="wpinv_cart_item_price text-right">
                         <?php 
-                        echo wpinv_cart_item_price( $item );
-                        do_action( 'wpinv_checkout_cart_item_price_after', $item, $key );
+                        echo wpinv_cart_item_price($item);
+                        do_action('wpinv_checkout_cart_item_price_after', $item, $key);
                         ?>
                     </td>
-                    <?php if ( $quantities_enabled ) { ?>
+                    <?php if ($quantities_enabled) { ?>
                     <td class="wpinv_cart_item_qty text-right">
                         <?php
-                        echo wpinv_get_cart_item_quantity( $item );
-                        do_action( 'wpinv_cart_item_quantitiy', $item, $key );
+                        echo wpinv_get_cart_item_quantity($item);
+                        do_action('wpinv_cart_item_quantitiy', $item, $key);
                         ?>
                     </td>
                     <?php } ?>
-                    <?php if ( $use_taxes ) { ?>
+                    <?php if ($use_taxes) { ?>
                     <td class="wpinv_cart_item_tax text-right">
                         <?php
-                        echo wpinv_cart_item_tax( $item );
+                        echo wpinv_cart_item_tax($item);
                         //echo wpinv_get_cart_item_tax( $wpi_item->ID, $subtotal = '', $options = array() );
-                        do_action( 'wpinv_cart_item_tax', $item, $key );
+                        do_action('wpinv_cart_item_tax', $item, $key);
                         ?>
                     </td>
                     <?php } ?>
                     <td class="wpinv_cart_item_subtotal text-right">
                         <?php
-                        echo wpinv_cart_item_subtotal( $item );
-                        do_action( 'wpinv_cart_item_subtotal', $item, $key );
+                        echo wpinv_cart_item_subtotal($item);
+                        do_action('wpinv_cart_item_subtotal', $item, $key);
                         ?>
                     </td>
-                    <?php do_action( 'wpinv_checkout_table_body_last', $item, $key ); ?>
+                    <?php do_action('wpinv_checkout_table_body_last', $item, $key); ?>
                 </tr>
             <?php } ?>
         <?php } ?>
-        <?php do_action( 'wpinv_cart_items_middle' ); ?>
-        <?php do_action( 'wpinv_cart_items_after' ); ?>
+        <?php do_action('wpinv_cart_items_middle'); ?>
+        <?php do_action('wpinv_cart_items_after'); ?>
     </tbody>
     <tfoot>
         <?php $cart_columns = wpinv_checkout_cart_columns(); ?>
-        <?php if ( has_action( 'wpinv_cart_footer_buttons' ) ) { ?>
+        <?php if (has_action('wpinv_cart_footer_buttons')) { ?>
             <tr class="wpinv_cart_footer_row">
-                <?php do_action( 'wpinv_checkout_table_buttons_first', $cart_items ); ?>
-                <td colspan="<?php echo ( $cart_columns ); ?>">
-                    <?php do_action( 'wpinv_cart_footer_buttons' ); ?>
+                <?php do_action('wpinv_checkout_table_buttons_first', $cart_items); ?>
+                <td colspan="<?php echo ($cart_columns); ?>">
+                    <?php do_action('wpinv_cart_footer_buttons'); ?>
                 </td>
-                <?php do_action( 'wpinv_checkout_table_buttons_first', $cart_items ); ?>
+                <?php do_action('wpinv_checkout_table_buttons_first', $cart_items); ?>
             </tr>
         <?php } ?>
 
-        <?php if ( $use_taxes && !wpinv_prices_include_tax() ) { ?>
-            <tr class="wpinv_cart_footer_row wpinv_cart_subtotal_row"<?php if ( !wpinv_is_cart_taxed() ) echo ' style="display:none;"'; ?>>
-                <?php do_action( 'wpinv_checkout_table_subtotal_first', $cart_items ); ?>
-                <td colspan="<?php echo ( $cart_columns - 1 ); ?>" class="wpinv_cart_subtotal_label text-right">
-                    <strong><?php _e( 'Sub-Total', 'invoicing' ); ?>:</strong>
+        <?php if ($use_taxes && !wpinv_prices_include_tax()) { ?>
+            <tr class="wpinv_cart_footer_row wpinv_cart_subtotal_row"<?php if (!wpinv_is_cart_taxed()) echo ' style="display:none;"'; ?>>
+                <?php do_action('wpinv_checkout_table_subtotal_first', $cart_items); ?>
+                <td colspan="<?php echo ($cart_columns - 1); ?>" class="wpinv_cart_subtotal_label text-right">
+                    <strong><?php _e('Sub-Total', 'invoicing'); ?>:</strong>
                 </td>
                 <td class="wpinv_cart_subtotal text-right">
-                    <span class="wpinv_cart_subtotal_amount bold"><?php echo wpinv_cart_subtotal( $cart_items ); ?></span>
+                    <span class="wpinv_cart_subtotal_amount bold"><?php echo wpinv_cart_subtotal($cart_items); ?></span>
                 </td>
-                <?php do_action( 'wpinv_checkout_table_subtotal_last', $cart_items ); ?>
+                <?php do_action('wpinv_checkout_table_subtotal_last', $cart_items); ?>
             </tr>
         <?php } ?>
         
-        <?php $wpi_cart_columns = $cart_columns - 1; wpinv_cart_discounts_html( $cart_items ); ?>
+        <?php $wpi_cart_columns = $cart_columns - 1; wpinv_cart_discounts_html($cart_items); ?>
 
-        <?php if ( $use_taxes ) { ?>
-            <tr class="wpinv_cart_footer_row wpinv_cart_tax_row"<?php if( !wpinv_is_cart_taxed() ) echo ' style="display:none;"'; ?>>
-                <?php do_action( 'wpinv_checkout_table_tax_first' ); ?>
-                <td colspan="<?php echo ( $cart_columns - 1 ); ?>" class="wpinv_cart_tax_label text-right">
+        <?php if ($use_taxes) { ?>
+            <tr class="wpinv_cart_footer_row wpinv_cart_tax_row"<?php if (!wpinv_is_cart_taxed()) echo ' style="display:none;"'; ?>>
+                <?php do_action('wpinv_checkout_table_tax_first'); ?>
+                <td colspan="<?php echo ($cart_columns - 1); ?>" class="wpinv_cart_tax_label text-right">
                     <strong><?php echo $tax_label; ?>:</strong>
                 </td>
                 <td class="wpinv_cart_tax text-right">
-                    <span class="wpinv_cart_tax_amount" data-tax="<?php echo wpinv_get_cart_tax( $cart_items ); ?>"><?php echo esc_html( wpinv_cart_tax( $cart_items ) ); ?></span>
+                    <span class="wpinv_cart_tax_amount" data-tax="<?php echo wpinv_get_cart_tax($cart_items); ?>"><?php echo esc_html(wpinv_cart_tax($cart_items)); ?></span>
                 </td>
-                <?php do_action( 'wpinv_checkout_table_tax_last' ); ?>
+                <?php do_action('wpinv_checkout_table_tax_last'); ?>
             </tr>
         <?php } ?>
 
         <tr class="wpinv_cart_footer_row wpinv_cart_total_row">
-            <?php do_action( 'wpinv_checkout_table_footer_first' ); ?>
-            <td colspan="<?php echo ( $cart_columns - 1 ); ?>" class="wpinv_cart_total_label text-right">
-                <?php echo apply_filters( 'wpinv_cart_total_label', '<strong>' . __( 'Total', 'invoicing' ) . ':</strong>', $invoice ); ?>
+            <?php do_action('wpinv_checkout_table_footer_first'); ?>
+            <td colspan="<?php echo ($cart_columns - 1); ?>" class="wpinv_cart_total_label text-right">
+                <?php echo apply_filters('wpinv_cart_total_label', '<strong>' . __('Total', 'invoicing') . ':</strong>', $invoice); ?>
             </td>
             <td class="wpinv_cart_total text-right">
-                <span class="wpinv_cart_amount bold" data-subtotal="<?php echo wpinv_get_cart_total( $cart_items ); ?>" data-total="<?php echo wpinv_get_cart_total( NULL, NULL, $invoice ); ?>"><?php wpinv_cart_total( $cart_items, true, $invoice ); ?></span>
+                <span class="wpinv_cart_amount bold" data-subtotal="<?php echo wpinv_get_cart_total($cart_items); ?>" data-total="<?php echo wpinv_get_cart_total(NULL, NULL, $invoice); ?>"><?php wpinv_cart_total($cart_items, true, $invoice); ?></span>
             </td>
-            <?php do_action( 'wpinv_checkout_table_footer_last' ); ?>
+            <?php do_action('wpinv_checkout_table_footer_last'); ?>
         </tr>
     </tfoot>
 </table>

includes/class-wpinv-item.php

Spacing +125 added lines, -125 removed lines

@@ -1,6 +1,6 @@ 
 <?php
 // Exit if accessed directly
-if ( ! defined( 'ABSPATH' ) ) exit;
+if (!defined('ABSPATH')) exit;
 
 class WPInv_Item {
     public $ID = 0;
@@ -47,26 +47,26 @@ 
     public $filter;
 
 
-    public function __construct( $_id = false, $_args = array() ) {
-        $item = WP_Post::get_instance( $_id );
-        return $this->setup_item( $item );
+    public function __construct($_id = false, $_args = array()) {
+        $item = WP_Post::get_instance($_id);
+        return $this->setup_item($item);
     }
 
-    private function setup_item( $item ) {
-        if( ! is_object( $item ) ) {
+    private function setup_item($item) {
+        if (!is_object($item)) {
             return false;
         }
 
-        if( ! is_a( $item, 'WP_Post' ) ) {
+        if (!is_a($item, 'WP_Post')) {
             return false;
         }
 
-        if( 'wpi_item' !== $item->post_type ) {
+        if ('wpi_item' !== $item->post_type) {
             return false;
         }
 
-        foreach ( $item as $key => $value ) {
-            switch ( $key ) {
+        foreach ($item as $key => $value) {
+            switch ($key) {
                 default:
                     $this->$key = $value;
                     break;
@@ -76,38 +76,38 @@ 
         return true;
     }
 
-    public function __get( $key ) {
-        if ( method_exists( $this, 'get_' . $key ) ) {
-            return call_user_func( array( $this, 'get_' . $key ) );
+    public function __get($key) {
+        if (method_exists($this, 'get_' . $key)) {
+            return call_user_func(array($this, 'get_' . $key));
         } else {
-            return new WP_Error( 'wpinv-item-invalid-property', sprintf( __( 'Can\'t get property %s', 'invoicing' ), $key ) );
+            return new WP_Error('wpinv-item-invalid-property', sprintf(__('Can\'t get property %s', 'invoicing'), $key));
         }
     }
 
-    public function create( $data = array(), $wp_error = false ) {
-        if ( $this->ID != 0 ) {
+    public function create($data = array(), $wp_error = false) {
+        if ($this->ID != 0) {
             return false;
         }
 
         $defaults = array(
             'post_type'   => 'wpi_item',
             'post_status' => 'draft',
-            'post_title'  => __( 'New Invoice Item', 'invoicing' )
+            'post_title'  => __('New Invoice Item', 'invoicing')
         );
 
-        $args = wp_parse_args( $data, $defaults );
+        $args = wp_parse_args($data, $defaults);
 
-        do_action( 'wpinv_item_pre_create', $args );
+        do_action('wpinv_item_pre_create', $args);
 
-        $id = wp_insert_post( $args, $wp_error );
+        $id = wp_insert_post($args, $wp_error);
         if ($wp_error && is_wp_error($id)) {
             return $id;
         }
-        if ( !$id ) {
+        if (!$id) {
             return false;
         }
         
-        $item = WP_Post::get_instance( $id );
+        $item = WP_Post::get_instance($id);
         
         if (!empty($item) && !empty($data['meta'])) {
             $this->ID = $item->ID;
@@ -115,47 +115,47 @@ 
         }
         
         // Set custom id if not set.
-        if ( empty( $data['meta']['custom_id'] ) && !$this->get_custom_id() ) {
-            $this->save_metas( array( 'custom_id' => $id ) );
+        if (empty($data['meta']['custom_id']) && !$this->get_custom_id()) {
+            $this->save_metas(array('custom_id' => $id));
         }
 
-        do_action( 'wpinv_item_create', $id, $args );
+        do_action('wpinv_item_create', $id, $args);
 
-        return $this->setup_item( $item );
+        return $this->setup_item($item);
     }
     
-    public function update( $data = array(), $wp_error = false ) {
-        if ( !$this->ID > 0 ) {
+    public function update($data = array(), $wp_error = false) {
+        if (!$this->ID > 0) {
             return false;
         }
         
         $data['ID'] = $this->ID;
 
-        do_action( 'wpinv_item_pre_update', $data );
+        do_action('wpinv_item_pre_update', $data);
         
-        $id = wp_update_post( $data, $wp_error );
+        $id = wp_update_post($data, $wp_error);
         if ($wp_error && is_wp_error($id)) {
             return $id;
         }
         
-        if ( !$id ) {
+        if (!$id) {
             return false;
         }
 
-        $item = WP_Post::get_instance( $id );
+        $item = WP_Post::get_instance($id);
         if (!empty($item) && !empty($data['meta'])) {
             $this->ID = $item->ID;
             $this->save_metas($data['meta']);
         }
         
         // Set custom id if not set.
-        if ( empty( $data['meta']['custom_id'] ) && !$this->get_custom_id() ) {
-            $this->save_metas( array( 'custom_id' => $id ) );
+        if (empty($data['meta']['custom_id']) && !$this->get_custom_id()) {
+            $this->save_metas(array('custom_id' => $id));
         }
 
-        do_action( 'wpinv_item_update', $id, $data );
+        do_action('wpinv_item_update', $id, $data);
 
-        return $this->setup_item( $item );
+        return $this->setup_item($item);
     }
 
     public function get_ID() {
@@ -163,119 +163,119 @@ 
     }
 
     public function get_name() {
-        return get_the_title( $this->ID );
+        return get_the_title($this->ID);
     }
     
     public function get_title() {
-        return get_the_title( $this->ID );
+        return get_the_title($this->ID);
     }
     
     public function get_status() {
-        return get_post_status( $this->ID );
+        return get_post_status($this->ID);
     }
     
     public function get_summary() {
-        return get_the_excerpt( $this->ID );
+        return get_the_excerpt($this->ID);
     }
 
     public function get_price() {
-        if ( ! isset( $this->price ) ) {
-            $this->price = get_post_meta( $this->ID, '_wpinv_price', true );
+        if (!isset($this->price)) {
+            $this->price = get_post_meta($this->ID, '_wpinv_price', true);
             
-            if ( $this->price ) {
-                $this->price = wpinv_sanitize_amount( $this->price );
+            if ($this->price) {
+                $this->price = wpinv_sanitize_amount($this->price);
             } else {
                 $this->price = 0;
             }
         }
         
-        return apply_filters( 'wpinv_get_item_price', $this->price, $this->ID );
+        return apply_filters('wpinv_get_item_price', $this->price, $this->ID);
     }
     
     public function get_vat_rule() {
         global $wpinv_euvat;
         
-        if( !isset( $this->vat_rule ) ) {
-            $this->vat_rule = get_post_meta( $this->ID, '_wpinv_vat_rule', true );
+        if (!isset($this->vat_rule)) {
+            $this->vat_rule = get_post_meta($this->ID, '_wpinv_vat_rule', true);
 
-            if ( empty( $this->vat_rule ) ) {        
+            if (empty($this->vat_rule)) {        
                 $this->vat_rule = $wpinv_euvat->allow_vat_rules() ? 'digital' : 'physical';
             }
         }
         
-        return apply_filters( 'wpinv_get_item_vat_rule', $this->vat_rule, $this->ID );
+        return apply_filters('wpinv_get_item_vat_rule', $this->vat_rule, $this->ID);
     }
     
     public function get_vat_class() {
-        if( !isset( $this->vat_class ) ) {
-            $this->vat_class = get_post_meta( $this->ID, '_wpinv_vat_class', true );
+        if (!isset($this->vat_class)) {
+            $this->vat_class = get_post_meta($this->ID, '_wpinv_vat_class', true);
 
-            if ( empty( $this->vat_class ) ) {        
+            if (empty($this->vat_class)) {        
                 $this->vat_class = '_standard';
             }
         }
         
-        return apply_filters( 'wpinv_get_item_vat_class', $this->vat_class, $this->ID );
+        return apply_filters('wpinv_get_item_vat_class', $this->vat_class, $this->ID);
     }
 
     public function get_type() {
-        if( ! isset( $this->type ) ) {
-            $this->type = get_post_meta( $this->ID, '_wpinv_type', true );
+        if (!isset($this->type)) {
+            $this->type = get_post_meta($this->ID, '_wpinv_type', true);
 
-            if ( empty( $this->type ) ) {
+            if (empty($this->type)) {
                 $this->type = 'custom';
             }
         }
 
-        return apply_filters( 'wpinv_get_item_type', $this->type, $this->ID );
+        return apply_filters('wpinv_get_item_type', $this->type, $this->ID);
     }
     
     public function get_custom_id() {
-        $custom_id = get_post_meta( $this->ID, '_wpinv_custom_id', true );
+        $custom_id = get_post_meta($this->ID, '_wpinv_custom_id', true);
 
-        return apply_filters( 'wpinv_get_item_custom_id', $custom_id, $this->ID );
+        return apply_filters('wpinv_get_item_custom_id', $custom_id, $this->ID);
     }
     
     public function get_custom_name() {
-        $custom_name = get_post_meta( $this->ID, '_wpinv_custom_name', true );
+        $custom_name = get_post_meta($this->ID, '_wpinv_custom_name', true);
 
-        return apply_filters( 'wpinv_get_item_custom_name', $custom_name, $this->ID );
+        return apply_filters('wpinv_get_item_custom_name', $custom_name, $this->ID);
     }
     
     public function get_custom_singular_name() {
-        $custom_singular_name = get_post_meta( $this->ID, '_wpinv_custom_singular_name', true );
+        $custom_singular_name = get_post_meta($this->ID, '_wpinv_custom_singular_name', true);
 
-        return apply_filters( 'wpinv_get_item_custom_singular_name', $custom_singular_name, $this->ID );
+        return apply_filters('wpinv_get_item_custom_singular_name', $custom_singular_name, $this->ID);
     }
     
     public function get_editable() {
-        $editable = get_post_meta( $this->ID, '_wpinv_editable', true );
+        $editable = get_post_meta($this->ID, '_wpinv_editable', true);
 
-        return apply_filters( 'wpinv_item_get_editable', $editable, $this->ID );
+        return apply_filters('wpinv_item_get_editable', $editable, $this->ID);
     }
     
     public function get_excerpt() {
-        $excerpt = get_the_excerpt( $this->ID );
+        $excerpt = get_the_excerpt($this->ID);
         
-        return apply_filters( 'wpinv_item_get_excerpt', $excerpt, $this->ID );
+        return apply_filters('wpinv_item_get_excerpt', $excerpt, $this->ID);
     }
     
     public function get_is_recurring() {
-        $is_recurring = get_post_meta( $this->ID, '_wpinv_is_recurring', true );
+        $is_recurring = get_post_meta($this->ID, '_wpinv_is_recurring', true);
 
-        return apply_filters( 'wpinv_item_get_is_recurring', $is_recurring, $this->ID );
+        return apply_filters('wpinv_item_get_is_recurring', $is_recurring, $this->ID);
 
     }
     
-    public function get_recurring_period( $full = false ) {
-        $period = get_post_meta( $this->ID, '_wpinv_recurring_period', true );
+    public function get_recurring_period($full = false) {
+        $period = get_post_meta($this->ID, '_wpinv_recurring_period', true);
         
-        if ( !in_array( $period, array( 'D', 'W', 'M', 'Y' ) ) ) {
+        if (!in_array($period, array('D', 'W', 'M', 'Y'))) {
             $period = 'D';
         }
         
-        if ( $full ) {
-            switch( $period ) {
+        if ($full) {
+            switch ($period) {
                 case 'D':
                     $period = 'day';
                 break;
@@ -291,40 +291,40 @@ 
             }
         }
 
-        return apply_filters( 'wpinv_item_recurring_period', $period, $full, $this->ID );
+        return apply_filters('wpinv_item_recurring_period', $period, $full, $this->ID);
     }
     
     public function get_recurring_interval() {
-        $interval = (int)get_post_meta( $this->ID, '_wpinv_recurring_interval', true );
+        $interval = (int)get_post_meta($this->ID, '_wpinv_recurring_interval', true);
         
-        if ( !$interval > 0 ) {
+        if (!$interval > 0) {
             $interval = 1;
         }
 
-        return apply_filters( 'wpinv_item_recurring_interval', $interval, $this->ID );
+        return apply_filters('wpinv_item_recurring_interval', $interval, $this->ID);
     }
     
     public function get_recurring_limit() {
-        $limit = get_post_meta( $this->ID, '_wpinv_recurring_limit', true );
+        $limit = get_post_meta($this->ID, '_wpinv_recurring_limit', true);
 
-        return (int)apply_filters( 'wpinv_item_recurring_limit', $limit, $this->ID );
+        return (int)apply_filters('wpinv_item_recurring_limit', $limit, $this->ID);
     }
     
     public function get_free_trial() {
-        $free_trial = get_post_meta( $this->ID, '_wpinv_free_trial', true );
+        $free_trial = get_post_meta($this->ID, '_wpinv_free_trial', true);
 
-        return apply_filters( 'wpinv_item_get_free_trial', $free_trial, $this->ID );
+        return apply_filters('wpinv_item_get_free_trial', $free_trial, $this->ID);
     }
     
-    public function get_trial_period( $full = false ) {
-        $period = get_post_meta( $this->ID, '_wpinv_trial_period', true );
+    public function get_trial_period($full = false) {
+        $period = get_post_meta($this->ID, '_wpinv_trial_period', true);
         
-        if ( !in_array( $period, array( 'D', 'W', 'M', 'Y' ) ) ) {
+        if (!in_array($period, array('D', 'W', 'M', 'Y'))) {
             $period = 'D';
         }
         
-        if ( $full ) {
-            switch( $period ) {
+        if ($full) {
+            switch ($period) {
                 case 'D':
                     $period = 'day';
                 break;
@@ -340,47 +340,47 @@ 
             }
         }
 
-        return apply_filters( 'wpinv_item_trial_period', $period, $full, $this->ID );
+        return apply_filters('wpinv_item_trial_period', $period, $full, $this->ID);
     }
     
     public function get_trial_interval() {
-        $interval = absint( get_post_meta( $this->ID, '_wpinv_trial_interval', true ) );
+        $interval = absint(get_post_meta($this->ID, '_wpinv_trial_interval', true));
         
-        if ( !$interval > 0 ) {
+        if (!$interval > 0) {
             $interval = 1;
         }
 
-        return apply_filters( 'wpinv_item_trial_interval', $interval, $this->ID );
+        return apply_filters('wpinv_item_trial_interval', $interval, $this->ID);
     }
     
     public function get_the_price() {
-        $item_price = wpinv_price( wpinv_format_amount( $this->price ) );
+        $item_price = wpinv_price(wpinv_format_amount($this->price));
         
-        return apply_filters( 'wpinv_get_the_item_price', $item_price, $this->ID );
+        return apply_filters('wpinv_get_the_item_price', $item_price, $this->ID);
     }
     
     public function is_recurring() {
         $is_recurring = $this->get_is_recurring();
 
-        return (bool)apply_filters( 'wpinv_is_recurring_item', $is_recurring, $this->ID );
+        return (bool)apply_filters('wpinv_is_recurring_item', $is_recurring, $this->ID);
     }
     
     public function has_free_trial() {
         $free_trial = $this->is_recurring() && $this->get_free_trial() ? true : false;
 
-        return (bool)apply_filters( 'wpinv_item_has_free_trial', $free_trial, $this->ID );
+        return (bool)apply_filters('wpinv_item_has_free_trial', $free_trial, $this->ID);
     }
 
     public function is_free() {
         $is_free = false;
         
-        $price = get_post_meta( $this->ID, '_wpinv_price', true );
+        $price = get_post_meta($this->ID, '_wpinv_price', true);
 
-        if ( (float)$price == 0 ) {
+        if ((float)$price == 0) {
             $is_free = true;
         }
 
-        return (bool) apply_filters( 'wpinv_is_free_item', $is_free, $this->ID );
+        return (bool)apply_filters('wpinv_is_free_item', $is_free, $this->ID);
 
     }
     
@@ -389,15 +389,15 @@ 
 
         $is_editable = $editable === 0 || $editable === '0' ? false : true;
 
-        return (bool) apply_filters( 'wpinv_item_is_editable', $is_editable, $this->ID );
+        return (bool)apply_filters('wpinv_item_is_editable', $is_editable, $this->ID);
     }
     
-    public function save_metas( $metas = array() ) {
-        if ( empty( $metas ) ) {
+    public function save_metas($metas = array()) {
+        if (empty($metas)) {
             return false;
         }
         
-        foreach ( $metas as $meta_key => $meta_value ) {
+        foreach ($metas as $meta_key => $meta_value) {
             $meta_key = strpos($meta_key, '_wpinv_') !== 0 ? '_wpinv_' . $meta_key : $meta_key;
             
             $this->update_meta($meta_key, $meta_value);
@@ -406,66 +406,66 @@ 
         return true;
     }
 
-    public function update_meta( $meta_key = '', $meta_value = '', $prev_value = '' ) {
-        if ( empty( $meta_key ) ) {
+    public function update_meta($meta_key = '', $meta_value = '', $prev_value = '') {
+        if (empty($meta_key)) {
             return false;
         }
         
-        $meta_value = apply_filters( 'wpinv_update_item_meta_' . $meta_key, $meta_value, $this->ID );
+        $meta_value = apply_filters('wpinv_update_item_meta_' . $meta_key, $meta_value, $this->ID);
 
-        return update_post_meta( $this->ID, $meta_key, $meta_value, $prev_value );
+        return update_post_meta($this->ID, $meta_key, $meta_value, $prev_value);
     }
     
-    public function get_fees( $type = 'fee', $item_id = 0 ) {
+    public function get_fees($type = 'fee', $item_id = 0) {
         global $wpi_session;
         
-        $fees = $wpi_session->get( 'wpi_cart_fees' );
+        $fees = $wpi_session->get('wpi_cart_fees');
 
-        if ( ! wpinv_get_cart_contents() ) {
+        if (!wpinv_get_cart_contents()) {
             // We can only get item type fees when the cart is empty
             $type = 'custom';
         }
 
-        if ( ! empty( $fees ) && ! empty( $type ) && 'all' !== $type ) {
-            foreach( $fees as $key => $fee ) {
-                if( ! empty( $fee['type'] ) && $type != $fee['type'] ) {
-                    unset( $fees[ $key ] );
+        if (!empty($fees) && !empty($type) && 'all' !== $type) {
+            foreach ($fees as $key => $fee) {
+                if (!empty($fee['type']) && $type != $fee['type']) {
+                    unset($fees[$key]);
                 }
             }
         }
 
-        if ( ! empty( $fees ) && ! empty( $item_id ) ) {
+        if (!empty($fees) && !empty($item_id)) {
             // Remove fees that don't belong to the specified Item
-            foreach ( $fees as $key => $fee ) {
-                if ( (int) $item_id !== (int)$fee['custom_id'] ) {
-                    unset( $fees[ $key ] );
+            foreach ($fees as $key => $fee) {
+                if ((int)$item_id !== (int)$fee['custom_id']) {
+                    unset($fees[$key]);
                 }
             }
         }
 
-        if ( ! empty( $fees ) ) {
+        if (!empty($fees)) {
             // Remove fees that belong to a specific item but are not in the cart
-            foreach( $fees as $key => $fee ) {
-                if( empty( $fee['custom_id'] ) ) {
+            foreach ($fees as $key => $fee) {
+                if (empty($fee['custom_id'])) {
                     continue;
                 }
 
-                if ( !wpinv_item_in_cart( $fee['custom_id'] ) ) {
-                    unset( $fees[ $key ] );
+                if (!wpinv_item_in_cart($fee['custom_id'])) {
+                    unset($fees[$key]);
                 }
             }
         }
 
-        return ! empty( $fees ) ? $fees : array();
+        return !empty($fees) ? $fees : array();
     }
     
     public function can_purchase() {
         $can_purchase = true;
 
-        if ( !current_user_can( 'edit_post', $this->ID ) && $this->post_status != 'publish' ) {
+        if (!current_user_can('edit_post', $this->ID) && $this->post_status != 'publish') {
             $can_purchase = false;
         }
 
-        return (bool)apply_filters( 'wpinv_can_purchase_item', $can_purchase, $this );
+        return (bool)apply_filters('wpinv_can_purchase_item', $can_purchase, $this);
     }
 }

includes/class-wpinv.php

Spacing +154 added lines, -154 removed lines

@@ -7,15 +7,15 @@ 
  */
  
 // MUST have WordPress.
-if ( !defined( 'WPINC' ) ) {
-    exit( 'Do NOT access this file directly: ' . basename( __FILE__ ) );
+if (!defined('WPINC')) {
+    exit('Do NOT access this file directly: ' . basename(__FILE__));
 }
 
 class WPInv_Plugin {
     private static $instance;
     
     public static function run() {
-        if ( !isset( self::$instance ) && !( self::$instance instanceof WPInv_Plugin ) ) {
+        if (!isset(self::$instance) && !(self::$instance instanceof WPInv_Plugin)) {
             self::$instance = new WPInv_Plugin;
             self::$instance->includes();
             self::$instance->actions();
@@ -23,7 +23,7 @@ 
             self::$instance->reports    = new WPInv_Reports();
         }
         
-        do_action( 'wpinv_loaded' );
+        do_action('wpinv_loaded');
         
         return self::$instance;
     }
@@ -33,31 +33,31 @@ 
     }
     
     public function define_constants() {
-        define( 'WPINV_PLUGIN_DIR', plugin_dir_path( WPINV_PLUGIN_FILE ) );
-        define( 'WPINV_PLUGIN_URL', plugin_dir_url( WPINV_PLUGIN_FILE ) );
+        define('WPINV_PLUGIN_DIR', plugin_dir_path(WPINV_PLUGIN_FILE));
+        define('WPINV_PLUGIN_URL', plugin_dir_url(WPINV_PLUGIN_FILE));
     }
     
     private function actions() {
         /* Internationalize the text strings used. */
-        add_action( 'plugins_loaded', array( &$this, 'plugins_loaded' ) );
+        add_action('plugins_loaded', array(&$this, 'plugins_loaded'));
         
         /* Perform actions on admin initialization. */
-        add_action( 'admin_init', array( &$this, 'admin_init') );
-        add_action( 'init', array( &$this, 'init' ), 3 );
-        add_action( 'init', array( 'WPInv_Shortcodes', 'init' ) );
-        add_action( 'init', array( &$this, 'wpinv_actions' ) );
+        add_action('admin_init', array(&$this, 'admin_init'));
+        add_action('init', array(&$this, 'init'), 3);
+        add_action('init', array('WPInv_Shortcodes', 'init'));
+        add_action('init', array(&$this, 'wpinv_actions'));
         
-        if ( class_exists( 'BuddyPress' ) ) {
-            add_action( 'bp_include', array( &$this, 'bp_invoicing_init' ) );
+        if (class_exists('BuddyPress')) {
+            add_action('bp_include', array(&$this, 'bp_invoicing_init'));
         }
 
-        add_action( 'wp_enqueue_scripts', array( &$this, 'enqueue_scripts' ) );
+        add_action('wp_enqueue_scripts', array(&$this, 'enqueue_scripts'));
         
-        if ( is_admin() ) {
-            add_action( 'admin_enqueue_scripts', array( &$this, 'admin_enqueue_scripts' ) );
-            add_action( 'admin_body_class', array( &$this, 'admin_body_class' ) );
+        if (is_admin()) {
+            add_action('admin_enqueue_scripts', array(&$this, 'admin_enqueue_scripts'));
+            add_action('admin_body_class', array(&$this, 'admin_body_class'));
         } else {
-            add_filter( 'pre_get_posts', array( &$this, 'pre_get_posts' ) );
+            add_filter('pre_get_posts', array(&$this, 'pre_get_posts'));
         }
         
         /**
@@ -67,9 +67,9 @@ 
          *
          * @param WPInv_Plugin $this. Current WPInv_Plugin instance. Passed by reference.
          */
-        do_action_ref_array( 'wpinv_actions', array( &$this ) );
+        do_action_ref_array('wpinv_actions', array(&$this));
 
-        add_action( 'admin_init', array( &$this, 'activation_redirect') );
+        add_action('admin_init', array(&$this, 'activation_redirect'));
     }
     
     public function plugins_loaded() {
@@ -83,189 +83,189 @@ 
      * @since 1.0
      */
     public function load_textdomain() {
-        $locale = apply_filters( 'plugin_locale', get_locale(), 'invoicing' );
+        $locale = apply_filters('plugin_locale', get_locale(), 'invoicing');
         
-        load_textdomain( 'invoicing', WP_LANG_DIR . '/invoicing/invoicing-' . $locale . '.mo' );
-        load_plugin_textdomain( 'invoicing', false, WPINV_PLUGIN_DIR . 'languages' );
+        load_textdomain('invoicing', WP_LANG_DIR . '/invoicing/invoicing-' . $locale . '.mo');
+        load_plugin_textdomain('invoicing', false, WPINV_PLUGIN_DIR . 'languages');
         
         /**
          * Define language constants.
          */
-        require_once( WPINV_PLUGIN_DIR . 'language.php' );
+        require_once(WPINV_PLUGIN_DIR . 'language.php');
     }
         
     public function includes() {
         global $wpinv_options;
         
-        require_once( WPINV_PLUGIN_DIR . 'includes/admin/register-settings.php' );
+        require_once(WPINV_PLUGIN_DIR . 'includes/admin/register-settings.php');
         $wpinv_options = wpinv_get_settings();
         
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-post-types.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-email-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-general-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-helper-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-tax-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-template-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-address-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-invoice-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-item-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-discount-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-gateway-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-payment-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-user-functions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-error-functions.php' );
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-post-types.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-email-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-general-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-helper-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-tax-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-template-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-address-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-invoice-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-item-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-discount-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-gateway-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-payment-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-user-functions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-error-functions.php');
         //require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-db.php' );
         //require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscriptions-db.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-invoice.php' );
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-invoice.php');
         //require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscription.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-item.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-notes.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-session.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-ajax.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-api.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-reports.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-shortcodes.php' );
-        if ( !class_exists( 'WPInv_EUVat' ) ) {
-            require_once( WPINV_PLUGIN_DIR . 'includes/libraries/wpinv-euvat/class-wpinv-euvat.php' );
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-item.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-notes.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-session.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-ajax.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-api.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-reports.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-shortcodes.php');
+        if (!class_exists('WPInv_EUVat')) {
+            require_once(WPINV_PLUGIN_DIR . 'includes/libraries/wpinv-euvat/class-wpinv-euvat.php');
         }
         
-        $gateways = array_keys( wpinv_get_enabled_payment_gateways() );
-        if ( !empty( $gateways ) ) {
-            foreach ( $gateways as $gateway ) {
-                if ( $gateway == 'manual' ) {
+        $gateways = array_keys(wpinv_get_enabled_payment_gateways());
+        if (!empty($gateways)) {
+            foreach ($gateways as $gateway) {
+                if ($gateway == 'manual') {
                     continue;
                 }
                 
                 $gateway_file = WPINV_PLUGIN_DIR . 'includes/gateways/' . $gateway . '.php';
                 
-                if ( file_exists( $gateway_file ) ) {
-                    require_once( $gateway_file );
+                if (file_exists($gateway_file)) {
+                    require_once($gateway_file);
                 }
             }
         }
-        require_once( WPINV_PLUGIN_DIR . 'includes/gateways/manual.php' );
+        require_once(WPINV_PLUGIN_DIR . 'includes/gateways/manual.php');
         
-        if ( is_admin() || ( defined( 'WP_CLI' ) && WP_CLI ) ) {
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/wpinv-upgrade-functions.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/wpinv-admin-functions.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/admin-meta-boxes.php' );
+        if (is_admin() || (defined('WP_CLI') && WP_CLI)) {
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/wpinv-upgrade-functions.php');
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/wpinv-admin-functions.php');
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/admin-meta-boxes.php');
             //require_once( WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-recurring-admin.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-details.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-items.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-notes.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-address.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/admin-pages.php' );
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-details.php');
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-items.php');
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-notes.php');
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/meta-boxes/class-mb-invoice-address.php');
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/admin-pages.php');
             //require_once( WPINV_PLUGIN_DIR . 'includes/admin/subscriptions.php' );
         }
         
         // include css inliner
-        if ( ! class_exists( 'Emogrifier' ) && class_exists( 'DOMDocument' ) ) {
-            include_once( WPINV_PLUGIN_DIR . 'includes/libraries/class-emogrifier.php' );
+        if (!class_exists('Emogrifier') && class_exists('DOMDocument')) {
+            include_once(WPINV_PLUGIN_DIR . 'includes/libraries/class-emogrifier.php');
         }
         
-        require_once( WPINV_PLUGIN_DIR . 'includes/admin/install.php' );
+        require_once(WPINV_PLUGIN_DIR . 'includes/admin/install.php');
     }
     
     public function init() {
     }
     
     public function admin_init() {
-        if (!(defined( 'DOING_AJAX' ) && DOING_AJAX)) {
+        if (!(defined('DOING_AJAX') && DOING_AJAX)) {
         }
         
-        add_action( 'admin_print_scripts-edit.php', array( &$this, 'admin_print_scripts_edit_php' ) );
+        add_action('admin_print_scripts-edit.php', array(&$this, 'admin_print_scripts_edit_php'));
     }
 
     public function activation_redirect() {
         // Bail if no activation redirect
-        if ( !get_transient( '_wpinv_activation_redirect' ) ) {
+        if (!get_transient('_wpinv_activation_redirect')) {
             return;
         }
 
         // Delete the redirect transient
-        delete_transient( '_wpinv_activation_redirect' );
+        delete_transient('_wpinv_activation_redirect');
 
         // Bail if activating from network, or bulk
-        if ( is_network_admin() || isset( $_GET['activate-multi'] ) ) {
+        if (is_network_admin() || isset($_GET['activate-multi'])) {
             return;
         }
 
-        wp_safe_redirect( admin_url( 'admin.php?page=wpinv-settings&tab=general' ) );
+        wp_safe_redirect(admin_url('admin.php?page=wpinv-settings&tab=general'));
         exit;
     }
     
     public function enqueue_scripts() {
-        $suffix       = '';//defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+        $suffix = ''; //defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
         
-        wp_deregister_style( 'font-awesome' );
-        wp_register_style( 'font-awesome', '//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome' . $suffix . '.css', array(), '4.7.0' );
-        wp_enqueue_style( 'font-awesome' );
+        wp_deregister_style('font-awesome');
+        wp_register_style('font-awesome', '//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome' . $suffix . '.css', array(), '4.7.0');
+        wp_enqueue_style('font-awesome');
         
-        wp_register_style( 'wpinv_front_style', WPINV_PLUGIN_URL . 'assets/css/invoice-front.css', array(), WPINV_VERSION );
-        wp_enqueue_style( 'wpinv_front_style' );
+        wp_register_style('wpinv_front_style', WPINV_PLUGIN_URL . 'assets/css/invoice-front.css', array(), WPINV_VERSION);
+        wp_enqueue_style('wpinv_front_style');
                
         // Register scripts
-        wp_register_script( 'jquery-blockui', WPINV_PLUGIN_URL . 'assets/js/jquery.blockUI.min.js', array( 'jquery' ), '2.70', true );
-        wp_register_script( 'wpinv-front-script', WPINV_PLUGIN_URL . 'assets/js/invoice-front' . $suffix . '.js', array( 'jquery', 'wpinv-vat-script' ),  WPINV_VERSION );
+        wp_register_script('jquery-blockui', WPINV_PLUGIN_URL . 'assets/js/jquery.blockUI.min.js', array('jquery'), '2.70', true);
+        wp_register_script('wpinv-front-script', WPINV_PLUGIN_URL . 'assets/js/invoice-front' . $suffix . '.js', array('jquery', 'wpinv-vat-script'), WPINV_VERSION);
         
         $localize                         = array();
-        $localize['ajax_url']             = admin_url( 'admin-ajax.php' );
-        $localize['nonce']                = wp_create_nonce( 'wpinv-nonce' );
+        $localize['ajax_url']             = admin_url('admin-ajax.php');
+        $localize['nonce']                = wp_create_nonce('wpinv-nonce');
         $localize['currency_symbol']      = wpinv_currency_symbol();
         $localize['currency_pos']         = wpinv_currency_position();
         $localize['thousand_sep']         = wpinv_thousands_separator();
         $localize['decimal_sep']          = wpinv_decimal_separator();
         $localize['decimals']             = wpinv_decimals();
         
-        $localize = apply_filters( 'wpinv_front_js_localize', $localize );
+        $localize = apply_filters('wpinv_front_js_localize', $localize);
         
-        wp_enqueue_script( 'jquery-blockui' );
+        wp_enqueue_script('jquery-blockui');
         $autofill_api = wpinv_get_option('address_autofill_api');
         $autofill_active = wpinv_get_option('address_autofill_active');
-        if ( isset( $autofill_active ) && 1 == $autofill_active && !empty( $autofill_api ) && wpinv_is_checkout() ) {
-            if ( wp_script_is( 'google-maps-api', 'enqueued' ) ) {
-                wp_dequeue_script( 'google-maps-api' );
+        if (isset($autofill_active) && 1 == $autofill_active && !empty($autofill_api) && wpinv_is_checkout()) {
+            if (wp_script_is('google-maps-api', 'enqueued')) {
+                wp_dequeue_script('google-maps-api');
             }
-            wp_enqueue_script( 'google-maps-api', 'https://maps.googleapis.com/maps/api/js?key=' . $autofill_api . '&libraries=places', array( 'jquery' ), '', false );
-            wp_enqueue_script( 'google-maps-init', WPINV_PLUGIN_URL . 'assets/js/gaaf.js', array( 'jquery', 'google-maps-api' ), '', true );
+            wp_enqueue_script('google-maps-api', 'https://maps.googleapis.com/maps/api/js?key=' . $autofill_api . '&libraries=places', array('jquery'), '', false);
+            wp_enqueue_script('google-maps-init', WPINV_PLUGIN_URL . 'assets/js/gaaf.js', array('jquery', 'google-maps-api'), '', true);
         }
-        wp_enqueue_script( 'wpinv-front-script' );
-        wp_localize_script( 'wpinv-front-script', 'WPInv', $localize );
+        wp_enqueue_script('wpinv-front-script');
+        wp_localize_script('wpinv-front-script', 'WPInv', $localize);
     }
 
     public function admin_enqueue_scripts() {
         global $post, $pagenow;
         
         $post_type  = wpinv_admin_post_type();
-        $suffix     = '';//defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+        $suffix     = ''; //defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
         
-        wp_deregister_style( 'font-awesome' );
-        wp_register_style( 'font-awesome', '//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome' . $suffix . '.css', array(), '4.7.0' );
-        wp_enqueue_style( 'font-awesome' );
+        wp_deregister_style('font-awesome');
+        wp_register_style('font-awesome', '//maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome' . $suffix . '.css', array(), '4.7.0');
+        wp_enqueue_style('font-awesome');
         
-        wp_register_style( 'jquery-ui-css', WPINV_PLUGIN_URL . 'assets/css/jquery-ui' . $suffix . '.css', array(), '1.8.16' );
-        wp_enqueue_style( 'jquery-ui-css' );
+        wp_register_style('jquery-ui-css', WPINV_PLUGIN_URL . 'assets/css/jquery-ui' . $suffix . '.css', array(), '1.8.16');
+        wp_enqueue_style('jquery-ui-css');
         
-        wp_register_style( 'jquery-chosen', WPINV_PLUGIN_URL . 'assets/css/chosen' . $suffix . '.css', array(), '1.6.2' );
-        wp_enqueue_style( 'jquery-chosen' );
+        wp_register_style('jquery-chosen', WPINV_PLUGIN_URL . 'assets/css/chosen' . $suffix . '.css', array(), '1.6.2');
+        wp_enqueue_style('jquery-chosen');
 
-        wp_register_script( 'jquery-chosen', WPINV_PLUGIN_URL . 'assets/js/chosen.jquery' . $suffix . '.js', array( 'jquery' ), '1.6.2' );
-        wp_enqueue_script( 'jquery-chosen' );
+        wp_register_script('jquery-chosen', WPINV_PLUGIN_URL . 'assets/js/chosen.jquery' . $suffix . '.js', array('jquery'), '1.6.2');
+        wp_enqueue_script('jquery-chosen');
         
-        wp_register_style( 'wpinv_meta_box_style', WPINV_PLUGIN_URL . 'assets/css/meta-box.css', array(), WPINV_VERSION );
-        wp_enqueue_style( 'wpinv_meta_box_style' );
+        wp_register_style('wpinv_meta_box_style', WPINV_PLUGIN_URL . 'assets/css/meta-box.css', array(), WPINV_VERSION);
+        wp_enqueue_style('wpinv_meta_box_style');
         
-        wp_register_style( 'wpinv_admin_style', WPINV_PLUGIN_URL . 'assets/css/admin.css', array(), WPINV_VERSION );
-        wp_enqueue_style( 'wpinv_admin_style' );
+        wp_register_style('wpinv_admin_style', WPINV_PLUGIN_URL . 'assets/css/admin.css', array(), WPINV_VERSION);
+        wp_enqueue_style('wpinv_admin_style');
         
-        if ( $post_type == 'wpi_discount' || $post_type == 'wpi_invoice' && ( $pagenow == 'post-new.php' || $pagenow == 'post.php' ) ) {
-            wp_enqueue_script( 'jquery-ui-datepicker' );
+        if ($post_type == 'wpi_discount' || $post_type == 'wpi_invoice' && ($pagenow == 'post-new.php' || $pagenow == 'post.php')) {
+            wp_enqueue_script('jquery-ui-datepicker');
         }
 
-        wp_enqueue_style( 'wp-color-picker' );
-        wp_enqueue_script( 'wp-color-picker' );
+        wp_enqueue_style('wp-color-picker');
+        wp_enqueue_script('wp-color-picker');
         
-        wp_register_script( 'jquery-blockui', WPINV_PLUGIN_URL . 'assets/js/jquery.blockUI.min.js', array( 'jquery' ), '2.70', true );
+        wp_register_script('jquery-blockui', WPINV_PLUGIN_URL . 'assets/js/jquery.blockUI.min.js', array('jquery'), '2.70', true);
 
         if ($post_type == 'wpi_invoice' || $post_type == 'wpi_quote' && ($pagenow == 'post-new.php' || $pagenow == 'post.php')) {
             $autofill_api = wpinv_get_option('address_autofill_api');
@@ -276,17 +276,17 @@ 
             }
         }
 
-        wp_register_script( 'wpinv-admin-script', WPINV_PLUGIN_URL . 'assets/js/admin' . $suffix . '.js', array( 'jquery', 'jquery-blockui','jquery-ui-tooltip' ),  WPINV_VERSION );
-        wp_enqueue_script( 'wpinv-admin-script' );
+        wp_register_script('wpinv-admin-script', WPINV_PLUGIN_URL . 'assets/js/admin' . $suffix . '.js', array('jquery', 'jquery-blockui', 'jquery-ui-tooltip'), WPINV_VERSION);
+        wp_enqueue_script('wpinv-admin-script');
         
         $localize                               = array();
-        $localize['ajax_url']                   = admin_url( 'admin-ajax.php' );
-        $localize['post_ID']                    = isset( $post->ID ) ? $post->ID : '';
-        $localize['wpinv_nonce']                = wp_create_nonce( 'wpinv-nonce' );
-        $localize['add_invoice_note_nonce']     = wp_create_nonce( 'add-invoice-note' );
-        $localize['delete_invoice_note_nonce']  = wp_create_nonce( 'delete-invoice-note' );
-        $localize['invoice_item_nonce']         = wp_create_nonce( 'invoice-item' );
-        $localize['billing_details_nonce']      = wp_create_nonce( 'get-billing-details' );
+        $localize['ajax_url']                   = admin_url('admin-ajax.php');
+        $localize['post_ID']                    = isset($post->ID) ? $post->ID : '';
+        $localize['wpinv_nonce']                = wp_create_nonce('wpinv-nonce');
+        $localize['add_invoice_note_nonce']     = wp_create_nonce('add-invoice-note');
+        $localize['delete_invoice_note_nonce']  = wp_create_nonce('delete-invoice-note');
+        $localize['invoice_item_nonce']         = wp_create_nonce('invoice-item');
+        $localize['billing_details_nonce']      = wp_create_nonce('get-billing-details');
         $localize['tax']                        = wpinv_tax_amount();
         $localize['discount']                   = wpinv_discount_amount();
         $localize['currency_symbol']            = wpinv_currency_symbol();
@@ -294,60 +294,60 @@ 
         $localize['thousand_sep']               = wpinv_thousands_separator();
         $localize['decimal_sep']                = wpinv_decimal_separator();
         $localize['decimals']                   = wpinv_decimals();
-        $localize['save_invoice']               = __( 'Save Invoice', 'invoicing' );
-        $localize['status_publish']             = wpinv_status_nicename( 'publish' );
-        $localize['status_pending']             = wpinv_status_nicename( 'wpi-pending' );
-        $localize['delete_tax_rate']            = __( 'Are you sure you wish to delete this tax rate?', 'invoicing' );
-        $localize['OneItemMin']                 = __( 'Invoice must contain at least one item', 'invoicing' );
-        $localize['DeleteInvoiceItem']          = __( 'Are you sure you wish to delete this item?', 'invoicing' );
-        $localize['FillBillingDetails']         = __( 'Fill the user\'s billing information? This will remove any currently entered billing information', 'invoicing' );
-        $localize['confirmCalcTotals']          = __( 'Recalculate totals? This will recalculate totals based on the user billing country. If no billing country is set it will use the base country.', 'invoicing' );
-        $localize['AreYouSure']                 = __( 'Are you sure?', 'invoicing' );
-        $localize['errDeleteItem']              = __( 'This item is in use! Before delete this item, you need to delete all the invoice(s) using this item.', 'invoicing' );
+        $localize['save_invoice']               = __('Save Invoice', 'invoicing');
+        $localize['status_publish']             = wpinv_status_nicename('publish');
+        $localize['status_pending']             = wpinv_status_nicename('wpi-pending');
+        $localize['delete_tax_rate']            = __('Are you sure you wish to delete this tax rate?', 'invoicing');
+        $localize['OneItemMin']                 = __('Invoice must contain at least one item', 'invoicing');
+        $localize['DeleteInvoiceItem']          = __('Are you sure you wish to delete this item?', 'invoicing');
+        $localize['FillBillingDetails']         = __('Fill the user\'s billing information? This will remove any currently entered billing information', 'invoicing');
+        $localize['confirmCalcTotals']          = __('Recalculate totals? This will recalculate totals based on the user billing country. If no billing country is set it will use the base country.', 'invoicing');
+        $localize['AreYouSure']                 = __('Are you sure?', 'invoicing');
+        $localize['errDeleteItem']              = __('This item is in use! Before delete this item, you need to delete all the invoice(s) using this item.', 'invoicing');
 
-        $localize = apply_filters( 'wpinv_admin_js_localize', $localize );
+        $localize = apply_filters('wpinv_admin_js_localize', $localize);
 
-        wp_localize_script( 'wpinv-admin-script', 'WPInv_Admin', $localize );
+        wp_localize_script('wpinv-admin-script', 'WPInv_Admin', $localize);
     }
     
-    public function admin_body_class( $classes ) {
+    public function admin_body_class($classes) {
         global $pagenow, $post, $current_screen;
         
-        if ( !empty( $current_screen->post_type ) && ( $current_screen->post_type == 'wpi_invoice' || $current_screen->post_type == 'wpi_quote' ) ) {
+        if (!empty($current_screen->post_type) && ($current_screen->post_type == 'wpi_invoice' || $current_screen->post_type == 'wpi_quote')) {
             $classes .= ' wpinv-cpt';
         }
         
-        $page = isset( $_GET['page'] ) ? strtolower( $_GET['page'] ) : false;
+        $page = isset($_GET['page']) ? strtolower($_GET['page']) : false;
 
         $add_class = false;
-        if ( $pagenow == 'admin.php' && $page ) {
-            $add_class = strpos( $page, 'wpinv-' );
+        if ($pagenow == 'admin.php' && $page) {
+            $add_class = strpos($page, 'wpinv-');
         }
         
         $settings_class = array();
-        if ( $page == 'wpinv-settings' ) {
-            if ( !empty( $_REQUEST['tab'] ) ) {
-                $settings_class[] = sanitize_text_field( $_REQUEST['tab'] );
+        if ($page == 'wpinv-settings') {
+            if (!empty($_REQUEST['tab'])) {
+                $settings_class[] = sanitize_text_field($_REQUEST['tab']);
             }
             
-            if ( !empty( $_REQUEST['section'] ) ) {
-                $settings_class[] = sanitize_text_field( $_REQUEST['section'] );
+            if (!empty($_REQUEST['section'])) {
+                $settings_class[] = sanitize_text_field($_REQUEST['section']);
             }
             
-            $settings_class[] = isset( $_REQUEST['wpi_sub'] ) && $_REQUEST['wpi_sub'] !== '' ? sanitize_text_field( $_REQUEST['wpi_sub'] ) : 'main';
+            $settings_class[] = isset($_REQUEST['wpi_sub']) && $_REQUEST['wpi_sub'] !== '' ? sanitize_text_field($_REQUEST['wpi_sub']) : 'main';
         }
         
-        if ( !empty( $settings_class ) ) {
-            $classes .= ' wpi-' . wpinv_sanitize_key( implode( $settings_class, '-' ) );
+        if (!empty($settings_class)) {
+            $classes .= ' wpi-' . wpinv_sanitize_key(implode($settings_class, '-'));
         }
         
         $post_type = wpinv_admin_post_type();
 
-        if ( $post_type == 'wpi_invoice' || $post_type == 'wpi_quote' || $add_class !== false ) {
+        if ($post_type == 'wpi_invoice' || $post_type == 'wpi_quote' || $add_class !== false) {
             return $classes .= ' wpinv';
         }
         
-        if ( $pagenow == 'post.php' && $post_type == 'wpi_item' && !empty( $post ) && !wpinv_item_is_editable( $post ) ) {
+        if ($pagenow == 'post.php' && $post_type == 'wpi_item' && !empty($post) && !wpinv_item_is_editable($post)) {
             $classes .= ' wpi-editable-n';
         }
 
@@ -359,20 +359,20 @@ 
     }
     
     public function wpinv_actions() {
-        if ( isset( $_REQUEST['wpi_action'] ) ) {
-            do_action( 'wpinv_' . wpinv_sanitize_key( $_REQUEST['wpi_action'] ), $_REQUEST );
+        if (isset($_REQUEST['wpi_action'])) {
+            do_action('wpinv_' . wpinv_sanitize_key($_REQUEST['wpi_action']), $_REQUEST);
         }
     }
     
-    public function pre_get_posts( $wp_query ) {
-        if ( !empty( $wp_query->query_vars['post_type'] ) && $wp_query->query_vars['post_type'] == 'wpi_invoice' && is_user_logged_in() && is_single() && $wp_query->is_main_query() ) {
-            $wp_query->query_vars['post_status'] = array_keys( wpinv_get_invoice_statuses() );
+    public function pre_get_posts($wp_query) {
+        if (!empty($wp_query->query_vars['post_type']) && $wp_query->query_vars['post_type'] == 'wpi_invoice' && is_user_logged_in() && is_single() && $wp_query->is_main_query()) {
+            $wp_query->query_vars['post_status'] = array_keys(wpinv_get_invoice_statuses());
         }
         
         return $wp_query;
     }
     
     public function bp_invoicing_init() {
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-bp-core.php' );
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-bp-core.php');
     }
 }
\ No newline at end of file

includes/class-wpinv-invoice.php

Spacing +799 added lines, -799 removed lines

@@ -7,12 +7,12 @@ 
  */
  
 // MUST have WordPress.
-if ( !defined( 'WPINC' ) ) {
-    exit( 'Do NOT access this file directly: ' . basename( __FILE__ ) );
+if (!defined('WPINC')) {
+    exit('Do NOT access this file directly: ' . basename(__FILE__));
 }
 
 final class WPInv_Invoice {
-    public $ID  = 0;
+    public $ID = 0;
     public $title;
     public $post_type;
     
@@ -65,17 +65,17 @@ 
     public $full_name = '';
     public $parent_invoice = 0;
     
-    public function __construct( $invoice_id = false ) {
-        if( empty( $invoice_id ) ) {
+    public function __construct($invoice_id = false) {
+        if (empty($invoice_id)) {
             return false;
         }
 
-        $this->setup_invoice( $invoice_id );
+        $this->setup_invoice($invoice_id);
     }
 
-    public function get( $key ) {
-        if ( method_exists( $this, 'get_' . $key ) ) {
-            $value = call_user_func( array( $this, 'get_' . $key ) );
+    public function get($key) {
+        if (method_exists($this, 'get_' . $key)) {
+            $value = call_user_func(array($this, 'get_' . $key));
         } else {
             $value = $this->$key;
         }
@@ -83,51 +83,51 @@ 
         return $value;
     }
 
-    public function set( $key, $value ) {
-        $ignore = array( 'items', 'cart_details', 'fees', '_ID' );
+    public function set($key, $value) {
+        $ignore = array('items', 'cart_details', 'fees', '_ID');
 
-        if ( $key === 'status' ) {
+        if ($key === 'status') {
             $this->old_status = $this->status;
         }
 
-        if ( ! in_array( $key, $ignore ) ) {
-            $this->pending[ $key ] = $value;
+        if (!in_array($key, $ignore)) {
+            $this->pending[$key] = $value;
         }
 
-        if( '_ID' !== $key ) {
+        if ('_ID' !== $key) {
             $this->$key = $value;
         }
     }
 
-    public function _isset( $name ) {
-        if ( property_exists( $this, $name) ) {
-            return false === empty( $this->$name );
+    public function _isset($name) {
+        if (property_exists($this, $name)) {
+            return false === empty($this->$name);
         } else {
             return null;
         }
     }
 
-    private function setup_invoice( $invoice_id ) {
+    private function setup_invoice($invoice_id) {
         $this->pending = array();
 
-        if ( empty( $invoice_id ) ) {
+        if (empty($invoice_id)) {
             return false;
         }
 
-        $invoice = get_post( $invoice_id );
+        $invoice = get_post($invoice_id);
 
-        if( !$invoice || is_wp_error( $invoice ) ) {
+        if (!$invoice || is_wp_error($invoice)) {
             return false;
         }
 
-        if( !('wpi_invoice' == $invoice->post_type OR 'wpi_quote' == $invoice->post_type) ) {
+        if (!('wpi_invoice' == $invoice->post_type OR 'wpi_quote' == $invoice->post_type)) {
             return false;
         }
 
-        do_action( 'wpinv_pre_setup_invoice', $this, $invoice_id );
+        do_action('wpinv_pre_setup_invoice', $this, $invoice_id);
         
         // Primary Identifier
-        $this->ID              = absint( $invoice_id );
+        $this->ID              = absint($invoice_id);
         $this->post_type       = $invoice->post_type;
         
         // We have a payment, get the generic payment_meta item to reduce calls to it
@@ -139,7 +139,7 @@ 
         $this->post_status     = $this->status;
         $this->mode            = $this->setup_mode();
         $this->parent_invoice  = $invoice->post_parent;
-        $this->post_name       = $this->setup_post_name( $invoice );
+        $this->post_name       = $this->setup_post_name($invoice);
         $this->status_nicename = $this->setup_status_nicename($invoice->post_status);
 
         // Items
@@ -161,8 +161,8 @@ 
         
         // User based
         $this->ip              = $this->setup_ip();
-        $this->user_id         = !empty( $invoice->post_author ) ? $invoice->post_author : get_current_user_id();///$this->setup_user_id();
-        $this->email           = get_the_author_meta( 'email', $this->user_id );
+        $this->user_id         = !empty($invoice->post_author) ? $invoice->post_author : get_current_user_id(); ///$this->setup_user_id();
+        $this->email           = get_the_author_meta('email', $this->user_id);
         
         $this->user_info       = $this->setup_user_info();
                 
@@ -171,7 +171,7 @@ 
         $this->company         = $this->user_info['company'];
         $this->vat_number      = $this->user_info['vat_number'];
         $this->vat_rate        = $this->user_info['vat_rate'];
-        $this->adddress_confirmed  = $this->user_info['adddress_confirmed'];
+        $this->adddress_confirmed = $this->user_info['adddress_confirmed'];
         $this->address         = $this->user_info['address'];
         $this->city            = $this->user_info['city'];
         $this->country         = $this->user_info['country'];
@@ -186,35 +186,35 @@ 
         // Other Identifiers
         $this->key             = $this->setup_invoice_key();
         $this->number          = $this->setup_invoice_number();
-        $this->title           = !empty( $invoice->post_title ) ? $invoice->post_title : $this->number;
+        $this->title           = !empty($invoice->post_title) ? $invoice->post_title : $this->number;
         
-        $this->full_name       = trim( $this->first_name . ' '. $this->last_name );
+        $this->full_name       = trim($this->first_name . ' ' . $this->last_name);
         
         // Allow extensions to add items to this object via hook
-        do_action( 'wpinv_setup_invoice', $this, $invoice_id );
+        do_action('wpinv_setup_invoice', $this, $invoice_id);
 
         return true;
     }
     
     private function setup_status_nicename($status) {
-        $all_invoice_statuses  = wpinv_get_invoice_statuses();
-        $status   = isset( $all_invoice_statuses[$status] ) ? $all_invoice_statuses[$status] : __( $status, 'invoicing' );
+        $all_invoice_statuses = wpinv_get_invoice_statuses();
+        $status = isset($all_invoice_statuses[$status]) ? $all_invoice_statuses[$status] : __($status, 'invoicing');
 
-        return apply_filters( 'setup_status_nicename', $status );
+        return apply_filters('setup_status_nicename', $status);
     }
     
-    private function setup_post_name( $post = NULL ) {
+    private function setup_post_name($post = NULL) {
         global $wpdb;
         
         $post_name = '';
         
-        if ( !empty( $post ) ) {
-            if( !empty( $post->post_name ) ) {
+        if (!empty($post)) {
+            if (!empty($post->post_name)) {
                 $post_name = $post->post_name;
-            } else if ( !empty( $post->ID ) ) {
-                $post_name = wpinv_generate_post_name( $post->ID );
+            } else if (!empty($post->ID)) {
+                $post_name = wpinv_generate_post_name($post->ID);
 
-                $wpdb->update( $wpdb->posts, array( 'post_name' => $post_name ), array( 'ID' => $post->ID ) );
+                $wpdb->update($wpdb->posts, array('post_name' => $post_name), array('ID' => $post->ID));
             }
         }
 
@@ -222,12 +222,12 @@ 
     }
     
     private function setup_due_date() {
-        $due_date = $this->get_meta( '_wpinv_due_date' );
+        $due_date = $this->get_meta('_wpinv_due_date');
         
-        if ( empty( $due_date ) ) {
-            $overdue_time = strtotime( $this->date ) + ( DAY_IN_SECONDS * absint( wpinv_get_option( 'overdue_days' ) ) );
-            $due_date = date_i18n( 'Y-m-d', $overdue_time );
-        } else if ( $due_date == 'none' ) {
+        if (empty($due_date)) {
+            $overdue_time = strtotime($this->date) + (DAY_IN_SECONDS * absint(wpinv_get_option('overdue_days')));
+            $due_date = date_i18n('Y-m-d', $overdue_time);
+        } else if ($due_date == 'none') {
             $due_date = '';
         }
         
@@ -235,63 +235,63 @@ 
     }
     
     private function setup_completed_date() {
-        $invoice = get_post( $this->ID );
+        $invoice = get_post($this->ID);
 
-        if ( 'wpi-pending' == $invoice->post_status || 'preapproved' == $invoice->post_status ) {
+        if ('wpi-pending' == $invoice->post_status || 'preapproved' == $invoice->post_status) {
             return false; // This invoice was never paid
         }
 
-        $date = ( $date = $this->get_meta( '_wpinv_completed_date', true ) ) ? $date : $invoice->modified_date;
+        $date = ($date = $this->get_meta('_wpinv_completed_date', true)) ? $date : $invoice->modified_date;
 
         return $date;
     }
     
     private function setup_cart_details() {
-        $cart_details = isset( $this->payment_meta['cart_details'] ) ? maybe_unserialize( $this->payment_meta['cart_details'] ) : array();
+        $cart_details = isset($this->payment_meta['cart_details']) ? maybe_unserialize($this->payment_meta['cart_details']) : array();
         return $cart_details;
     }
     
     public function array_convert() {
-        return get_object_vars( $this );
+        return get_object_vars($this);
     }
     
     private function setup_items() {
-        $items = isset( $this->payment_meta['items'] ) ? maybe_unserialize( $this->payment_meta['items'] ) : array();
+        $items = isset($this->payment_meta['items']) ? maybe_unserialize($this->payment_meta['items']) : array();
         return $items;
     }
     
     private function setup_fees() {
-        $payment_fees = isset( $this->payment_meta['fees'] ) ? $this->payment_meta['fees'] : array();
+        $payment_fees = isset($this->payment_meta['fees']) ? $this->payment_meta['fees'] : array();
         return $payment_fees;
     }
         
     private function setup_currency() {
-        $currency = isset( $this->payment_meta['currency'] ) ? $this->payment_meta['currency'] : apply_filters( 'wpinv_currency_default', wpinv_get_currency(), $this );
+        $currency = isset($this->payment_meta['currency']) ? $this->payment_meta['currency'] : apply_filters('wpinv_currency_default', wpinv_get_currency(), $this);
         return $currency;
     }
     
     private function setup_discount() {
         //$discount = $this->get_meta( '_wpinv_discount', true );
-        $discount = (float)$this->subtotal - ( (float)$this->total - (float)$this->tax - (float)$this->fees_total );
-        if ( $discount < 0 ) {
+        $discount = (float)$this->subtotal - ((float)$this->total - (float)$this->tax - (float)$this->fees_total);
+        if ($discount < 0) {
             $discount = 0;
         }
-        $discount = wpinv_round_amount( $discount );
+        $discount = wpinv_round_amount($discount);
         
         return $discount;
     }
     
     private function setup_discount_code() {
-        $discount_code = !empty( $this->discounts ) ? $this->discounts : $this->get_meta( '_wpinv_discount_code', true );
+        $discount_code = !empty($this->discounts) ? $this->discounts : $this->get_meta('_wpinv_discount_code', true);
         return $discount_code;
     }
     
     private function setup_tax() {
-        $tax = $this->get_meta( '_wpinv_tax', true );
+        $tax = $this->get_meta('_wpinv_tax', true);
 
         // We don't have tax as it's own meta and no meta was passed
-        if ( '' === $tax ) {            
-            $tax = isset( $this->payment_meta['tax'] ) ? $this->payment_meta['tax'] : 0;
+        if ('' === $tax) {            
+            $tax = isset($this->payment_meta['tax']) ? $this->payment_meta['tax'] : 0;
         }
 
         return $tax;
@@ -301,9 +301,9 @@ 
         $subtotal     = 0;
         $cart_details = $this->cart_details;
 
-        if ( is_array( $cart_details ) ) {
-            foreach ( $cart_details as $item ) {
-                if ( isset( $item['subtotal'] ) ) {
+        if (is_array($cart_details)) {
+            foreach ($cart_details as $item) {
+                if (isset($item['subtotal'])) {
                     $subtotal += $item['subtotal'];
                 }
             }
@@ -317,23 +317,23 @@ 
     }
     
     private function setup_discounts() {
-        $discounts = ! empty( $this->payment_meta['user_info']['discount'] ) ? $this->payment_meta['user_info']['discount'] : array();
+        $discounts = !empty($this->payment_meta['user_info']['discount']) ? $this->payment_meta['user_info']['discount'] : array();
         return $discounts;
     }
     
     private function setup_total() {
-        $amount = $this->get_meta( '_wpinv_total', true );
+        $amount = $this->get_meta('_wpinv_total', true);
 
-        if ( empty( $amount ) && '0.00' != $amount ) {
-            $meta   = $this->get_meta( '_wpinv_payment_meta', true );
-            $meta   = maybe_unserialize( $meta );
+        if (empty($amount) && '0.00' != $amount) {
+            $meta   = $this->get_meta('_wpinv_payment_meta', true);
+            $meta   = maybe_unserialize($meta);
 
-            if ( isset( $meta['amount'] ) ) {
+            if (isset($meta['amount'])) {
                 $amount = $meta['amount'];
             }
         }
 
-        if($amount < 0){
+        if ($amount < 0) {
             $amount = 0;
         }
 
@@ -341,13 +341,13 @@ 
     }
     
     private function setup_mode() {
-        return $this->get_meta( '_wpinv_mode' );
+        return $this->get_meta('_wpinv_mode');
     }
 
     private function setup_gateway() {
-        $gateway = $this->get_meta( '_wpinv_gateway' );
+        $gateway = $this->get_meta('_wpinv_gateway');
         
-        if ( empty( $gateway ) && 'publish' === $this->status ) {
+        if (empty($gateway) && 'publish' === $this->status) {
             $gateway = 'manual';
         }
         
@@ -355,23 +355,23 @@ 
     }
     
     private function setup_gateway_title() {
-        $gateway_title = wpinv_get_gateway_checkout_label( $this->gateway );
+        $gateway_title = wpinv_get_gateway_checkout_label($this->gateway);
         return $gateway_title;
     }
 
     private function setup_transaction_id() {
-        $transaction_id = $this->get_meta( '_wpinv_transaction_id' );
+        $transaction_id = $this->get_meta('_wpinv_transaction_id');
 
-        if ( empty( $transaction_id ) || (int) $transaction_id === (int) $this->ID ) {
+        if (empty($transaction_id) || (int)$transaction_id === (int)$this->ID) {
             $gateway        = $this->gateway;
-            $transaction_id = apply_filters( 'wpinv_get_invoice_transaction_id-' . $gateway, $this->ID );
+            $transaction_id = apply_filters('wpinv_get_invoice_transaction_id-' . $gateway, $this->ID);
         }
 
         return $transaction_id;
     }
 
     private function setup_ip() {
-        $ip = $this->get_meta( '_wpinv_user_ip' );
+        $ip = $this->get_meta('_wpinv_user_ip');
         return $ip;
     }
 
@@ -381,62 +381,62 @@ 
     ///}
         
     private function setup_first_name() {
-        $first_name = $this->get_meta( '_wpinv_first_name' );
+        $first_name = $this->get_meta('_wpinv_first_name');
         return $first_name;
     }
     
     private function setup_last_name() {
-        $last_name = $this->get_meta( '_wpinv_last_name' );
+        $last_name = $this->get_meta('_wpinv_last_name');
         return $last_name;
     }
     
     private function setup_company() {
-        $company = $this->get_meta( '_wpinv_company' );
+        $company = $this->get_meta('_wpinv_company');
         return $company;
     }
     
     private function setup_vat_number() {
-        $vat_number = $this->get_meta( '_wpinv_vat_number' );
+        $vat_number = $this->get_meta('_wpinv_vat_number');
         return $vat_number;
     }
     
     private function setup_vat_rate() {
-        $vat_rate = $this->get_meta( '_wpinv_vat_rate' );
+        $vat_rate = $this->get_meta('_wpinv_vat_rate');
         return $vat_rate;
     }
     
     private function setup_adddress_confirmed() {
-        $adddress_confirmed = $this->get_meta( '_wpinv_adddress_confirmed' );
+        $adddress_confirmed = $this->get_meta('_wpinv_adddress_confirmed');
         return $adddress_confirmed;
     }
     
     private function setup_phone() {
-        $phone = $this->get_meta( '_wpinv_phone' );
+        $phone = $this->get_meta('_wpinv_phone');
         return $phone;
     }
     
     private function setup_address() {
-        $address = $this->get_meta( '_wpinv_address', true );
+        $address = $this->get_meta('_wpinv_address', true);
         return $address;
     }
     
     private function setup_city() {
-        $city = $this->get_meta( '_wpinv_city', true );
+        $city = $this->get_meta('_wpinv_city', true);
         return $city;
     }
     
     private function setup_country() {
-        $country = $this->get_meta( '_wpinv_country', true );
+        $country = $this->get_meta('_wpinv_country', true);
         return $country;
     }
     
     private function setup_state() {
-        $state = $this->get_meta( '_wpinv_state', true );
+        $state = $this->get_meta('_wpinv_state', true);
         return $state;
     }
     
     private function setup_zip() {
-        $zip = $this->get_meta( '_wpinv_zip', true );
+        $zip = $this->get_meta('_wpinv_zip', true);
         return $zip;
     }
 
@@ -445,7 +445,7 @@ 
             'user_id'        => $this->user_id,
             'first_name'     => $this->first_name,
             'last_name'      => $this->last_name,
-            'email'          => get_the_author_meta( 'email', $this->user_id ),
+            'email'          => get_the_author_meta('email', $this->user_id),
             'phone'          => $this->phone,
             'address'        => $this->address,
             'city'           => $this->city,
@@ -460,12 +460,12 @@ 
         );
         
         $user_info = array();
-        if ( isset( $this->payment_meta['user_info'] ) ) {
-            $user_info = maybe_unserialize( $this->payment_meta['user_info'] );
+        if (isset($this->payment_meta['user_info'])) {
+            $user_info = maybe_unserialize($this->payment_meta['user_info']);
             
-            if ( !empty( $user_info ) && isset( $user_info['user_id'] ) && $post = get_post( $this->ID ) ) {
+            if (!empty($user_info) && isset($user_info['user_id']) && $post = get_post($this->ID)) {
                 $this->user_id = $post->post_author;
-                $this->email = get_the_author_meta( 'email', $this->user_id );
+                $this->email = get_the_author_meta('email', $this->user_id);
                 
                 $user_info['user_id'] = $this->user_id;
                 $user_info['email'] = $this->email;
@@ -474,13 +474,13 @@ 
             }
         }
         
-        $user_info    = wp_parse_args( $user_info, $defaults );
+        $user_info = wp_parse_args($user_info, $defaults);
         
         // Get the user, but only if it's been created
-        $user = get_userdata( $this->user_id );
+        $user = get_userdata($this->user_id);
         
-        if ( !empty( $user ) && $user->ID > 0 ) {
-            if ( empty( $user_info ) ) {
+        if (!empty($user) && $user->ID > 0) {
+            if (empty($user_info)) {
                 $user_info = array(
                     'user_id'    => $user->ID,
                     'first_name' => $user->first_name,
@@ -489,23 +489,23 @@ 
                     'discount'   => '',
                 );
             } else {
-                foreach ( $user_info as $key => $value ) {
-                    if ( ! empty( $value ) ) {
+                foreach ($user_info as $key => $value) {
+                    if (!empty($value)) {
                         continue;
                     }
 
-                    switch( $key ) {
+                    switch ($key) {
                         case 'user_id':
-                            $user_info[ $key ] = $user->ID;
+                            $user_info[$key] = $user->ID;
                             break;
                         case 'first_name':
-                            $user_info[ $key ] = $user->first_name;
+                            $user_info[$key] = $user->first_name;
                             break;
                         case 'last_name':
-                            $user_info[ $key ] = $user->last_name;
+                            $user_info[$key] = $user->last_name;
                             break;
                         case 'email':
-                            $user_info[ $key ] = $user->user_email;
+                            $user_info[$key] = $user->user_email;
                             break;
                     }
                 }
@@ -516,25 +516,25 @@ 
     }
 
     private function setup_invoice_key() {
-        $key = $this->get_meta( '_wpinv_key', true );
+        $key = $this->get_meta('_wpinv_key', true);
         
         return $key;
     }
 
     private function setup_invoice_number() {
-        $number = $this->get_meta( '_wpinv_number', true );
+        $number = $this->get_meta('_wpinv_number', true);
 
-        if ( !$number ) {
+        if (!$number) {
             $number = $this->ID;
 
-            if ( $this->status == 'auto-draft' ) {
-                if ( wpinv_sequential_number_active( $this->post_type ) ) {
-                    $next_number = wpinv_get_next_invoice_number( $this->post_type );
+            if ($this->status == 'auto-draft') {
+                if (wpinv_sequential_number_active($this->post_type)) {
+                    $next_number = wpinv_get_next_invoice_number($this->post_type);
                     $number      = $next_number;
                 }
             }
             
-            $number = wpinv_format_invoice_number( $number, $this->post_type );
+            $number = wpinv_format_invoice_number($number, $this->post_type);
         }
 
         return $number;
@@ -543,10 +543,10 @@ 
     private function insert_invoice() {
         global $wpdb;
 
-        if ( empty( $this->post_type ) ) {
-            if ( !empty( $this->ID ) && $post_type = get_post_type( $this->ID ) ) {
+        if (empty($this->post_type)) {
+            if (!empty($this->ID) && $post_type = get_post_type($this->ID)) {
                 $this->post_type = $post_type;
-            } else if ( !empty( $this->parent_invoice ) && $post_type = get_post_type( $this->parent_invoice ) ) {
+            } else if (!empty($this->parent_invoice) && $post_type = get_post_type($this->parent_invoice)) {
                 $this->post_type = $post_type;
             } else {
                 $this->post_type = 'wpi_invoice';
@@ -554,16 +554,16 @@ 
         }
 
         $invoice_number = $this->ID;
-        if ( $number = $this->get_meta( '_wpinv_number', true ) ) {
+        if ($number = $this->get_meta('_wpinv_number', true)) {
             $invoice_number = $number;
         }
 
-        if ( empty( $this->key ) ) {
+        if (empty($this->key)) {
             $this->key = self::generate_key();
             $this->pending['key'] = $this->key;
         }
 
-        if ( empty( $this->ip ) ) {
+        if (empty($this->ip)) {
             $this->ip = wpinv_get_ip();
             $this->pending['ip'] = $this->ip;
         }
@@ -600,61 +600,61 @@ 
                         'post_status'   => $this->status,
                         'post_author'   => $this->user_id,
                         'post_type'     => $this->post_type,
-                        'post_date'     => ! empty( $this->date ) && $this->date != '0000-00-00 00:00:00' ? $this->date : current_time( 'mysql' ),
-                        'post_date_gmt' => ! empty( $this->date ) && $this->date != '0000-00-00 00:00:00' ? get_gmt_from_date( $this->date ) : current_time( 'mysql', 1 ),
+                        'post_date'     => !empty($this->date) && $this->date != '0000-00-00 00:00:00' ? $this->date : current_time('mysql'),
+                        'post_date_gmt' => !empty($this->date) && $this->date != '0000-00-00 00:00:00' ? get_gmt_from_date($this->date) : current_time('mysql', 1),
                         'post_parent'   => $this->parent_invoice,
                     );
-        $args = apply_filters( 'wpinv_insert_invoice_args', $post_data, $this );
+        $args = apply_filters('wpinv_insert_invoice_args', $post_data, $this);
 
         // Create a blank invoice
-        if ( !empty( $this->ID ) ) {
-            $args['ID']         = $this->ID;
+        if (!empty($this->ID)) {
+            $args['ID'] = $this->ID;
 
-            $invoice_id = wp_update_post( $args, true );
+            $invoice_id = wp_update_post($args, true);
         } else {
-            $invoice_id = wp_insert_post( $args, true );
+            $invoice_id = wp_insert_post($args, true);
         }
 
-        if ( is_wp_error( $invoice_id ) ) {
+        if (is_wp_error($invoice_id)) {
             return false;
         }
 
-        if ( !empty( $invoice_id ) ) {
+        if (!empty($invoice_id)) {
             $this->ID  = $invoice_id;
             $this->_ID = $invoice_id;
 
-            $this->payment_meta = apply_filters( 'wpinv_payment_meta', $this->payment_meta, $payment_data );
-            if ( ! empty( $this->payment_meta['fees'] ) ) {
-                $this->fees = array_merge( $this->fees, $this->payment_meta['fees'] );
-                foreach( $this->fees as $fee ) {
-                    $this->increase_fees( $fee['amount'] );
+            $this->payment_meta = apply_filters('wpinv_payment_meta', $this->payment_meta, $payment_data);
+            if (!empty($this->payment_meta['fees'])) {
+                $this->fees = array_merge($this->fees, $this->payment_meta['fees']);
+                foreach ($this->fees as $fee) {
+                    $this->increase_fees($fee['amount']);
                 }
             }
 
-            $this->update_meta( '_wpinv_payment_meta', $this->payment_meta );            
+            $this->update_meta('_wpinv_payment_meta', $this->payment_meta);            
             $this->new = true;
         }
 
         return $this->ID;
     }
 
-    public function save( $setup = false ) {
+    public function save($setup = false) {
         global $wpi_session;
         
         $saved = false;
-        if ( empty( $this->items ) ) {
+        if (empty($this->items)) {
             return $saved; // Don't save empty invoice.
         }
         
-        if ( empty( $this->key ) ) {
+        if (empty($this->key)) {
             $this->key = self::generate_key();
             $this->pending['key'] = $this->key;
         }
         
-        if ( empty( $this->ID ) ) {
+        if (empty($this->ID)) {
             $invoice_id = $this->insert_invoice();
 
-            if ( false === $invoice_id ) {
+            if (false === $invoice_id) {
                 $saved = false;
             } else {
                 $this->ID = $invoice_id;
@@ -662,27 +662,27 @@ 
         }
 
         // If we have something pending, let's save it
-        if ( !empty( $this->pending ) ) {
+        if (!empty($this->pending)) {
             $total_increase = 0;
             $total_decrease = 0;
 
-            foreach ( $this->pending as $key => $value ) {
-                switch( $key ) {
+            foreach ($this->pending as $key => $value) {
+                switch ($key) {
                     case 'items':
                         // Update totals for pending items
-                        foreach ( $this->pending[ $key ] as $item ) {
-                            switch( $item['action'] ) {
+                        foreach ($this->pending[$key] as $item) {
+                            switch ($item['action']) {
                                 case 'add':
                                     $price = $item['price'];
                                     $taxes = $item['tax'];
 
-                                    if ( 'publish' === $this->status ) {
+                                    if ('publish' === $this->status) {
                                         $total_increase += $price;
                                     }
                                     break;
 
                                 case 'remove':
-                                    if ( 'publish' === $this->status ) {
+                                    if ('publish' === $this->status) {
                                         $total_decrease += $item['price'];
                                     }
                                     break;
@@ -690,16 +690,16 @@ 
                         }
                         break;
                     case 'fees':
-                        if ( 'publish' !== $this->status ) {
+                        if ('publish' !== $this->status) {
                             break;
                         }
 
-                        if ( empty( $this->pending[ $key ] ) ) {
+                        if (empty($this->pending[$key])) {
                             break;
                         }
 
-                        foreach ( $this->pending[ $key ] as $fee ) {
-                            switch( $fee['action'] ) {
+                        foreach ($this->pending[$key] as $fee) {
+                            switch ($fee['action']) {
                                 case 'add':
                                     $total_increase += $fee['amount'];
                                     break;
@@ -711,83 +711,83 @@ 
                         }
                         break;
                     case 'status':
-                        $this->update_status( $this->status );
+                        $this->update_status($this->status);
                         break;
                     case 'gateway':
-                        $this->update_meta( '_wpinv_gateway', $this->gateway );
+                        $this->update_meta('_wpinv_gateway', $this->gateway);
                         break;
                     case 'mode':
-                        $this->update_meta( '_wpinv_mode', $this->mode );
+                        $this->update_meta('_wpinv_mode', $this->mode);
                         break;
                     case 'transaction_id':
-                        $this->update_meta( '_wpinv_transaction_id', $this->transaction_id );
+                        $this->update_meta('_wpinv_transaction_id', $this->transaction_id);
                         break;
                     case 'ip':
-                        $this->update_meta( '_wpinv_user_ip', $this->ip );
+                        $this->update_meta('_wpinv_user_ip', $this->ip);
                         break;
                     ///case 'user_id':
                         ///$this->update_meta( '_wpinv_user_id', $this->user_id );
                         ///$this->user_info['user_id'] = $this->user_id;
                         ///break;
                     case 'first_name':
-                        $this->update_meta( '_wpinv_first_name', $this->first_name );
+                        $this->update_meta('_wpinv_first_name', $this->first_name);
                         $this->user_info['first_name'] = $this->first_name;
                         break;
                     case 'last_name':
-                        $this->update_meta( '_wpinv_last_name', $this->last_name );
+                        $this->update_meta('_wpinv_last_name', $this->last_name);
                         $this->user_info['last_name'] = $this->last_name;
                         break;
                     case 'phone':
-                        $this->update_meta( '_wpinv_phone', $this->phone );
+                        $this->update_meta('_wpinv_phone', $this->phone);
                         $this->user_info['phone'] = $this->phone;
                         break;
                     case 'address':
-                        $this->update_meta( '_wpinv_address', $this->address );
+                        $this->update_meta('_wpinv_address', $this->address);
                         $this->user_info['address'] = $this->address;
                         break;
                     case 'city':
-                        $this->update_meta( '_wpinv_city', $this->city );
+                        $this->update_meta('_wpinv_city', $this->city);
                         $this->user_info['city'] = $this->city;
                         break;
                     case 'country':
-                        $this->update_meta( '_wpinv_country', $this->country );
+                        $this->update_meta('_wpinv_country', $this->country);
                         $this->user_info['country'] = $this->country;
                         break;
                     case 'state':
-                        $this->update_meta( '_wpinv_state', $this->state );
+                        $this->update_meta('_wpinv_state', $this->state);
                         $this->user_info['state'] = $this->state;
                         break;
                     case 'zip':
-                        $this->update_meta( '_wpinv_zip', $this->zip );
+                        $this->update_meta('_wpinv_zip', $this->zip);
                         $this->user_info['zip'] = $this->zip;
                         break;
                     case 'company':
-                        $this->update_meta( '_wpinv_company', $this->company );
+                        $this->update_meta('_wpinv_company', $this->company);
                         $this->user_info['company'] = $this->company;
                         break;
                     case 'vat_number':
-                        $this->update_meta( '_wpinv_vat_number', $this->vat_number );
+                        $this->update_meta('_wpinv_vat_number', $this->vat_number);
                         $this->user_info['vat_number'] = $this->vat_number;
                         
-                        $vat_info = $wpi_session->get( 'user_vat_data' );
-                        if ( $this->vat_number && !empty( $vat_info ) && isset( $vat_info['number'] ) && isset( $vat_info['valid'] ) && $vat_info['number'] == $this->vat_number ) {
-                            $adddress_confirmed = isset( $vat_info['adddress_confirmed'] ) ? $vat_info['adddress_confirmed'] : false;
-                            $this->update_meta( '_wpinv_adddress_confirmed', (bool)$adddress_confirmed );
+                        $vat_info = $wpi_session->get('user_vat_data');
+                        if ($this->vat_number && !empty($vat_info) && isset($vat_info['number']) && isset($vat_info['valid']) && $vat_info['number'] == $this->vat_number) {
+                            $adddress_confirmed = isset($vat_info['adddress_confirmed']) ? $vat_info['adddress_confirmed'] : false;
+                            $this->update_meta('_wpinv_adddress_confirmed', (bool)$adddress_confirmed);
                             $this->user_info['adddress_confirmed'] = (bool)$adddress_confirmed;
                         }
     
                         break;
                     case 'vat_rate':
-                        $this->update_meta( '_wpinv_vat_rate', $this->vat_rate );
+                        $this->update_meta('_wpinv_vat_rate', $this->vat_rate);
                         $this->user_info['vat_rate'] = $this->vat_rate;
                         break;
                     case 'adddress_confirmed':
-                        $this->update_meta( '_wpinv_adddress_confirmed', $this->adddress_confirmed );
+                        $this->update_meta('_wpinv_adddress_confirmed', $this->adddress_confirmed);
                         $this->user_info['adddress_confirmed'] = $this->adddress_confirmed;
                         break;
                     
                     case 'key':
-                        $this->update_meta( '_wpinv_key', $this->key );
+                        $this->update_meta('_wpinv_key', $this->key);
                         break;
                     case 'date':
                         $args = array(
@@ -796,49 +796,49 @@ 
                             'edit_date' => true,
                         );
 
-                        wp_update_post( $args );
+                        wp_update_post($args);
                         break;
                     case 'due_date':
-                        if ( empty( $this->due_date ) ) {
+                        if (empty($this->due_date)) {
                             $this->due_date = 'none';
                         }
                         
-                        $this->update_meta( '_wpinv_due_date', $this->due_date );
+                        $this->update_meta('_wpinv_due_date', $this->due_date);
                         break;
                     case 'completed_date':
-                        $this->update_meta( '_wpinv_completed_date', $this->completed_date );
+                        $this->update_meta('_wpinv_completed_date', $this->completed_date);
                         break;
                     case 'discounts':
-                        if ( ! is_array( $this->discounts ) ) {
-                            $this->discounts = explode( ',', $this->discounts );
+                        if (!is_array($this->discounts)) {
+                            $this->discounts = explode(',', $this->discounts);
                         }
 
-                        $this->user_info['discount'] = implode( ',', $this->discounts );
+                        $this->user_info['discount'] = implode(',', $this->discounts);
                         break;
                     case 'discount':
-                        $this->update_meta( '_wpinv_discount', wpinv_round_amount( $this->discount ) );
+                        $this->update_meta('_wpinv_discount', wpinv_round_amount($this->discount));
                         break;
                     case 'discount_code':
-                        $this->update_meta( '_wpinv_discount_code', $this->discount_code );
+                        $this->update_meta('_wpinv_discount_code', $this->discount_code);
                         break;
                     case 'parent_invoice':
                         $args = array(
                             'ID'          => $this->ID,
                             'post_parent' => $this->parent_invoice,
                         );
-                        wp_update_post( $args );
+                        wp_update_post($args);
                         break;
                     default:
-                        do_action( 'wpinv_save', $this, $key );
+                        do_action('wpinv_save', $this, $key);
                         break;
                 }
             }
 
-            $this->update_meta( '_wpinv_subtotal', wpinv_round_amount( $this->subtotal ) );
-            $this->update_meta( '_wpinv_total', wpinv_round_amount( $this->total ) );
-            $this->update_meta( '_wpinv_tax', wpinv_round_amount( $this->tax ) );
+            $this->update_meta('_wpinv_subtotal', wpinv_round_amount($this->subtotal));
+            $this->update_meta('_wpinv_total', wpinv_round_amount($this->total));
+            $this->update_meta('_wpinv_tax', wpinv_round_amount($this->tax));
             
-            $this->items    = array_values( $this->items );
+            $this->items = array_values($this->items);
             
             $new_meta = array(
                 'items'         => $this->items,
@@ -849,12 +849,12 @@ 
             );
             
             $meta        = $this->get_meta();
-            $merged_meta = array_merge( $meta, $new_meta );
+            $merged_meta = array_merge($meta, $new_meta);
 
             // Only save the payment meta if it's changed
-            if ( md5( serialize( $meta ) ) !== md5( serialize( $merged_meta) ) ) {
-                $updated     = $this->update_meta( '_wpinv_payment_meta', $merged_meta );
-                if ( false !== $updated ) {
+            if (md5(serialize($meta)) !== md5(serialize($merged_meta))) {
+                $updated = $this->update_meta('_wpinv_payment_meta', $merged_meta);
+                if (false !== $updated) {
                     $saved = true;
                 }
             }
@@ -862,15 +862,15 @@ 
             $this->pending = array();
             $saved         = true;
         } else {
-            $this->update_meta( '_wpinv_subtotal', wpinv_round_amount( $this->subtotal ) );
-            $this->update_meta( '_wpinv_total', wpinv_round_amount( $this->total ) );
-            $this->update_meta( '_wpinv_tax', wpinv_round_amount( $this->tax ) );
+            $this->update_meta('_wpinv_subtotal', wpinv_round_amount($this->subtotal));
+            $this->update_meta('_wpinv_total', wpinv_round_amount($this->total));
+            $this->update_meta('_wpinv_tax', wpinv_round_amount($this->tax));
         }
         
-        do_action( 'wpinv_invoice_save', $this, $saved );
+        do_action('wpinv_invoice_save', $this, $saved);
 
-        if ( true === $saved || $setup ) {
-            $this->setup_invoice( $this->ID );
+        if (true === $saved || $setup) {
+            $this->setup_invoice($this->ID);
         }
         
         $this->refresh_item_ids();
@@ -878,7 +878,7 @@ 
         return $saved;
     }
     
-    public function add_fee( $args, $global = true ) {
+    public function add_fee($args, $global = true) {
         $default_args = array(
             'label'       => '',
             'amount'      => 0,
@@ -888,75 +888,75 @@ 
             'item_id'     => 0,
         );
 
-        $fee = wp_parse_args( $args, $default_args );
+        $fee = wp_parse_args($args, $default_args);
         
-        if ( !empty( $fee['label'] ) ) {
+        if (!empty($fee['label'])) {
             return false;
         }
         
-        $fee['id']  = sanitize_title( $fee['label'] );
+        $fee['id'] = sanitize_title($fee['label']);
         
-        $this->fees[]               = $fee;
+        $this->fees[] = $fee;
         
         $added_fee               = $fee;
         $added_fee['action']     = 'add';
         $this->pending['fees'][] = $added_fee;
-        reset( $this->fees );
+        reset($this->fees);
 
-        $this->increase_fees( $fee['amount'] );
+        $this->increase_fees($fee['amount']);
         return true;
     }
 
-    public function remove_fee( $key ) {
+    public function remove_fee($key) {
         $removed = false;
 
-        if ( is_numeric( $key ) ) {
-            $removed = $this->remove_fee_by( 'index', $key );
+        if (is_numeric($key)) {
+            $removed = $this->remove_fee_by('index', $key);
         }
 
         return $removed;
     }
 
-    public function remove_fee_by( $key, $value, $global = false ) {
-        $allowed_fee_keys = apply_filters( 'wpinv_fee_keys', array(
+    public function remove_fee_by($key, $value, $global = false) {
+        $allowed_fee_keys = apply_filters('wpinv_fee_keys', array(
             'index', 'label', 'amount', 'type',
-        ) );
+        ));
 
-        if ( ! in_array( $key, $allowed_fee_keys ) ) {
+        if (!in_array($key, $allowed_fee_keys)) {
             return false;
         }
 
         $removed = false;
-        if ( 'index' === $key && array_key_exists( $value, $this->fees ) ) {
-            $removed_fee             = $this->fees[ $value ];
+        if ('index' === $key && array_key_exists($value, $this->fees)) {
+            $removed_fee             = $this->fees[$value];
             $removed_fee['action']   = 'remove';
             $this->pending['fees'][] = $removed_fee;
 
-            $this->decrease_fees( $removed_fee['amount'] );
+            $this->decrease_fees($removed_fee['amount']);
 
-            unset( $this->fees[ $value ] );
+            unset($this->fees[$value]);
             $removed = true;
-        } else if ( 'index' !== $key ) {
-            foreach ( $this->fees as $index => $fee ) {
-                if ( isset( $fee[ $key ] ) && $fee[ $key ] == $value ) {
+        } else if ('index' !== $key) {
+            foreach ($this->fees as $index => $fee) {
+                if (isset($fee[$key]) && $fee[$key] == $value) {
                     $removed_fee             = $fee;
                     $removed_fee['action']   = 'remove';
                     $this->pending['fees'][] = $removed_fee;
 
-                    $this->decrease_fees( $removed_fee['amount'] );
+                    $this->decrease_fees($removed_fee['amount']);
 
-                    unset( $this->fees[ $index ] );
+                    unset($this->fees[$index]);
                     $removed = true;
 
-                    if ( false === $global ) {
+                    if (false === $global) {
                         break;
                     }
                 }
             }
         }
 
-        if ( true === $removed ) {
-            $this->fees = array_values( $this->fees );
+        if (true === $removed) {
+            $this->fees = array_values($this->fees);
         }
 
         return $removed;
@@ -964,35 +964,35 @@ 
 
     
 
-    public function add_note( $note = '', $customer_type = false, $added_by_user = false, $system = false ) {
+    public function add_note($note = '', $customer_type = false, $added_by_user = false, $system = false) {
         // Bail if no note specified
-        if( !$note ) {
+        if (!$note) {
             return false;
         }
 
-        if ( empty( $this->ID ) )
+        if (empty($this->ID))
             return false;
         
-        if ( ( ( is_user_logged_in() && current_user_can( 'manage_options' ) ) || $added_by_user ) && !$system ) {
-            $user                 = get_user_by( 'id', get_current_user_id() );
+        if (((is_user_logged_in() && current_user_can('manage_options')) || $added_by_user) && !$system) {
+            $user                 = get_user_by('id', get_current_user_id());
             $comment_author       = $user->display_name;
             $comment_author_email = $user->user_email;
         } else {
-            $comment_author       = __( 'System', 'invoicing' );
-            $comment_author_email = strtolower( __( 'System', 'invoicing' ) ) . '@';
-            $comment_author_email .= isset( $_SERVER['HTTP_HOST'] ) ? str_replace( 'www.', '', $_SERVER['HTTP_HOST'] ) : 'noreply.com';
-            $comment_author_email = sanitize_email( $comment_author_email );
+            $comment_author       = __('System', 'invoicing');
+            $comment_author_email = strtolower(__('System', 'invoicing')) . '@';
+            $comment_author_email .= isset($_SERVER['HTTP_HOST']) ? str_replace('www.', '', $_SERVER['HTTP_HOST']) : 'noreply.com';
+            $comment_author_email = sanitize_email($comment_author_email);
         }
 
-        do_action( 'wpinv_pre_insert_invoice_note', $this->ID, $note, $customer_type );
+        do_action('wpinv_pre_insert_invoice_note', $this->ID, $note, $customer_type);
 
-        $note_id = wp_insert_comment( wp_filter_comment( array(
+        $note_id = wp_insert_comment(wp_filter_comment(array(
             'comment_post_ID'      => $this->ID,
             'comment_content'      => $note,
             'comment_agent'        => 'WPInvoicing',
             'user_id'              => is_admin() ? get_current_user_id() : 0,
-            'comment_date'         => current_time( 'mysql' ),
-            'comment_date_gmt'     => current_time( 'mysql', 1 ),
+            'comment_date'         => current_time('mysql'),
+            'comment_date_gmt'     => current_time('mysql', 1),
             'comment_approved'     => 1,
             'comment_parent'       => 0,
             'comment_author'       => $comment_author,
@@ -1000,53 +1000,53 @@ 
             'comment_author_url'   => '',
             'comment_author_email' => $comment_author_email,
             'comment_type'         => 'wpinv_note'
-        ) ) );
+        )));
 
-        do_action( 'wpinv_insert_payment_note', $note_id, $this->ID, $note );
+        do_action('wpinv_insert_payment_note', $note_id, $this->ID, $note);
         
-        if ( $customer_type ) {
-            add_comment_meta( $note_id, '_wpi_customer_note', 1 );
+        if ($customer_type) {
+            add_comment_meta($note_id, '_wpi_customer_note', 1);
 
-            do_action( 'wpinv_new_customer_note', array( 'invoice_id' => $this->ID, 'user_note' => $note ) );
+            do_action('wpinv_new_customer_note', array('invoice_id' => $this->ID, 'user_note' => $note));
         }
 
         return $note_id;
     }
 
-    private function increase_subtotal( $amount = 0.00 ) {
-        $amount          = (float) $amount;
+    private function increase_subtotal($amount = 0.00) {
+        $amount          = (float)$amount;
         $this->subtotal += $amount;
-        $this->subtotal  = wpinv_round_amount( $this->subtotal );
+        $this->subtotal  = wpinv_round_amount($this->subtotal);
 
         $this->recalculate_total();
     }
 
-    private function decrease_subtotal( $amount = 0.00 ) {
-        $amount          = (float) $amount;
+    private function decrease_subtotal($amount = 0.00) {
+        $amount          = (float)$amount;
         $this->subtotal -= $amount;
-        $this->subtotal  = wpinv_round_amount( $this->subtotal );
+        $this->subtotal  = wpinv_round_amount($this->subtotal);
 
-        if ( $this->subtotal < 0 ) {
+        if ($this->subtotal < 0) {
             $this->subtotal = 0;
         }
 
         $this->recalculate_total();
     }
 
-    private function increase_fees( $amount = 0.00 ) {
+    private function increase_fees($amount = 0.00) {
         $amount            = (float)$amount;
         $this->fees_total += $amount;
-        $this->fees_total  = wpinv_round_amount( $this->fees_total );
+        $this->fees_total  = wpinv_round_amount($this->fees_total);
 
         $this->recalculate_total();
     }
 
-    private function decrease_fees( $amount = 0.00 ) {
-        $amount            = (float) $amount;
+    private function decrease_fees($amount = 0.00) {
+        $amount            = (float)$amount;
         $this->fees_total -= $amount;
-        $this->fees_total  = wpinv_round_amount( $this->fees_total );
+        $this->fees_total  = wpinv_round_amount($this->fees_total);
 
-        if ( $this->fees_total < 0 ) {
+        if ($this->fees_total < 0) {
             $this->fees_total = 0;
         }
 
@@ -1057,54 +1057,54 @@ 
         global $wpi_nosave;
         
         $this->total = $this->subtotal + $this->tax + $this->fees_total;
-        $this->total = wpinv_round_amount( $this->total );
+        $this->total = wpinv_round_amount($this->total);
         
-        do_action( 'wpinv_invoice_recalculate_total', $this, $wpi_nosave );
+        do_action('wpinv_invoice_recalculate_total', $this, $wpi_nosave);
     }
     
-    public function increase_tax( $amount = 0.00 ) {
-        $amount       = (float) $amount;
+    public function increase_tax($amount = 0.00) {
+        $amount       = (float)$amount;
         $this->tax   += $amount;
 
         $this->recalculate_total();
     }
 
-    public function decrease_tax( $amount = 0.00 ) {
-        $amount     = (float) $amount;
+    public function decrease_tax($amount = 0.00) {
+        $amount     = (float)$amount;
         $this->tax -= $amount;
 
-        if ( $this->tax < 0 ) {
+        if ($this->tax < 0) {
             $this->tax = 0;
         }
 
         $this->recalculate_total();
     }
 
-    public function update_status( $new_status = false, $note = '', $manual = false ) {
-        $old_status = ! empty( $this->old_status ) ? $this->old_status : get_post_status( $this->ID );
+    public function update_status($new_status = false, $note = '', $manual = false) {
+        $old_status = !empty($this->old_status) ? $this->old_status : get_post_status($this->ID);
         
-        if ( $old_status === $new_status && in_array( $new_status, array_keys( wpinv_get_invoice_statuses() ) ) ) {
+        if ($old_status === $new_status && in_array($new_status, array_keys(wpinv_get_invoice_statuses()))) {
             return false; // Don't permit status changes that aren't changes
         }
 
-        $do_change = apply_filters( 'wpinv_should_update_invoice_status', true, $this->ID, $new_status, $old_status );
+        $do_change = apply_filters('wpinv_should_update_invoice_status', true, $this->ID, $new_status, $old_status);
         $updated = false;
 
-        if ( $do_change ) {
-            do_action( 'wpinv_before_invoice_status_change', $this->ID, $new_status, $old_status );
+        if ($do_change) {
+            do_action('wpinv_before_invoice_status_change', $this->ID, $new_status, $old_status);
 
             $update_post_data                   = array();
             $update_post_data['ID']             = $this->ID;
             $update_post_data['post_status']    = $new_status;
-            $update_post_data['edit_date']      = current_time( 'mysql', 0 );
-            $update_post_data['edit_date_gmt']  = current_time( 'mysql', 1 );
+            $update_post_data['edit_date']      = current_time('mysql', 0);
+            $update_post_data['edit_date_gmt']  = current_time('mysql', 1);
             
-            $update_post_data = apply_filters( 'wpinv_update_invoice_status_fields', $update_post_data, $this->ID );
+            $update_post_data = apply_filters('wpinv_update_invoice_status_fields', $update_post_data, $this->ID);
 
-            $updated = wp_update_post( $update_post_data );     
+            $updated = wp_update_post($update_post_data);     
            
             // Process any specific status functions
-            switch( $new_status ) {
+            switch ($new_status) {
                 case 'wpi-refunded':
                     $this->process_refund();
                     break;
@@ -1117,9 +1117,9 @@ 
             }
             
             // Status was changed.
-            do_action( 'wpinv_status_' . $new_status, $this->ID, $old_status );
-            do_action( 'wpinv_status_' . $old_status . '_to_' . $new_status, $this->ID, $old_status );
-            do_action( 'wpinv_update_status', $this->ID, $new_status, $old_status );
+            do_action('wpinv_status_' . $new_status, $this->ID, $old_status);
+            do_action('wpinv_status_' . $old_status . '_to_' . $new_status, $this->ID, $old_status);
+            do_action('wpinv_update_status', $this->ID, $new_status, $old_status);
         }
 
         return $updated;
@@ -1133,72 +1133,72 @@ 
         $this->save();
     }
 
-    public function update_meta( $meta_key = '', $meta_value = '', $prev_value = '' ) {
-        if ( empty( $meta_key ) ) {
+    public function update_meta($meta_key = '', $meta_value = '', $prev_value = '') {
+        if (empty($meta_key)) {
             return false;
         }
 
-        if ( $meta_key == 'key' || $meta_key == 'date' ) {
+        if ($meta_key == 'key' || $meta_key == 'date') {
             $current_meta = $this->get_meta();
-            $current_meta[ $meta_key ] = $meta_value;
+            $current_meta[$meta_key] = $meta_value;
 
             $meta_key     = '_wpinv_payment_meta';
             $meta_value   = $current_meta;
         }
 
-        $meta_value = apply_filters( 'wpinv_update_payment_meta_' . $meta_key, $meta_value, $this->ID );
+        $meta_value = apply_filters('wpinv_update_payment_meta_' . $meta_key, $meta_value, $this->ID);
         
-        if ( $meta_key == '_wpinv_completed_date' && !empty( $meta_value ) ) {
+        if ($meta_key == '_wpinv_completed_date' && !empty($meta_value)) {
             $args = array(
                 'ID'                => $this->ID,
                 'post_date'         => $meta_value,
                 'edit_date'         => true,
-                'post_date_gmt'     => get_gmt_from_date( $meta_value ),
+                'post_date_gmt'     => get_gmt_from_date($meta_value),
                 'post_modified'     => $meta_value,
-                'post_modified_gmt' => get_gmt_from_date( $meta_value )
+                'post_modified_gmt' => get_gmt_from_date($meta_value)
             );
-            wp_update_post( $args );
+            wp_update_post($args);
         }
         
-        return update_post_meta( $this->ID, $meta_key, $meta_value, $prev_value );
+        return update_post_meta($this->ID, $meta_key, $meta_value, $prev_value);
     }
 
     private function process_refund() {
         $process_refund = true;
 
         // If the payment was not in publish, don't decrement stats as they were never incremented
-        if ( 'publish' != $this->old_status || 'wpi-refunded' != $this->status ) {
+        if ('publish' != $this->old_status || 'wpi-refunded' != $this->status) {
             $process_refund = false;
         }
 
         // Allow extensions to filter for their own payment types, Example: Recurring Payments
-        $process_refund = apply_filters( 'wpinv_should_process_refund', $process_refund, $this );
+        $process_refund = apply_filters('wpinv_should_process_refund', $process_refund, $this);
 
-        if ( false === $process_refund ) {
+        if (false === $process_refund) {
             return;
         }
 
-        do_action( 'wpinv_pre_refund_invoice', $this );
+        do_action('wpinv_pre_refund_invoice', $this);
         
-        $decrease_store_earnings = apply_filters( 'wpinv_decrease_store_earnings_on_refund', true, $this );
-        $decrease_customer_value = apply_filters( 'wpinv_decrease_customer_value_on_refund', true, $this );
-        $decrease_purchase_count = apply_filters( 'wpinv_decrease_customer_purchase_count_on_refund', true, $this );
+        $decrease_store_earnings = apply_filters('wpinv_decrease_store_earnings_on_refund', true, $this);
+        $decrease_customer_value = apply_filters('wpinv_decrease_customer_value_on_refund', true, $this);
+        $decrease_purchase_count = apply_filters('wpinv_decrease_customer_purchase_count_on_refund', true, $this);
         
-        do_action( 'wpinv_post_refund_invoice', $this );
+        do_action('wpinv_post_refund_invoice', $this);
     }
 
     private function process_failure() {
         $discounts = $this->discounts;
-        if ( empty( $discounts ) ) {
+        if (empty($discounts)) {
             return;
         }
 
-        if ( ! is_array( $discounts ) ) {
-            $discounts = array_map( 'trim', explode( ',', $discounts ) );
+        if (!is_array($discounts)) {
+            $discounts = array_map('trim', explode(',', $discounts));
         }
 
-        foreach ( $discounts as $discount ) {
-            wpinv_decrease_discount_usage( $discount );
+        foreach ($discounts as $discount) {
+            wpinv_decrease_discount_usage($discount);
         }
     }
     
@@ -1206,92 +1206,92 @@ 
         $process_pending = true;
 
         // If the payment was not in publish or revoked status, don't decrement stats as they were never incremented
-        if ( ( 'publish' != $this->old_status && 'revoked' != $this->old_status ) || 'wpi-pending' != $this->status ) {
+        if (('publish' != $this->old_status && 'revoked' != $this->old_status) || 'wpi-pending' != $this->status) {
             $process_pending = false;
         }
 
         // Allow extensions to filter for their own payment types, Example: Recurring Payments
-        $process_pending = apply_filters( 'wpinv_should_process_pending', $process_pending, $this );
+        $process_pending = apply_filters('wpinv_should_process_pending', $process_pending, $this);
 
-        if ( false === $process_pending ) {
+        if (false === $process_pending) {
             return;
         }
 
-        $decrease_store_earnings = apply_filters( 'wpinv_decrease_store_earnings_on_pending', true, $this );
-        $decrease_customer_value = apply_filters( 'wpinv_decrease_customer_value_on_pending', true, $this );
-        $decrease_purchase_count = apply_filters( 'wpinv_decrease_customer_purchase_count_on_pending', true, $this );
+        $decrease_store_earnings = apply_filters('wpinv_decrease_store_earnings_on_pending', true, $this);
+        $decrease_customer_value = apply_filters('wpinv_decrease_customer_value_on_pending', true, $this);
+        $decrease_purchase_count = apply_filters('wpinv_decrease_customer_purchase_count_on_pending', true, $this);
 
         $this->completed_date = '';
-        $this->update_meta( '_wpinv_completed_date', '' );
+        $this->update_meta('_wpinv_completed_date', '');
     }
     
     // get data
-    public function get_meta( $meta_key = '_wpinv_payment_meta', $single = true ) {
-        $meta = get_post_meta( $this->ID, $meta_key, $single );
+    public function get_meta($meta_key = '_wpinv_payment_meta', $single = true) {
+        $meta = get_post_meta($this->ID, $meta_key, $single);
 
-        if ( $meta_key === '_wpinv_payment_meta' ) {
+        if ($meta_key === '_wpinv_payment_meta') {
 
-            if(!is_array($meta)){$meta = array();} // we need this to be an array so make sure it is.
+            if (!is_array($meta)) {$meta = array(); } // we need this to be an array so make sure it is.
 
-            if ( empty( $meta['key'] ) ) {
+            if (empty($meta['key'])) {
                 $meta['key'] = $this->setup_invoice_key();
             }
 
-            if ( empty( $meta['date'] ) ) {
-                $meta['date'] = get_post_field( 'post_date', $this->ID );
+            if (empty($meta['date'])) {
+                $meta['date'] = get_post_field('post_date', $this->ID);
             }
         }
 
-        $meta = apply_filters( 'wpinv_get_invoice_meta_' . $meta_key, $meta, $this->ID );
+        $meta = apply_filters('wpinv_get_invoice_meta_' . $meta_key, $meta, $this->ID);
 
-        return apply_filters( 'wpinv_get_invoice_meta', $meta, $this->ID, $meta_key );
+        return apply_filters('wpinv_get_invoice_meta', $meta, $this->ID, $meta_key);
     }
     
     public function get_description() {
-        $post = get_post( $this->ID );
+        $post = get_post($this->ID);
         
-        $description = !empty( $post ) ? $post->post_content : '';
-        return apply_filters( 'wpinv_get_description', $description, $this->ID, $this );
+        $description = !empty($post) ? $post->post_content : '';
+        return apply_filters('wpinv_get_description', $description, $this->ID, $this);
     }
     
-    public function get_status( $nicename = false ) {
-        if ( !$nicename ) {
+    public function get_status($nicename = false) {
+        if (!$nicename) {
             $status = $this->status;
         } else {
             $status = $this->status_nicename;
         }
         
-        return apply_filters( 'wpinv_get_status', $status, $nicename, $this->ID, $this );
+        return apply_filters('wpinv_get_status', $status, $nicename, $this->ID, $this);
     }
     
     public function get_cart_details() {
-        return apply_filters( 'wpinv_cart_details', $this->cart_details, $this->ID, $this );
+        return apply_filters('wpinv_cart_details', $this->cart_details, $this->ID, $this);
     }
     
-    public function get_subtotal( $currency = false ) {
-        $subtotal = wpinv_round_amount( $this->subtotal );
+    public function get_subtotal($currency = false) {
+        $subtotal = wpinv_round_amount($this->subtotal);
         
-        if ( $currency ) {
-            $subtotal = wpinv_price( wpinv_format_amount( $subtotal, NULL, !$currency ), $this->get_currency() );
+        if ($currency) {
+            $subtotal = wpinv_price(wpinv_format_amount($subtotal, NULL, !$currency), $this->get_currency());
         }
         
-        return apply_filters( 'wpinv_get_invoice_subtotal', $subtotal, $this->ID, $this, $currency );
+        return apply_filters('wpinv_get_invoice_subtotal', $subtotal, $this->ID, $this, $currency);
     }
     
-    public function get_total( $currency = false ) {        
-        if ( $this->is_free_trial() ) {
-            $total = wpinv_round_amount( 0 );
+    public function get_total($currency = false) {        
+        if ($this->is_free_trial()) {
+            $total = wpinv_round_amount(0);
         } else {
-            $total = wpinv_round_amount( $this->total );
+            $total = wpinv_round_amount($this->total);
         }
-        if ( $currency ) {
-            $total = wpinv_price( wpinv_format_amount( $total, NULL, !$currency ), $this->get_currency() );
+        if ($currency) {
+            $total = wpinv_price(wpinv_format_amount($total, NULL, !$currency), $this->get_currency());
         }
         
-        return apply_filters( 'wpinv_get_invoice_total', $total, $this->ID, $this, $currency );
+        return apply_filters('wpinv_get_invoice_total', $total, $this->ID, $this, $currency);
     }
     
-    public function get_recurring_details( $field = '', $currency = false ) {        
+    public function get_recurring_details($field = '', $currency = false) {        
         $data                 = array();
         $data['cart_details'] = $this->cart_details;
         $data['subtotal']     = $this->get_subtotal();
@@ -1299,45 +1299,45 @@ 
         $data['tax']          = $this->get_tax();
         $data['total']        = $this->get_total();
     
-        if ( !empty( $this->cart_details ) && ( $this->is_parent() || $this->is_renewal() ) ) {
+        if (!empty($this->cart_details) && ($this->is_parent() || $this->is_renewal())) {
             $is_free_trial = $this->is_free_trial();
-            $discounts = $this->get_discounts( true );
+            $discounts = $this->get_discounts(true);
             
-            if ( $is_free_trial || !empty( $discounts ) ) {
+            if ($is_free_trial || !empty($discounts)) {
                 $first_use_only = false;
                 
-                if ( !empty( $discounts ) ) {
-                    foreach ( $discounts as $key => $code ) {
-                        if ( wpinv_discount_is_recurring( $code, true ) ) {
+                if (!empty($discounts)) {
+                    foreach ($discounts as $key => $code) {
+                        if (wpinv_discount_is_recurring($code, true)) {
                             $first_use_only = true;
                             break;
                         }
                     }
                 }
                     
-                if ( !$first_use_only ) {
-                    $data['subtotal'] = wpinv_round_amount( $this->subtotal );
-                    $data['discount'] = wpinv_round_amount( $this->discount );
-                    $data['tax']      = wpinv_round_amount( $this->tax );
-                    $data['total']    = wpinv_round_amount( $this->total );
+                if (!$first_use_only) {
+                    $data['subtotal'] = wpinv_round_amount($this->subtotal);
+                    $data['discount'] = wpinv_round_amount($this->discount);
+                    $data['tax']      = wpinv_round_amount($this->tax);
+                    $data['total']    = wpinv_round_amount($this->total);
                 } else {
                     $cart_subtotal   = 0;
                     $cart_discount   = 0;
                     $cart_tax        = 0;
 
-                    foreach ( $this->cart_details as $key => $item ) {
-                        $item_quantity  = $item['quantity'] > 0 ? absint( $item['quantity'] ) : 1;
-                        $item_subtotal  = !empty( $item['subtotal'] ) ? $item['subtotal'] : $item['item_price'] * $item_quantity;
+                    foreach ($this->cart_details as $key => $item) {
+                        $item_quantity  = $item['quantity'] > 0 ? absint($item['quantity']) : 1;
+                        $item_subtotal  = !empty($item['subtotal']) ? $item['subtotal'] : $item['item_price'] * $item_quantity;
                         $item_discount  = 0;
-                        $item_tax       = $item_subtotal > 0 && !empty( $item['vat_rate'] ) ? ( $item_subtotal * 0.01 * (float)$item['vat_rate'] ) : 0;
+                        $item_tax       = $item_subtotal > 0 && !empty($item['vat_rate']) ? ($item_subtotal * 0.01 * (float)$item['vat_rate']) : 0;
                         
-                        if ( wpinv_prices_include_tax() ) {
-                            $item_subtotal -= wpinv_round_amount( $item_tax );
+                        if (wpinv_prices_include_tax()) {
+                            $item_subtotal -= wpinv_round_amount($item_tax);
                         }
                         
                         $item_total     = $item_subtotal - $item_discount + $item_tax;
                         // Do not allow totals to go negative
-                        if ( $item_total < 0 ) {
+                        if ($item_total < 0) {
                             $item_total = 0;
                         }
                         
@@ -1345,113 +1345,113 @@ 
                         $cart_discount  += (float)($item_discount);
                         $cart_tax       += (float)($item_tax);
                         
-                        $data['cart_details'][$key]['discount']   = wpinv_round_amount( $item_discount );
-                        $data['cart_details'][$key]['tax']        = wpinv_round_amount( $item_tax );
-                        $data['cart_details'][$key]['price']      = wpinv_round_amount( $item_total );
+                        $data['cart_details'][$key]['discount']   = wpinv_round_amount($item_discount);
+                        $data['cart_details'][$key]['tax']        = wpinv_round_amount($item_tax);
+                        $data['cart_details'][$key]['price']      = wpinv_round_amount($item_total);
                     }
                     
-                    $data['subtotal'] = wpinv_round_amount( $cart_subtotal );
-                    $data['discount'] = wpinv_round_amount( $cart_discount );
-                    $data['tax']      = wpinv_round_amount( $cart_tax );
-                    $data['total']    = wpinv_round_amount( $data['subtotal'] + $data['tax'] );
+                    $data['subtotal'] = wpinv_round_amount($cart_subtotal);
+                    $data['discount'] = wpinv_round_amount($cart_discount);
+                    $data['tax']      = wpinv_round_amount($cart_tax);
+                    $data['total']    = wpinv_round_amount($data['subtotal'] + $data['tax']);
                 }
             }
         }
         
-        $data = apply_filters( 'wpinv_get_invoice_recurring_details', $data, $this, $field, $currency );
+        $data = apply_filters('wpinv_get_invoice_recurring_details', $data, $this, $field, $currency);
 
-        if ( isset( $data[$field] ) ) {
-            return ( $currency ? wpinv_price( $data[$field], $this->get_currency() ) : $data[$field] );
+        if (isset($data[$field])) {
+            return ($currency ? wpinv_price($data[$field], $this->get_currency()) : $data[$field]);
         }
         
         return $data;
     }
     
-    public function get_final_tax( $currency = false ) {        
-        $final_total = wpinv_round_amount( $this->tax );
-        if ( $currency ) {
-            $final_total = wpinv_price( wpinv_format_amount( $final_total, NULL, !$currency ), $this->get_currency() );
+    public function get_final_tax($currency = false) {        
+        $final_total = wpinv_round_amount($this->tax);
+        if ($currency) {
+            $final_total = wpinv_price(wpinv_format_amount($final_total, NULL, !$currency), $this->get_currency());
         }
         
-        return apply_filters( 'wpinv_get_invoice_final_total', $final_total, $this, $currency );
+        return apply_filters('wpinv_get_invoice_final_total', $final_total, $this, $currency);
     }
     
-    public function get_discounts( $array = false ) {
+    public function get_discounts($array = false) {
         $discounts = $this->discounts;
-        if ( $array && $discounts ) {
-            $discounts = explode( ',', $discounts );
+        if ($array && $discounts) {
+            $discounts = explode(',', $discounts);
         }
-        return apply_filters( 'wpinv_payment_discounts', $discounts, $this->ID, $this, $array );
+        return apply_filters('wpinv_payment_discounts', $discounts, $this->ID, $this, $array);
     }
     
-    public function get_discount( $currency = false, $dash = false ) {
-        if ( !empty( $this->discounts ) ) {
+    public function get_discount($currency = false, $dash = false) {
+        if (!empty($this->discounts)) {
             global $ajax_cart_details;
             $ajax_cart_details = $this->get_cart_details();
             
-            if ( !empty( $ajax_cart_details ) && count( $ajax_cart_details ) == count( $this->items ) ) {
+            if (!empty($ajax_cart_details) && count($ajax_cart_details) == count($this->items)) {
                 $cart_items = $ajax_cart_details;
             } else {
                 $cart_items = $this->items;
             }
 
-            $this->discount = wpinv_get_cart_items_discount_amount( $cart_items , $this->discounts );
+            $this->discount = wpinv_get_cart_items_discount_amount($cart_items, $this->discounts);
         }
-        $discount   = wpinv_round_amount( $this->discount );
+        $discount   = wpinv_round_amount($this->discount);
         $dash       = $dash && $discount > 0 ? '&ndash;' : '';
         
-        if ( $currency ) {
-            $discount = wpinv_price( wpinv_format_amount( $discount, NULL, !$currency ), $this->get_currency() );
+        if ($currency) {
+            $discount = wpinv_price(wpinv_format_amount($discount, NULL, !$currency), $this->get_currency());
         }
         
-        $discount   = $dash . $discount;
+        $discount = $dash . $discount;
         
-        return apply_filters( 'wpinv_get_invoice_discount', $discount, $this->ID, $this, $currency, $dash );
+        return apply_filters('wpinv_get_invoice_discount', $discount, $this->ID, $this, $currency, $dash);
     }
     
     public function get_discount_code() {
         return $this->discount_code;
     }
     
-    public function get_tax( $currency = false ) {
-        $tax = wpinv_round_amount( $this->tax );
+    public function get_tax($currency = false) {
+        $tax = wpinv_round_amount($this->tax);
         
-        if ( $currency ) {
-            $tax = wpinv_price( wpinv_format_amount( $tax, NULL, !$currency ), $this->get_currency() );
+        if ($currency) {
+            $tax = wpinv_price(wpinv_format_amount($tax, NULL, !$currency), $this->get_currency());
         }
         
-        return apply_filters( 'wpinv_get_invoice_tax', $tax, $this->ID, $this, $currency );
+        return apply_filters('wpinv_get_invoice_tax', $tax, $this->ID, $this, $currency);
     }
     
-    public function get_fees( $type = 'all' ) {
-        $fees    = array();
+    public function get_fees($type = 'all') {
+        $fees = array();
 
-        if ( ! empty( $this->fees ) && is_array( $this->fees ) ) {
-            foreach ( $this->fees as $fee ) {
-                if( 'all' != $type && ! empty( $fee['type'] ) && $type != $fee['type'] ) {
+        if (!empty($this->fees) && is_array($this->fees)) {
+            foreach ($this->fees as $fee) {
+                if ('all' != $type && !empty($fee['type']) && $type != $fee['type']) {
                     continue;
                 }
 
-                $fee['label'] = stripslashes( $fee['label'] );
-                $fee['amount_display'] = wpinv_price( $fee['amount'], $this->get_currency() );
-                $fees[]    = $fee;
+                $fee['label'] = stripslashes($fee['label']);
+                $fee['amount_display'] = wpinv_price($fee['amount'], $this->get_currency());
+                $fees[] = $fee;
             }
         }
 
-        return apply_filters( 'wpinv_get_invoice_fees', $fees, $this->ID, $this );
+        return apply_filters('wpinv_get_invoice_fees', $fees, $this->ID, $this);
     }
     
-    public function get_fees_total( $type = 'all' ) {
-        $fees_total = (float) 0.00;
+    public function get_fees_total($type = 'all') {
+        $fees_total = (float)0.00;
 
-        $payment_fees = isset( $this->payment_meta['fees'] ) ? $this->payment_meta['fees'] : array();
-        if ( ! empty( $payment_fees ) ) {
-            foreach ( $payment_fees as $fee ) {
-                $fees_total += (float) $fee['amount'];
+        $payment_fees = isset($this->payment_meta['fees']) ? $this->payment_meta['fees'] : array();
+        if (!empty($payment_fees)) {
+            foreach ($payment_fees as $fee) {
+                $fees_total += (float)$fee['amount'];
             }
         }
 
-        return apply_filters( 'wpinv_get_invoice_fees_total', $fees_total, $this->ID, $this );
+        return apply_filters('wpinv_get_invoice_fees_total', $fees_total, $this->ID, $this);
         /*
         $fees = $this->get_fees( $type );
 
@@ -1471,116 +1471,116 @@ 
     }
 
     public function get_user_id() {
-        return apply_filters( 'wpinv_user_id', $this->user_id, $this->ID, $this );
+        return apply_filters('wpinv_user_id', $this->user_id, $this->ID, $this);
     }
     
     public function get_first_name() {
-        return apply_filters( 'wpinv_first_name', $this->first_name, $this->ID, $this );
+        return apply_filters('wpinv_first_name', $this->first_name, $this->ID, $this);
     }
     
     public function get_last_name() {
-        return apply_filters( 'wpinv_last_name', $this->last_name, $this->ID, $this );
+        return apply_filters('wpinv_last_name', $this->last_name, $this->ID, $this);
     }
     
     public function get_user_full_name() {
-        return apply_filters( 'wpinv_user_full_name', $this->full_name, $this->ID, $this );
+        return apply_filters('wpinv_user_full_name', $this->full_name, $this->ID, $this);
     }
     
     public function get_user_info() {
-        return apply_filters( 'wpinv_user_info', $this->user_info, $this->ID, $this );
+        return apply_filters('wpinv_user_info', $this->user_info, $this->ID, $this);
     }
     
     public function get_email() {
-        return apply_filters( 'wpinv_user_email', $this->email, $this->ID, $this );
+        return apply_filters('wpinv_user_email', $this->email, $this->ID, $this);
     }
     
     public function get_address() {
-        return apply_filters( 'wpinv_address', $this->address, $this->ID, $this );
+        return apply_filters('wpinv_address', $this->address, $this->ID, $this);
     }
     
     public function get_phone() {
-        return apply_filters( 'wpinv_phone', $this->phone, $this->ID, $this );
+        return apply_filters('wpinv_phone', $this->phone, $this->ID, $this);
     }
     
     public function get_number() {
-        return apply_filters( 'wpinv_number', $this->number, $this->ID, $this );
+        return apply_filters('wpinv_number', $this->number, $this->ID, $this);
     }
     
     public function get_items() {
-        return apply_filters( 'wpinv_payment_meta_items', $this->items, $this->ID, $this );
+        return apply_filters('wpinv_payment_meta_items', $this->items, $this->ID, $this);
     }
     
     public function get_key() {
-        return apply_filters( 'wpinv_key', $this->key, $this->ID, $this );
+        return apply_filters('wpinv_key', $this->key, $this->ID, $this);
     }
     
     public function get_transaction_id() {
-        return apply_filters( 'wpinv_get_invoice_transaction_id', $this->transaction_id, $this->ID, $this );
+        return apply_filters('wpinv_get_invoice_transaction_id', $this->transaction_id, $this->ID, $this);
     }
     
     public function get_gateway() {
-        return apply_filters( 'wpinv_gateway', $this->gateway, $this->ID, $this );
+        return apply_filters('wpinv_gateway', $this->gateway, $this->ID, $this);
     }
     
     public function get_gateway_title() {
-        $this->gateway_title = !empty( $this->gateway_title ) ? $this->gateway_title : wpinv_get_gateway_checkout_label( $this->gateway );
+        $this->gateway_title = !empty($this->gateway_title) ? $this->gateway_title : wpinv_get_gateway_checkout_label($this->gateway);
         
-        return apply_filters( 'wpinv_gateway_title', $this->gateway_title, $this->ID, $this );
+        return apply_filters('wpinv_gateway_title', $this->gateway_title, $this->ID, $this);
     }
     
     public function get_currency() {
-        return apply_filters( 'wpinv_currency_code', $this->currency, $this->ID, $this );
+        return apply_filters('wpinv_currency_code', $this->currency, $this->ID, $this);
     }
     
     public function get_created_date() {
-        return apply_filters( 'wpinv_created_date', $this->date, $this->ID, $this );
+        return apply_filters('wpinv_created_date', $this->date, $this->ID, $this);
     }
     
-    public function get_due_date( $display = false ) {
-        $due_date = apply_filters( 'wpinv_due_date', $this->due_date, $this->ID, $this );
+    public function get_due_date($display = false) {
+        $due_date = apply_filters('wpinv_due_date', $this->due_date, $this->ID, $this);
         
-        if ( !$display || empty( $due_date ) ) {
+        if (!$display || empty($due_date)) {
             return $due_date;
         }
         
-        return date_i18n( get_option( 'date_format' ), strtotime( $due_date ) );
+        return date_i18n(get_option('date_format'), strtotime($due_date));
     }
     
     public function get_completed_date() {
-        return apply_filters( 'wpinv_completed_date', $this->completed_date, $this->ID, $this );
+        return apply_filters('wpinv_completed_date', $this->completed_date, $this->ID, $this);
     }
     
-    public function get_invoice_date( $formatted = true ) {
+    public function get_invoice_date($formatted = true) {
         $date_completed = $this->completed_date;
         $invoice_date   = $date_completed != '' && $date_completed != '0000-00-00 00:00:00' ? $date_completed : '';
         
-        if ( $invoice_date == '' ) {
+        if ($invoice_date == '') {
             $date_created   = $this->date;
             $invoice_date   = $date_created != '' && $date_created != '0000-00-00 00:00:00' ? $date_created : '';
         }
         
-        if ( $formatted && $invoice_date ) {
-            $invoice_date   = date_i18n( get_option( 'date_format' ), strtotime( $invoice_date ) );
+        if ($formatted && $invoice_date) {
+            $invoice_date = date_i18n(get_option('date_format'), strtotime($invoice_date));
         }
 
-        return apply_filters( 'wpinv_get_invoice_date', $invoice_date, $formatted, $this->ID, $this );
+        return apply_filters('wpinv_get_invoice_date', $invoice_date, $formatted, $this->ID, $this);
     }
     
     public function get_ip() {
-        return apply_filters( 'wpinv_user_ip', $this->ip, $this->ID, $this );
+        return apply_filters('wpinv_user_ip', $this->ip, $this->ID, $this);
     }
         
-    public function has_status( $status ) {
-        return apply_filters( 'wpinv_has_status', ( is_array( $status ) && in_array( $this->get_status(), $status ) ) || $this->get_status() === $status ? true : false, $this, $status );
+    public function has_status($status) {
+        return apply_filters('wpinv_has_status', (is_array($status) && in_array($this->get_status(), $status)) || $this->get_status() === $status ? true : false, $this, $status);
     }
     
-    public function add_item( $item_id = 0, $args = array() ) {
+    public function add_item($item_id = 0, $args = array()) {
         global $wpi_current_id, $wpi_item_id;
         
-        $item = new WPInv_Item( $item_id );
+        $item = new WPInv_Item($item_id);
 
         // Bail if this post isn't a item
-        if( !$item || $item->post_type !== 'wpi_item' ) {
+        if (!$item || $item->post_type !== 'wpi_item') {
             return false;
         }
         
@@ -1599,8 +1599,8 @@ 
             'fees'          => array()
         );
 
-        $args = wp_parse_args( apply_filters( 'wpinv_add_item_args', $args, $item->ID ), $defaults );
-        $args['quantity']   = $has_quantities && $args['quantity'] > 0 ? absint( $args['quantity'] ) : 1;
+        $args = wp_parse_args(apply_filters('wpinv_add_item_args', $args, $item->ID), $defaults);
+        $args['quantity'] = $has_quantities && $args['quantity'] > 0 ? absint($args['quantity']) : 1;
 
         $wpi_current_id         = $this->ID;
         $wpi_item_id            = $item->ID;
@@ -1612,19 +1612,19 @@ 
         $found_cart_key         = false;
         
         if ($has_quantities) {
-            $this->cart_details = !empty( $this->cart_details ) ? array_values( $this->cart_details ) : $this->cart_details;
+            $this->cart_details = !empty($this->cart_details) ? array_values($this->cart_details) : $this->cart_details;
             
-            foreach ( $this->items as $key => $cart_item ) {
-                if ( (int)$item_id !== (int)$cart_item['id'] ) {
+            foreach ($this->items as $key => $cart_item) {
+                if ((int)$item_id !== (int)$cart_item['id']) {
                     continue;
                 }
 
-                $this->items[ $key ]['quantity'] += $args['quantity'];
+                $this->items[$key]['quantity'] += $args['quantity'];
                 break;
             }
             
-            foreach ( $this->cart_details as $cart_key => $cart_item ) {
-                if ( $item_id != $cart_item['id'] ) {
+            foreach ($this->cart_details as $cart_key => $cart_item) {
+                if ($item_id != $cart_item['id']) {
                     continue;
                 }
 
@@ -1636,29 +1636,29 @@ 
         if ($has_quantities && $found_cart_key !== false) {
             $cart_item          = $this->cart_details[$found_cart_key];
             $item_price         = $cart_item['item_price'];
-            $quantity           = !empty( $cart_item['quantity'] ) ? $cart_item['quantity'] : 1;
-            $tax_rate           = !empty( $cart_item['vat_rate'] ) ? $cart_item['vat_rate'] : 0;
+            $quantity           = !empty($cart_item['quantity']) ? $cart_item['quantity'] : 1;
+            $tax_rate           = !empty($cart_item['vat_rate']) ? $cart_item['vat_rate'] : 0;
             
             $new_quantity       = $quantity + $args['quantity'];
             $subtotal           = $item_price * $new_quantity;
             
             $args['quantity']   = $new_quantity;
-            $discount           = !empty( $args['discount'] ) ? $args['discount'] : 0;
-            $tax                = $subtotal > 0 && $tax_rate > 0 ? ( ( $subtotal - $discount ) * 0.01 * (float)$tax_rate ) : 0;
+            $discount           = !empty($args['discount']) ? $args['discount'] : 0;
+            $tax                = $subtotal > 0 && $tax_rate > 0 ? (($subtotal - $discount) * 0.01 * (float)$tax_rate) : 0;
             
             $discount_increased = $discount > 0 && $subtotal > 0 && $discount > (float)$cart_item['discount'] ? $discount - (float)$cart_item['discount'] : 0;
             $tax_increased      = $tax > 0 && $subtotal > 0 && $tax > (float)$cart_item['tax'] ? $tax - (float)$cart_item['tax'] : 0;
             // The total increase equals the number removed * the item_price
-            $total_increased    = wpinv_round_amount( $item_price );
+            $total_increased    = wpinv_round_amount($item_price);
             
-            if ( wpinv_prices_include_tax() ) {
-                $subtotal -= wpinv_round_amount( $tax );
+            if (wpinv_prices_include_tax()) {
+                $subtotal -= wpinv_round_amount($tax);
             }
 
-            $total              = $subtotal - $discount + $tax;
+            $total = $subtotal - $discount + $tax;
 
             // Do not allow totals to go negative
-            if( $total < 0 ) {
+            if ($total < 0) {
                 $total = 0;
             }
             
@@ -1674,25 +1674,25 @@ 
             $this->cart_details[$found_cart_key] = $cart_item;
         } else {
             // Set custom price.
-            if ( $args['custom_price'] !== '' ) {
+            if ($args['custom_price'] !== '') {
                 $item_price = $args['custom_price'];
             } else {
                 // Allow overriding the price
-                if ( false !== $args['item_price'] ) {
+                if (false !== $args['item_price']) {
                     $item_price = $args['item_price'];
                 } else {
-                    $item_price = wpinv_get_item_price( $item->ID );
+                    $item_price = wpinv_get_item_price($item->ID);
                 }
             }
 
             // Sanitizing the price here so we don't have a dozen calls later
-            $item_price = wpinv_sanitize_amount( $item_price );
-            $subtotal   = wpinv_round_amount( $item_price * $args['quantity'] );
+            $item_price = wpinv_sanitize_amount($item_price);
+            $subtotal   = wpinv_round_amount($item_price * $args['quantity']);
         
-            $discount   = !empty( $args['discount'] ) ? $args['discount'] : 0;
-            $tax_class  = !empty( $args['vat_class'] ) ? $args['vat_class'] : '';
-            $tax_rate   = !empty( $args['vat_rate'] ) ? $args['vat_rate'] : 0;
-            $tax        = $subtotal > 0 && $tax_rate > 0 ? ( ( $subtotal - $discount ) * 0.01 * (float)$tax_rate ) : 0;
+            $discount   = !empty($args['discount']) ? $args['discount'] : 0;
+            $tax_class  = !empty($args['vat_class']) ? $args['vat_class'] : '';
+            $tax_rate   = !empty($args['vat_rate']) ? $args['vat_rate'] : 0;
+            $tax        = $subtotal > 0 && $tax_rate > 0 ? (($subtotal - $discount) * 0.01 * (float)$tax_rate) : 0;
 
             // Setup the items meta item
             $new_item = array(
@@ -1700,29 +1700,29 @@ 
                 'quantity' => $args['quantity'],
             );
 
-            $this->items[]  = $new_item;
+            $this->items[] = $new_item;
 
-            if ( wpinv_prices_include_tax() ) {
-                $subtotal -= wpinv_round_amount( $tax );
+            if (wpinv_prices_include_tax()) {
+                $subtotal -= wpinv_round_amount($tax);
             }
 
-            $total      = $subtotal - $discount + $tax;
+            $total = $subtotal - $discount + $tax;
 
             // Do not allow totals to go negative
-            if( $total < 0 ) {
+            if ($total < 0) {
                 $total = 0;
             }
         
             $this->cart_details[] = array(
                 'name'          => !empty($args['name']) ? $args['name'] : $item->get_name(),
                 'id'            => $item->ID,
-                'item_price'    => wpinv_round_amount( $item_price ),
-                'custom_price'  => ( $args['custom_price'] !== '' ? wpinv_round_amount( $args['custom_price'] ) : '' ),
+                'item_price'    => wpinv_round_amount($item_price),
+                'custom_price'  => ($args['custom_price'] !== '' ? wpinv_round_amount($args['custom_price']) : ''),
                 'quantity'      => $args['quantity'],
                 'discount'      => $discount,
-                'subtotal'      => wpinv_round_amount( $subtotal ),
-                'tax'           => wpinv_round_amount( $tax ),
-                'price'         => wpinv_round_amount( $total ),
+                'subtotal'      => wpinv_round_amount($subtotal),
+                'tax'           => wpinv_round_amount($tax),
+                'price'         => wpinv_round_amount($total),
                 'vat_rate'      => $tax_rate,
                 'vat_class'     => $tax_class,
                 'meta'          => $args['meta'],
@@ -1732,18 +1732,18 @@ 
             $subtotal = $subtotal - $discount;
         }
         
-        $added_item = end( $this->cart_details );
-        $added_item['action']  = 'add';
+        $added_item = end($this->cart_details);
+        $added_item['action'] = 'add';
         
         $this->pending['items'][] = $added_item;
         
-        $this->increase_subtotal( $subtotal );
-        $this->increase_tax( $tax );
+        $this->increase_subtotal($subtotal);
+        $this->increase_tax($tax);
 
         return true;
     }
     
-    public function remove_item( $item_id, $args = array() ) {
+    public function remove_item($item_id, $args = array()) {
         // Set some defaults
         $defaults = array(
             'quantity'      => 1,
@@ -1751,51 +1751,51 @@ 
             'custom_price'  => '',
             'cart_index'    => false,
         );
-        $args = wp_parse_args( $args, $defaults );
+        $args = wp_parse_args($args, $defaults);
 
         // Bail if this post isn't a item
-        if ( get_post_type( $item_id ) !== 'wpi_item' ) {
+        if (get_post_type($item_id) !== 'wpi_item') {
             return false;
         }
         
-        $this->cart_details = !empty( $this->cart_details ) ? array_values( $this->cart_details ) : $this->cart_details;
+        $this->cart_details = !empty($this->cart_details) ? array_values($this->cart_details) : $this->cart_details;
 
-        foreach ( $this->items as $key => $item ) {
-            if ( !empty($item['id']) && (int)$item_id !== (int)$item['id'] ) {
+        foreach ($this->items as $key => $item) {
+            if (!empty($item['id']) && (int)$item_id !== (int)$item['id']) {
                 continue;
             }
 
-            if ( false !== $args['cart_index'] ) {
-                $cart_index = absint( $args['cart_index'] );
-                $cart_item  = ! empty( $this->cart_details[ $cart_index ] ) ? $this->cart_details[ $cart_index ] : false;
+            if (false !== $args['cart_index']) {
+                $cart_index = absint($args['cart_index']);
+                $cart_item  = !empty($this->cart_details[$cart_index]) ? $this->cart_details[$cart_index] : false;
 
-                if ( ! empty( $cart_item ) ) {
+                if (!empty($cart_item)) {
                     // If the cart index item isn't the same item ID, don't remove it
-                    if ( !empty($cart_item['id']) && $cart_item['id'] != $item['id'] ) {
+                    if (!empty($cart_item['id']) && $cart_item['id'] != $item['id']) {
                         continue;
                     }
                 }
             }
 
-            $item_quantity = $this->items[ $key ]['quantity'];
-            if ( $item_quantity > $args['quantity'] ) {
-                $this->items[ $key ]['quantity'] -= $args['quantity'];
+            $item_quantity = $this->items[$key]['quantity'];
+            if ($item_quantity > $args['quantity']) {
+                $this->items[$key]['quantity'] -= $args['quantity'];
                 break;
             } else {
-                unset( $this->items[ $key ] );
+                unset($this->items[$key]);
                 break;
             }
         }
 
         $found_cart_key = false;
-        if ( false === $args['cart_index'] ) {
-            foreach ( $this->cart_details as $cart_key => $item ) {
-                if ( $item_id != $item['id'] ) {
+        if (false === $args['cart_index']) {
+            foreach ($this->cart_details as $cart_key => $item) {
+                if ($item_id != $item['id']) {
                     continue;
                 }
 
-                if ( false !== $args['item_price'] ) {
-                    if ( isset( $item['item_price'] ) && (float) $args['item_price'] != (float) $item['item_price'] ) {
+                if (false !== $args['item_price']) {
+                    if (isset($item['item_price']) && (float)$args['item_price'] != (float)$item['item_price']) {
                         continue;
                     }
                 }
@@ -1804,13 +1804,13 @@ 
                 break;
             }
         } else {
-            $cart_index = absint( $args['cart_index'] );
+            $cart_index = absint($args['cart_index']);
 
-            if ( ! array_key_exists( $cart_index, $this->cart_details ) ) {
+            if (!array_key_exists($cart_index, $this->cart_details)) {
                 return false; // Invalid cart index passed.
             }
 
-            if ( (int) $this->cart_details[ $cart_index ]['id'] > 0 && (int) $this->cart_details[ $cart_index ]['id'] !== (int) $item_id ) {
+            if ((int)$this->cart_details[$cart_index]['id'] > 0 && (int)$this->cart_details[$cart_index]['id'] !== (int)$item_id) {
                 return false; // We still need the proper Item ID to be sure.
             }
 
@@ -1818,41 +1818,41 @@ 
         }
         
         $cart_item  = $this->cart_details[$found_cart_key];
-        $quantity   = !empty( $cart_item['quantity'] ) ? $cart_item['quantity'] : 1;
+        $quantity   = !empty($cart_item['quantity']) ? $cart_item['quantity'] : 1;
         
-        if ( count( $this->cart_details ) == 1 && ( $quantity - $args['quantity'] ) < 1 ) {
+        if (count($this->cart_details) == 1 && ($quantity - $args['quantity']) < 1) {
             return false; // Invoice must contain at least one item.
         }
         
-        $discounts  = $this->get_discounts();
+        $discounts = $this->get_discounts();
         
-        if ( $quantity > $args['quantity'] ) {
+        if ($quantity > $args['quantity']) {
             $item_price         = $cart_item['item_price'];
-            $tax_rate           = !empty( $cart_item['vat_rate'] ) ? $cart_item['vat_rate'] : 0;
+            $tax_rate           = !empty($cart_item['vat_rate']) ? $cart_item['vat_rate'] : 0;
             
-            $new_quantity       = max( $quantity - $args['quantity'], 1);
+            $new_quantity       = max($quantity - $args['quantity'], 1);
             $subtotal           = $item_price * $new_quantity;
             
             $args['quantity']   = $new_quantity;
-            $discount           = !empty( $cart_item['discount'] ) ? $cart_item['discount'] : 0;
-            $tax                = $subtotal > 0 && $tax_rate > 0 ? ( ( $subtotal - $discount ) * 0.01 * (float)$tax_rate ) : 0;
+            $discount           = !empty($cart_item['discount']) ? $cart_item['discount'] : 0;
+            $tax                = $subtotal > 0 && $tax_rate > 0 ? (($subtotal - $discount) * 0.01 * (float)$tax_rate) : 0;
             
-            $discount_decrease  = (float)$cart_item['discount'] > 0 && $quantity > 0 ? wpinv_round_amount( ( (float)$cart_item['discount'] / $quantity ) ) : 0;
+            $discount_decrease  = (float)$cart_item['discount'] > 0 && $quantity > 0 ? wpinv_round_amount(((float)$cart_item['discount'] / $quantity)) : 0;
             $discount_decrease  = $discount > 0 && $subtotal > 0 && (float)$cart_item['discount'] > $discount ? (float)$cart_item['discount'] - $discount : $discount_decrease; 
-            $tax_decrease       = (float)$cart_item['tax'] > 0 && $quantity > 0 ? wpinv_round_amount( ( (float)$cart_item['tax'] / $quantity ) ) : 0;
+            $tax_decrease       = (float)$cart_item['tax'] > 0 && $quantity > 0 ? wpinv_round_amount(((float)$cart_item['tax'] / $quantity)) : 0;
             $tax_decrease       = $tax > 0 && $subtotal > 0 && (float)$cart_item['tax'] > $tax ? (float)$cart_item['tax'] - $tax : $tax_decrease;
             
             // The total increase equals the number removed * the item_price
-            $total_decrease     = wpinv_round_amount( $item_price );
+            $total_decrease     = wpinv_round_amount($item_price);
             
-            if ( wpinv_prices_include_tax() ) {
-                $subtotal -= wpinv_round_amount( $tax );
+            if (wpinv_prices_include_tax()) {
+                $subtotal -= wpinv_round_amount($tax);
             }
 
-            $total              = $subtotal - $discount + $tax;
+            $total = $subtotal - $discount + $tax;
 
             // Do not allow totals to go negative
-            if( $total < 0 ) {
+            if ($total < 0) {
                 $total = 0;
             }
             
@@ -1871,16 +1871,16 @@ 
             
             $this->cart_details[$found_cart_key] = $cart_item;
             
-            $remove_item = end( $this->cart_details );
+            $remove_item = end($this->cart_details);
         } else {
             $item_price     = $cart_item['item_price'];
-            $discount       = !empty( $cart_item['discount'] ) ? $cart_item['discount'] : 0;
-            $tax            = !empty( $cart_item['tax'] ) ? $cart_item['tax'] : 0;
+            $discount       = !empty($cart_item['discount']) ? $cart_item['discount'] : 0;
+            $tax            = !empty($cart_item['tax']) ? $cart_item['tax'] : 0;
         
-            $subtotal_decrease  = ( $item_price * $quantity ) - $discount;
+            $subtotal_decrease  = ($item_price * $quantity) - $discount;
             $tax_decrease       = $tax;
 
-            unset( $this->cart_details[$found_cart_key] );
+            unset($this->cart_details[$found_cart_key]);
             
             $remove_item             = $args;
             $remove_item['id']       = $item_id;
@@ -1891,8 +1891,8 @@ 
         $remove_item['action']      = 'remove';
         $this->pending['items'][]   = $remove_item;
                
-        $this->decrease_subtotal( $subtotal_decrease );
-        $this->decrease_tax( $tax_decrease );
+        $this->decrease_subtotal($subtotal_decrease);
+        $this->decrease_tax($tax_decrease);
         
         return true;
     }
@@ -1900,7 +1900,7 @@ 
     public function update_items($temp = false) {
         global $wpinv_euvat, $wpi_current_id, $wpi_item_id, $wpi_nosave;
         
-        if ( !empty( $this->cart_details ) ) {
+        if (!empty($this->cart_details)) {
             $wpi_nosave             = $temp;
             $cart_subtotal          = 0;
             $cart_discount          = 0;
@@ -1910,42 +1910,42 @@ 
             $_POST['wpinv_country'] = $this->country;
             $_POST['wpinv_state']   = $this->state;
             
-            foreach ( $this->cart_details as $key => $item ) {
+            foreach ($this->cart_details as $key => $item) {
                 $item_price = $item['item_price'];
-                $quantity   = wpinv_item_quantities_enabled() && $item['quantity'] > 0 ? absint( $item['quantity'] ) : 1;
-                $amount     = wpinv_round_amount( $item_price * $quantity );
+                $quantity   = wpinv_item_quantities_enabled() && $item['quantity'] > 0 ? absint($item['quantity']) : 1;
+                $amount     = wpinv_round_amount($item_price * $quantity);
                 $subtotal   = $item_price * $quantity;
                 
                 $wpi_current_id         = $this->ID;
                 $wpi_item_id            = $item['id'];
                 
-                $discount   = wpinv_get_cart_item_discount_amount( $item, $this->get_discounts() );
+                $discount   = wpinv_get_cart_item_discount_amount($item, $this->get_discounts());
                 
-                $tax_rate   = wpinv_get_tax_rate( $this->country, $this->state, $wpi_item_id );
-                $tax_class  = $wpinv_euvat->get_item_class( $wpi_item_id );
-                $tax        = $item_price > 0 ? ( ( $subtotal - $discount ) * 0.01 * (float)$tax_rate ) : 0;
+                $tax_rate   = wpinv_get_tax_rate($this->country, $this->state, $wpi_item_id);
+                $tax_class  = $wpinv_euvat->get_item_class($wpi_item_id);
+                $tax        = $item_price > 0 ? (($subtotal - $discount) * 0.01 * (float)$tax_rate) : 0;
 
-                if ( wpinv_prices_include_tax() ) {
-                    $subtotal -= wpinv_round_amount( $tax );
+                if (wpinv_prices_include_tax()) {
+                    $subtotal -= wpinv_round_amount($tax);
                 }
 
-                $total      = $subtotal - $discount + $tax;
+                $total = $subtotal - $discount + $tax;
 
                 // Do not allow totals to go negative
-                if( $total < 0 ) {
+                if ($total < 0) {
                     $total = 0;
                 }
 
                 $cart_details[] = array(
                     'id'          => $item['id'],
                     'name'        => $item['name'],
-                    'item_price'  => wpinv_round_amount( $item_price ),
-                    'custom_price'=> ( isset( $item['custom_price'] ) ? $item['custom_price'] : '' ),
+                    'item_price'  => wpinv_round_amount($item_price),
+                    'custom_price'=> (isset($item['custom_price']) ? $item['custom_price'] : ''),
                     'quantity'    => $quantity,
                     'discount'    => $discount,
-                    'subtotal'    => wpinv_round_amount( $subtotal ),
-                    'tax'         => wpinv_round_amount( $tax ),
-                    'price'       => wpinv_round_amount( $total ),
+                    'subtotal'    => wpinv_round_amount($subtotal),
+                    'tax'         => wpinv_round_amount($tax),
+                    'price'       => wpinv_round_amount($total),
                     'vat_rate'    => $tax_rate,
                     'vat_class'   => $tax_class,
                     'meta'        => isset($item['meta']) ? $item['meta'] : array(),
@@ -1956,9 +1956,9 @@ 
                 $cart_discount  += (float)($discount);
                 $cart_tax       += (float)($tax);
             }
-            $this->subtotal = wpinv_round_amount( $cart_subtotal );
-            $this->tax      = wpinv_round_amount( $cart_tax );
-            $this->discount = wpinv_round_amount( $cart_discount );
+            $this->subtotal = wpinv_round_amount($cart_subtotal);
+            $this->tax      = wpinv_round_amount($cart_tax);
+            $this->discount = wpinv_round_amount($cart_discount);
             
             $this->recalculate_total();
             
@@ -1970,221 +1970,221 @@ 
     
     public function recalculate_totals($temp = false) {        
         $this->update_items($temp);
-        $this->save( true );
+        $this->save(true);
         
         return $this;
     }
     
     public function needs_payment() {
-        $valid_invoice_statuses = apply_filters( 'wpinv_valid_invoice_statuses_for_payment', array( 'wpi-pending' ), $this );
+        $valid_invoice_statuses = apply_filters('wpinv_valid_invoice_statuses_for_payment', array('wpi-pending'), $this);
 
-        if ( $this->has_status( $valid_invoice_statuses ) && ( $this->get_total() > 0 || $this->is_free_trial() || $this->is_free() ) ) {
+        if ($this->has_status($valid_invoice_statuses) && ($this->get_total() > 0 || $this->is_free_trial() || $this->is_free())) {
             $needs_payment = true;
         } else {
             $needs_payment = false;
         }
 
-        return apply_filters( 'wpinv_needs_payment', $needs_payment, $this, $valid_invoice_statuses );
+        return apply_filters('wpinv_needs_payment', $needs_payment, $this, $valid_invoice_statuses);
     }
     
-    public function get_checkout_payment_url( $with_key = false, $secret = false ) {
+    public function get_checkout_payment_url($with_key = false, $secret = false) {
         $pay_url = wpinv_get_checkout_uri();
 
-        if ( is_ssl() ) {
-            $pay_url = str_replace( 'http:', 'https:', $pay_url );
+        if (is_ssl()) {
+            $pay_url = str_replace('http:', 'https:', $pay_url);
         }
         
         $key = $this->get_key();
 
-        if ( $with_key ) {
-            $pay_url = add_query_arg( 'invoice_key', $key, $pay_url );
+        if ($with_key) {
+            $pay_url = add_query_arg('invoice_key', $key, $pay_url);
         } else {
-            $pay_url = add_query_arg( array( 'wpi_action' => 'pay_for_invoice', 'invoice_key' => $key ), $pay_url );
+            $pay_url = add_query_arg(array('wpi_action' => 'pay_for_invoice', 'invoice_key' => $key), $pay_url);
         }
         
-        if ( $secret ) {
-            $pay_url = add_query_arg( array( '_wpipay' => md5( $this->get_user_id() . '::' . $this->get_email() . '::' . $key ) ), $pay_url );
+        if ($secret) {
+            $pay_url = add_query_arg(array('_wpipay' => md5($this->get_user_id() . '::' . $this->get_email() . '::' . $key)), $pay_url);
         }
 
-        return apply_filters( 'wpinv_get_checkout_payment_url', $pay_url, $this, $with_key, $secret );
+        return apply_filters('wpinv_get_checkout_payment_url', $pay_url, $this, $with_key, $secret);
     }
     
-    public function get_view_url( $with_key = false ) {
-        $invoice_url = get_permalink( $this->ID );
+    public function get_view_url($with_key = false) {
+        $invoice_url = get_permalink($this->ID);
 
-        if ( $with_key ) {
-            $invoice_url = add_query_arg( 'invoice_key', $this->get_key(), $invoice_url );
+        if ($with_key) {
+            $invoice_url = add_query_arg('invoice_key', $this->get_key(), $invoice_url);
         }
 
-        return apply_filters( 'wpinv_get_view_url', $invoice_url, $this, $with_key );
+        return apply_filters('wpinv_get_view_url', $invoice_url, $this, $with_key);
     }
     
-    public function generate_key( $string = '' ) {
-        $auth_key  = defined( 'AUTH_KEY' ) ? AUTH_KEY : '';
-        return strtolower( md5( $string . date( 'Y-m-d H:i:s' ) . $auth_key . uniqid( 'wpinv', true ) ) );  // Unique key
+    public function generate_key($string = '') {
+        $auth_key = defined('AUTH_KEY') ? AUTH_KEY : '';
+        return strtolower(md5($string . date('Y-m-d H:i:s') . $auth_key . uniqid('wpinv', true))); // Unique key
     }
     
     public function is_recurring() {
-        if ( empty( $this->cart_details ) ) {
+        if (empty($this->cart_details)) {
             return false;
         }
         
         $has_subscription = false;
-        foreach( $this->cart_details as $cart_item ) {
-            if ( !empty( $cart_item['id'] ) && wpinv_is_recurring_item( $cart_item['id'] )  ) {
+        foreach ($this->cart_details as $cart_item) {
+            if (!empty($cart_item['id']) && wpinv_is_recurring_item($cart_item['id'])) {
                 $has_subscription = true;
                 break;
             }
         }
         
-        if ( count( $this->cart_details ) > 1 ) {
+        if (count($this->cart_details) > 1) {
             $has_subscription = false;
         }
 
-        return apply_filters( 'wpinv_invoice_has_recurring_item', $has_subscription, $this->cart_details );
+        return apply_filters('wpinv_invoice_has_recurring_item', $has_subscription, $this->cart_details);
     }
     
     public function is_free_trial() {
         $is_free_trial = false;
         
-        if ( $this->is_parent() && $item = $this->get_recurring( true ) ) {
-            if ( !empty( $item ) && $item->has_free_trial() ) {
+        if ($this->is_parent() && $item = $this->get_recurring(true)) {
+            if (!empty($item) && $item->has_free_trial()) {
                 $is_free_trial = true;
             }
         }
 
-        return apply_filters( 'wpinv_invoice_is_free_trial', $is_free_trial, $this->cart_details );
+        return apply_filters('wpinv_invoice_is_free_trial', $is_free_trial, $this->cart_details);
     }
     
-    public function get_recurring( $object = false ) {
+    public function get_recurring($object = false) {
         $item = NULL;
         
-        if ( empty( $this->cart_details ) ) {
+        if (empty($this->cart_details)) {
             return $item;
         }
         
-        foreach( $this->cart_details as $cart_item ) {
-            if ( !empty( $cart_item['id'] ) && wpinv_is_recurring_item( $cart_item['id'] )  ) {
+        foreach ($this->cart_details as $cart_item) {
+            if (!empty($cart_item['id']) && wpinv_is_recurring_item($cart_item['id'])) {
                 $item = $cart_item['id'];
                 break;
             }
         }
         
-        if ( $object ) {
-            $item = $item ? new WPInv_Item( $item ) : NULL;
+        if ($object) {
+            $item = $item ? new WPInv_Item($item) : NULL;
             
-            apply_filters( 'wpinv_invoice_get_recurring_item', $item, $this );
+            apply_filters('wpinv_invoice_get_recurring_item', $item, $this);
         }
 
-        return apply_filters( 'wpinv_invoice_get_recurring_item_id', $item, $this );
+        return apply_filters('wpinv_invoice_get_recurring_item_id', $item, $this);
     }
     
     public function get_subscription_name() {
-        $item = $this->get_recurring( true );
+        $item = $this->get_recurring(true);
         
-        if ( empty( $item ) ) {
+        if (empty($item)) {
             return NULL;
         }
         
-        if ( !($name = $item->get_name()) ) {
+        if (!($name = $item->get_name())) {
             $name = $item->post_name;
         }
 
-        return apply_filters( 'wpinv_invoice_get_subscription_name', $name, $this );
+        return apply_filters('wpinv_invoice_get_subscription_name', $name, $this);
     }
         
     public function get_expiration() {
-        $expiration = $this->get_meta( '_wpinv_subscr_expiration', true );
+        $expiration = $this->get_meta('_wpinv_subscr_expiration', true);
         return $expiration;
     }
     
-    public function get_cancelled_date( $formatted = true ) {
-        $cancelled_date = $this->get_subscription_status() == 'cancelled' ? $this->get_meta( '_wpinv_subscr_cancelled_on', true ) : '';
+    public function get_cancelled_date($formatted = true) {
+        $cancelled_date = $this->get_subscription_status() == 'cancelled' ? $this->get_meta('_wpinv_subscr_cancelled_on', true) : '';
         
-        if ( $formatted && $cancelled_date ) {
-            $cancelled_date = date_i18n( get_option( 'date_format' ), strtotime( $cancelled_date ) );
+        if ($formatted && $cancelled_date) {
+            $cancelled_date = date_i18n(get_option('date_format'), strtotime($cancelled_date));
         }
         
         return $cancelled_date;
     }
     
-    public function get_trial_end_date( $formatted = true ) {
-        if ( !$this->is_free_trial() || !$this->is_paid() ) {
+    public function get_trial_end_date($formatted = true) {
+        if (!$this->is_free_trial() || !$this->is_paid()) {
             return NULL;
         }
         
-        $trial_end_date = $this->get_subscription_status() == 'trialing' ? $this->get_meta( '_wpinv_subscr_trial_end', true ) : '';
+        $trial_end_date = $this->get_subscription_status() == 'trialing' ? $this->get_meta('_wpinv_subscr_trial_end', true) : '';
         
-        if ( empty( $trial_end_date ) ) {
-            $trial_start_time = strtotime( $this->get_subscription_start() );
-            $trial_start_time += ( wpinv_period_in_days( $this->get_subscription_trial_interval(), $this->get_subscription_trial_period() ) * DAY_IN_SECONDS ) ;
+        if (empty($trial_end_date)) {
+            $trial_start_time = strtotime($this->get_subscription_start());
+            $trial_start_time += (wpinv_period_in_days($this->get_subscription_trial_interval(), $this->get_subscription_trial_period()) * DAY_IN_SECONDS);
             
-            $trial_end_date = date_i18n( 'Y-m-d H:i:s', $trial_start_time );
+            $trial_end_date = date_i18n('Y-m-d H:i:s', $trial_start_time);
         }
         
-        if ( $formatted && $trial_end_date ) {
-            $trial_end_date = date_i18n( get_option( 'date_format' ), strtotime( $trial_end_date ) );
+        if ($formatted && $trial_end_date) {
+            $trial_end_date = date_i18n(get_option('date_format'), strtotime($trial_end_date));
         }
         
         return $trial_end_date;
     }
     
-    public function get_subscription_created( $default = true ) {
-        $created = $this->get_meta( '_wpinv_subscr_created', true );
+    public function get_subscription_created($default = true) {
+        $created = $this->get_meta('_wpinv_subscr_created', true);
         
-        if ( empty( $created ) && $default ) {
+        if (empty($created) && $default) {
             $created = $this->date;
         }
         return $created;
     }
     
-    public function get_subscription_start( $formatted = true ) {
-        if ( !$this->is_paid() ) {
+    public function get_subscription_start($formatted = true) {
+        if (!$this->is_paid()) {
             return '-';
         }
-        $start   = $this->get_subscription_created();
+        $start = $this->get_subscription_created();
         
-        if ( $formatted ) {
-            $date = date_i18n( get_option( 'date_format' ), strtotime( $start ) );
+        if ($formatted) {
+            $date = date_i18n(get_option('date_format'), strtotime($start));
         } else {
-            $date = date_i18n( 'Y-m-d H:i:s', strtotime( $start ) );
+            $date = date_i18n('Y-m-d H:i:s', strtotime($start));
         }
 
         return $date;
     }
     
-    public function get_subscription_end( $formatted = true ) {
-        if ( !$this->is_paid() ) {
+    public function get_subscription_end($formatted = true) {
+        if (!$this->is_paid()) {
             return '-';
         }
         $start          = $this->get_subscription_created();
         $interval       = $this->get_subscription_interval();
-        $period         = $this->get_subscription_period( true );
+        $period         = $this->get_subscription_period(true);
         $bill_times     = (int)$this->get_bill_times();
         
-        if ( $bill_times == 0 ) {
-            return $formatted ? __( 'Until cancelled', 'invoicing' ) : $bill_times;
+        if ($bill_times == 0) {
+            return $formatted ? __('Until cancelled', 'invoicing') : $bill_times;
         }
         
-        $total_period = $start . '+' . ( $interval * $bill_times ) . ' ' . $period;
+        $total_period = $start . '+' . ($interval * $bill_times) . ' ' . $period;
         
-        $end_time = strtotime( $start . '+' . ( $interval * $bill_times ) . ' ' . $period );
+        $end_time = strtotime($start . '+' . ($interval * $bill_times) . ' ' . $period);
         
-        if ( $this->is_free_trial() ) {
-            $end_time += ( wpinv_period_in_days( $this->get_subscription_trial_interval(), $this->get_subscription_trial_period() ) * DAY_IN_SECONDS ) ;
+        if ($this->is_free_trial()) {
+            $end_time += (wpinv_period_in_days($this->get_subscription_trial_interval(), $this->get_subscription_trial_period()) * DAY_IN_SECONDS);
         }
         
-        if ( $formatted ) {
-            $date = date_i18n( get_option( 'date_format' ), $end_time );
+        if ($formatted) {
+            $date = date_i18n(get_option('date_format'), $end_time);
         } else {
-            $date = date_i18n( 'Y-m-d H:i:s', $end_time );
+            $date = date_i18n('Y-m-d H:i:s', $end_time);
         }
 
         return $date;
     }
     
     public function get_expiration_time() {
-        return strtotime( $this->get_expiration(), current_time( 'timestamp' ) );
+        return strtotime($this->get_expiration(), current_time('timestamp'));
     }
     
     public function get_original_invoice_id() {        
@@ -2196,125 +2196,125 @@ 
         return $subscription_data['bill_times'];
     }
 
-    public function get_child_payments( $self = false ) {
-        $invoices = get_posts( array(
+    public function get_child_payments($self = false) {
+        $invoices = get_posts(array(
             'post_type'         => $this->post_type,
             'post_parent'       => (int)$this->ID,
             'posts_per_page'    => '999',
-            'post_status'       => array( 'publish', 'wpi-processing', 'wpi-renewal' ),
+            'post_status'       => array('publish', 'wpi-processing', 'wpi-renewal'),
             'orderby'           => 'ID',
             'order'             => 'DESC',
             'fields'            => 'ids'
-        ) );
+        ));
         
-        if ( $this->is_free_trial() ) {
+        if ($this->is_free_trial()) {
             $self = false;
         }
         
-        if ( $self && $this->is_paid() ) {
-            if ( !empty( $invoices ) ) {
+        if ($self && $this->is_paid()) {
+            if (!empty($invoices)) {
                 $invoices[] = (int)$this->ID;
             } else {
-                $invoices = array( $this->ID );
+                $invoices = array($this->ID);
             }
             
-            $invoices = array_unique( $invoices );
+            $invoices = array_unique($invoices);
         }
 
         return $invoices;
     }
 
-    public function get_total_payments( $self = true ) {
-        return count( $this->get_child_payments( $self ) );
+    public function get_total_payments($self = true) {
+        return count($this->get_child_payments($self));
     }
     
-    public function get_subscriptions( $limit = -1 ) {
-        $subscriptions = wpinv_get_subscriptions( array( 'parent_invoice_id' => $this->ID, 'numberposts' => $limit ) );
+    public function get_subscriptions($limit = -1) {
+        $subscriptions = wpinv_get_subscriptions(array('parent_invoice_id' => $this->ID, 'numberposts' => $limit));
 
         return $subscriptions;
     }
     
     public function get_subscription_id() {
-        $subscription_id = $this->get_meta( '_wpinv_subscr_profile_id', true );
+        $subscription_id = $this->get_meta('_wpinv_subscr_profile_id', true);
         
-        if ( empty( $subscription_id ) && !empty( $this->parent_invoice ) ) {
-            $parent_invoice = wpinv_get_invoice( $this->parent_invoice );
+        if (empty($subscription_id) && !empty($this->parent_invoice)) {
+            $parent_invoice = wpinv_get_invoice($this->parent_invoice);
             
-            $subscription_id = $parent_invoice->get_meta( '_wpinv_subscr_profile_id', true );
+            $subscription_id = $parent_invoice->get_meta('_wpinv_subscr_profile_id', true);
         }
         
         return $subscription_id;
     }
     
     public function get_subscription_status() {
-        $subscription_status = $this->get_meta( '_wpinv_subscr_status', true );
+        $subscription_status = $this->get_meta('_wpinv_subscr_status', true);
 
-        if ( empty( $subscription_status ) ) {
+        if (empty($subscription_status)) {
             $status = 'pending';
             
-            if ( $this->is_paid() ) {        
+            if ($this->is_paid()) {        
                 $bill_times   = (int)$this->get_bill_times();
                 $times_billed = (int)$this->get_total_payments();
-                $expiration = $this->get_subscription_end( false );
-                $expired = $bill_times != 0 && $expiration != '' && $expiration != '-' && strtotime( date_i18n( 'Y-m-d', strtotime( $expiration ) ) ) < strtotime( date_i18n( 'Y-m-d', current_time( 'timestamp' ) ) ) ? true : false;
+                $expiration = $this->get_subscription_end(false);
+                $expired = $bill_times != 0 && $expiration != '' && $expiration != '-' && strtotime(date_i18n('Y-m-d', strtotime($expiration))) < strtotime(date_i18n('Y-m-d', current_time('timestamp'))) ? true : false;
                 
-                if ( (int)$bill_times == 0 ) {
+                if ((int)$bill_times == 0) {
                     $status = $expired ? 'expired' : 'active';
-                } else if ( $bill_times > 0 && $times_billed >= $bill_times ) {
+                } else if ($bill_times > 0 && $times_billed >= $bill_times) {
                     $status = 'completed';
-                } else if ( $expired ) {
+                } else if ($expired) {
                     $status = 'expired';
-                } else if ( $bill_times > 0 ) {
+                } else if ($bill_times > 0) {
                     $status = 'active';
                 } else {
                     $status = 'pending';
                 }
             }
             
-            if ( $status && $status != $subscription_status ) {
+            if ($status && $status != $subscription_status) {
                 $subscription_status = $status;
                 
-                $this->update_meta( '_wpinv_subscr_status', $status );
+                $this->update_meta('_wpinv_subscr_status', $status);
             }
         }
         
         return $subscription_status;
     }
     
-    public function get_subscription_status_label( $status = '' ) {
-        $status = !empty( $status ) ? $status : $this->get_subscription_status();
+    public function get_subscription_status_label($status = '') {
+        $status = !empty($status) ? $status : $this->get_subscription_status();
 
-        switch( $status ) {
+        switch ($status) {
             case 'active' :
-                $status_label = __( 'Active', 'invoicing' );
+                $status_label = __('Active', 'invoicing');
                 break;
 
             case 'cancelled' :
-                $status_label = __( 'Cancelled', 'invoicing' );
+                $status_label = __('Cancelled', 'invoicing');
                 break;
                 
             case 'completed' :
-                $status_label = __( 'Completed', 'invoicing' );
+                $status_label = __('Completed', 'invoicing');
                 break;
 
             case 'expired' :
-                $status_label = __( 'Expired', 'invoicing' );
+                $status_label = __('Expired', 'invoicing');
                 break;
 
             case 'pending' :
-                $status_label = __( 'Pending', 'invoicing' );
+                $status_label = __('Pending', 'invoicing');
                 break;
 
             case 'failing' :
-                $status_label = __( 'Failing', 'invoicing' );
+                $status_label = __('Failing', 'invoicing');
                 break;
                 
             case 'stopped' :
-                $status_label = __( 'Stopped', 'invoicing' );
+                $status_label = __('Stopped', 'invoicing');
                 break;
                 
             case 'trialing' :
-                $status_label = __( 'Trialing', 'invoicing' );
+                $status_label = __('Trialing', 'invoicing');
                 break;
 
             default:
@@ -2325,26 +2325,26 @@ 
         return $status_label;
     }
     
-    public function get_subscription_period( $full = false ) {
-        $period = $this->get_meta( '_wpinv_subscr_period', true );
+    public function get_subscription_period($full = false) {
+        $period = $this->get_meta('_wpinv_subscr_period', true);
         
         // Fix period for old invoices
-        if ( $period == 'day' ) {
+        if ($period == 'day') {
             $period = 'D';
-        } else if ( $period == 'week' ) {
+        } else if ($period == 'week') {
             $period = 'W';
-        } else if ( $period == 'month' ) {
+        } else if ($period == 'month') {
             $period = 'M';
-        } else if ( $period == 'year' ) {
+        } else if ($period == 'year') {
             $period = 'Y';
         }
         
-        if ( !in_array( $period, array( 'D', 'W', 'M', 'Y' ) ) ) {
+        if (!in_array($period, array('D', 'W', 'M', 'Y'))) {
             $period = 'D';
         }
         
-        if ( $full ) {
-            switch( $period ) {
+        if ($full) {
+            switch ($period) {
                 case 'D':
                     $period = 'day';
                 break;
@@ -2364,39 +2364,39 @@ 
     }
     
     public function get_subscription_interval() {
-        $interval = (int)$this->get_meta( '_wpinv_subscr_interval', true );
+        $interval = (int)$this->get_meta('_wpinv_subscr_interval', true);
         
-        if ( !$interval > 0 ) {
+        if (!$interval > 0) {
             $interval = 1;
         }
         
         return $interval;
     }
     
-    public function get_subscription_trial_period( $full = false ) {
-        if ( !$this->is_free_trial() ) {
+    public function get_subscription_trial_period($full = false) {
+        if (!$this->is_free_trial()) {
             return '';
         }
         
-        $period = $this->get_meta( '_wpinv_subscr_trial_period', true );
+        $period = $this->get_meta('_wpinv_subscr_trial_period', true);
         
         // Fix period for old invoices
-        if ( $period == 'day' ) {
+        if ($period == 'day') {
             $period = 'D';
-        } else if ( $period == 'week' ) {
+        } else if ($period == 'week') {
             $period = 'W';
-        } else if ( $period == 'month' ) {
+        } else if ($period == 'month') {
             $period = 'M';
-        } else if ( $period == 'year' ) {
+        } else if ($period == 'year') {
             $period = 'Y';
         }
         
-        if ( !in_array( $period, array( 'D', 'W', 'M', 'Y' ) ) ) {
+        if (!in_array($period, array('D', 'W', 'M', 'Y'))) {
             $period = 'D';
         }
         
-        if ( $full ) {
-            switch( $period ) {
+        if ($full) {
+            switch ($period) {
                 case 'D':
                     $period = 'day';
                 break;
@@ -2416,13 +2416,13 @@ 
     }
     
     public function get_subscription_trial_interval() {
-        if ( !$this->is_free_trial() ) {
+        if (!$this->is_free_trial()) {
             return 0;
         }
         
-        $interval = (int)$this->get_meta( '_wpinv_subscr_trial_interval', true );
+        $interval = (int)$this->get_meta('_wpinv_subscr_trial_interval', true);
         
-        if ( !$interval > 0 ) {
+        if (!$interval > 0) {
             $interval = 1;
         }
         
@@ -2434,8 +2434,8 @@ 
             'status' => 'failing'
         );
 
-        if ( $this->update_subscription( $args ) ) {
-            do_action( 'wpinv_subscription_failing', $this->ID, $this );
+        if ($this->update_subscription($args)) {
+            do_action('wpinv_subscription_failing', $this->ID, $this);
             return true;
         }
 
@@ -2447,8 +2447,8 @@ 
             'status' => 'stopped'
         );
 
-        if ( $this->update_subscription( $args ) ) {
-            do_action( 'wpinv_subscription_stopped', $this->ID, $this );
+        if ($this->update_subscription($args)) {
+            do_action('wpinv_subscription_stopped', $this->ID, $this);
             return true;
         }
 
@@ -2460,8 +2460,8 @@ 
             'status' => 'active'
         );
 
-        if ( $this->update_subscription( $args ) ) {
-            do_action( 'wpinv_subscription_restarted', $this->ID, $this );
+        if ($this->update_subscription($args)) {
+            do_action('wpinv_subscription_restarted', $this->ID, $this);
             return true;
         }
 
@@ -2473,23 +2473,23 @@ 
             'status' => 'cancelled'
         );
 
-        if ( $this->update_subscription( $args ) ) {
-            if ( is_user_logged_in() ) {
-                $userdata = get_userdata( get_current_user_id() );
+        if ($this->update_subscription($args)) {
+            if (is_user_logged_in()) {
+                $userdata = get_userdata(get_current_user_id());
                 $user     = $userdata->user_login;
             } else {
-                $user = __( 'gateway', 'invoicing' );
+                $user = __('gateway', 'invoicing');
             }
             
             $subscription_id = $this->get_subscription_id();
-            if ( !$subscription_id ) {
+            if (!$subscription_id) {
                 $subscription_id = $this->ID;
             }
 
-            $note = sprintf( __( 'Subscription %s has been cancelled by %s', 'invoicing' ), $subscription_id, $user );
-            $this->add_note( $note );
+            $note = sprintf(__('Subscription %s has been cancelled by %s', 'invoicing'), $subscription_id, $user);
+            $this->add_note($note);
 
-            do_action( 'wpinv_subscription_cancelled', $this->ID, $this );
+            do_action('wpinv_subscription_cancelled', $this->ID, $this);
             return true;
         }
 
@@ -2497,11 +2497,11 @@ 
     }
 
     public function can_cancel() {
-        return apply_filters( 'wpinv_subscription_can_cancel', false, $this );
+        return apply_filters('wpinv_subscription_can_cancel', false, $this);
     }
     
-    public function add_subscription( $data = array() ) {
-        if ( empty( $this->ID ) ) {
+    public function add_subscription($data = array()) {
+        if (empty($this->ID)) {
             return false;
         }
 
@@ -2520,85 +2520,85 @@ 
             'profile_id'        => '',
         );
 
-        $args = wp_parse_args( $data, $defaults );
+        $args = wp_parse_args($data, $defaults);
 
-        if ( $args['expiration'] && strtotime( 'NOW', current_time( 'timestamp' ) ) > strtotime( $args['expiration'], current_time( 'timestamp' ) ) ) {
-            if ( 'active' == $args['status'] || $args['status'] == 'trialing' ) {
+        if ($args['expiration'] && strtotime('NOW', current_time('timestamp')) > strtotime($args['expiration'], current_time('timestamp'))) {
+            if ('active' == $args['status'] || $args['status'] == 'trialing') {
                 $args['status'] = 'expired';
             }
         }
 
-        do_action( 'wpinv_subscription_pre_create', $args, $data, $this );
+        do_action('wpinv_subscription_pre_create', $args, $data, $this);
         
-        if ( !empty( $args ) ) {
-            foreach ( $args as $key => $value ) {
-                $this->update_meta( '_wpinv_subscr_' . $key, $value );
+        if (!empty($args)) {
+            foreach ($args as $key => $value) {
+                $this->update_meta('_wpinv_subscr_' . $key, $value);
             }
         }
 
-        do_action( 'wpinv_subscription_post_create', $args, $data, $this );
+        do_action('wpinv_subscription_post_create', $args, $data, $this);
 
         return true;
     }
     
-    public function update_subscription( $args = array() ) {
-        if ( empty( $this->ID ) ) {
+    public function update_subscription($args = array()) {
+        if (empty($this->ID)) {
             return false;
         }
 
-        if ( !empty( $args['expiration'] ) && $args['expiration'] && strtotime( 'NOW', current_time( 'timestamp' ) ) > strtotime( $args['expiration'], current_time( 'timestamp' ) ) ) {
-            if ( !isset( $args['status'] ) || ( isset( $args['status'] ) && ( 'active' == $args['status'] || $args['status'] == 'trialing' ) ) ) {
+        if (!empty($args['expiration']) && $args['expiration'] && strtotime('NOW', current_time('timestamp')) > strtotime($args['expiration'], current_time('timestamp'))) {
+            if (!isset($args['status']) || (isset($args['status']) && ('active' == $args['status'] || $args['status'] == 'trialing'))) {
                 $args['status'] = 'expired';
             }
         }
 
-        if ( isset( $args['status'] ) && $args['status'] == 'cancelled' && empty( $args['cancelled_on'] ) ) {
-            $args['cancelled_on'] = date_i18n( 'Y-m-d H:i:s', current_time( 'timestamp' ) );
+        if (isset($args['status']) && $args['status'] == 'cancelled' && empty($args['cancelled_on'])) {
+            $args['cancelled_on'] = date_i18n('Y-m-d H:i:s', current_time('timestamp'));
         }
 
-        do_action( 'wpinv_subscription_pre_update', $args, $this );
+        do_action('wpinv_subscription_pre_update', $args, $this);
         
-        if ( !empty( $args ) ) {
-            foreach ( $args as $key => $value ) {
-                $this->update_meta( '_wpinv_subscr_' . $key, $value );
+        if (!empty($args)) {
+            foreach ($args as $key => $value) {
+                $this->update_meta('_wpinv_subscr_' . $key, $value);
             }
         }
 
-        do_action( 'wpinv_subscription_post_update', $args, $this );
+        do_action('wpinv_subscription_post_update', $args, $this);
 
         return true;
     }
     
     public function renew_subscription() {
         $parent_invoice = $this->get_parent_payment();
-        $parent_invoice = empty( $parent_invoice ) ? $this : $parent_invoice;
+        $parent_invoice = empty($parent_invoice) ? $this : $parent_invoice;
         
-        $current_time   = current_time( 'timestamp' );
+        $current_time   = current_time('timestamp');
         $start          = $this->get_subscription_created();
-        $start          = $start ? strtotime( $start ) : $current_time;
+        $start          = $start ? strtotime($start) : $current_time;
         $expires        = $this->get_expiration_time();
         
-        if ( !$expires ) {
-            $expires    = strtotime( '+' . $parent_invoice->get_subscription_interval() . ' ' . $parent_invoice->get_subscription_period( true ), $start );
+        if (!$expires) {
+            $expires    = strtotime('+' . $parent_invoice->get_subscription_interval() . ' ' . $parent_invoice->get_subscription_period(true), $start);
         }
         
-        $expiration     = date_i18n( 'Y-m-d 23:59:59', $expires );
-        $expiration     = apply_filters( 'wpinv_subscription_renewal_expiration', $expiration, $this->ID, $this );
+        $expiration     = date_i18n('Y-m-d 23:59:59', $expires);
+        $expiration     = apply_filters('wpinv_subscription_renewal_expiration', $expiration, $this->ID, $this);
         $bill_times     = $parent_invoice->get_bill_times();
         $times_billed   = $parent_invoice->get_total_payments();
         
-        if ( $parent_invoice->get_subscription_status() == 'trialing' && ( $times_billed > 0 || strtotime( date_i18n( 'Y-m-d' ) ) < strtotime( $parent_invoice->get_trial_end_date( false ) ) ) ) {
+        if ($parent_invoice->get_subscription_status() == 'trialing' && ($times_billed > 0 || strtotime(date_i18n('Y-m-d')) < strtotime($parent_invoice->get_trial_end_date(false)))) {
             $args = array(
                 'status'     => 'active',
             );
 
-            $parent_invoice->update_subscription( $args );
+            $parent_invoice->update_subscription($args);
         }
         
-        do_action( 'wpinv_subscription_pre_renew', $this->ID, $expiration, $this );
+        do_action('wpinv_subscription_pre_renew', $this->ID, $expiration, $this);
 
-        $status       = 'active';
-        if ( $bill_times > 0 && $times_billed >= $bill_times ) {
+        $status = 'active';
+        if ($bill_times > 0 && $times_billed >= $bill_times) {
             $this->complete_subscription();
             $status = 'completed';
         }
@@ -2608,10 +2608,10 @@ 
             'status'     => $status,
         );
 
-        $this->update_subscription( $args );
+        $this->update_subscription($args);
 
-        do_action( 'wpinv_subscription_post_renew', $this->ID, $expiration, $this );
-        do_action( 'wpinv_recurring_set_subscription_status', $this->ID, $status, $this );
+        do_action('wpinv_subscription_post_renew', $this->ID, $expiration, $this);
+        do_action('wpinv_recurring_set_subscription_status', $this->ID, $status, $this);
     }
     
     public function complete_subscription() {
@@ -2619,8 +2619,8 @@ 
             'status' => 'completed'
         );
 
-        if ( $this->update_subscription( $args ) ) {
-            do_action( 'wpinv_subscription_completed', $this->ID, $this );
+        if ($this->update_subscription($args)) {
+            do_action('wpinv_subscription_completed', $this->ID, $this);
         }
     }
     
@@ -2629,44 +2629,44 @@ 
             'status' => 'expired'
         );
 
-        if ( $this->update_subscription( $args ) ) {
-            do_action( 'wpinv_subscription_expired', $this->ID, $this );
+        if ($this->update_subscription($args)) {
+            do_action('wpinv_subscription_expired', $this->ID, $this);
         }
     }
 
     public function get_cancel_url() {
-        $url = wp_nonce_url( add_query_arg( array( 'wpi_action' => 'cancel_subscription', 'sub_id' => $this->ID ) ), 'wpinv-recurring-cancel' );
+        $url = wp_nonce_url(add_query_arg(array('wpi_action' => 'cancel_subscription', 'sub_id' => $this->ID)), 'wpinv-recurring-cancel');
 
-        return apply_filters( 'wpinv_subscription_cancel_url', $url, $this );
+        return apply_filters('wpinv_subscription_cancel_url', $url, $this);
     }
 
     public function can_update() {
-        return apply_filters( 'wpinv_subscription_can_update', false, $this );
+        return apply_filters('wpinv_subscription_can_update', false, $this);
     }
 
     public function get_update_url() {
-        $url = add_query_arg( array( 'action' => 'update', 'sub_id' => $this->ID ) );
+        $url = add_query_arg(array('action' => 'update', 'sub_id' => $this->ID));
 
-        return apply_filters( 'wpinv_subscription_update_url', $url, $this );
+        return apply_filters('wpinv_subscription_update_url', $url, $this);
     }
 
     public function is_parent() {
-        $is_parent = empty( $this->parent_invoice ) ? true : false;
+        $is_parent = empty($this->parent_invoice) ? true : false;
 
-        return apply_filters( 'wpinv_invoice_is_parent', $is_parent, $this );
+        return apply_filters('wpinv_invoice_is_parent', $is_parent, $this);
     }
     
     public function is_renewal() {
         $is_renewal = $this->parent_invoice && $this->parent_invoice != $this->ID ? true : false;
 
-        return apply_filters( 'wpinv_invoice_is_renewal', $is_renewal, $this );
+        return apply_filters('wpinv_invoice_is_renewal', $is_renewal, $this);
     }
     
     public function get_parent_payment() {
         $parent_payment = NULL;
         
-        if ( $this->is_renewal() ) {
-            $parent_payment = wpinv_get_invoice( $this->parent_invoice );
+        if ($this->is_renewal()) {
+            $parent_payment = wpinv_get_invoice($this->parent_invoice);
         }
         
         return $parent_payment;
@@ -2677,100 +2677,100 @@ 
         
         $subscription_status = $this->get_subscription_status();
 
-        if( ! $this->is_subscription_expired() && ( $subscription_status == 'active' || $subscription_status == 'cancelled' || $subscription_status == 'trialing' ) ) {
+        if (!$this->is_subscription_expired() && ($subscription_status == 'active' || $subscription_status == 'cancelled' || $subscription_status == 'trialing')) {
             $ret = true;
         }
 
-        return apply_filters( 'wpinv_subscription_is_active', $ret, $this->ID, $this );
+        return apply_filters('wpinv_subscription_is_active', $ret, $this->ID, $this);
     }
 
     public function is_subscription_expired() {
         $ret = false;
         $subscription_status = $this->get_subscription_status();
 
-        if ( $subscription_status == 'expired' ) {
+        if ($subscription_status == 'expired') {
             $ret = true;
-        } else if ( 'active' === $subscription_status || 'cancelled' === $subscription_status || 'trialing' == $subscription_status ) {
+        } else if ('active' === $subscription_status || 'cancelled' === $subscription_status || 'trialing' == $subscription_status) {
             $ret        = false;
             $expiration = $this->get_expiration_time();
 
-            if ( $expiration && strtotime( 'NOW', current_time( 'timestamp' ) ) > $expiration ) {
+            if ($expiration && strtotime('NOW', current_time('timestamp')) > $expiration) {
                 $ret = true;
 
-                if ( 'active' === $subscription_status || 'trialing' === $subscription_status ) {
+                if ('active' === $subscription_status || 'trialing' === $subscription_status) {
                     $this->expire_subscription();
                 }
             }
         }
 
-        return apply_filters( 'wpinv_subscription_is_expired', $ret, $this->ID, $this );
+        return apply_filters('wpinv_subscription_is_expired', $ret, $this->ID, $this);
     }
     
-    public function get_new_expiration( $item_id = 0, $trial = true ) {
-        $item   = new WPInv_Item( $item_id );
+    public function get_new_expiration($item_id = 0, $trial = true) {
+        $item   = new WPInv_Item($item_id);
         $interval = $item->get_recurring_interval();
-        $period = $item->get_recurring_period( true );
+        $period = $item->get_recurring_period(true);
         
-        $expiration_time = strtotime( '+' . $interval . ' ' . $period );
+        $expiration_time = strtotime('+' . $interval . ' ' . $period);
         
-        if ( $trial && $this->is_free_trial() && $item->has_free_trial() ) {
-            $expiration_time += ( wpinv_period_in_days( $item->get_trial_interval(), $item->get_trial_period() ) * DAY_IN_SECONDS ) ;
+        if ($trial && $this->is_free_trial() && $item->has_free_trial()) {
+            $expiration_time += (wpinv_period_in_days($item->get_trial_interval(), $item->get_trial_period()) * DAY_IN_SECONDS);
         }
 
-        return date_i18n( 'Y-m-d 23:59:59', $expiration_time );
+        return date_i18n('Y-m-d 23:59:59', $expiration_time);
     }
     
-    public function get_subscription_data( $filed = '' ) {
-        $fields = array( 'item_id', 'status', 'period', 'initial_amount', 'recurring_amount', 'interval', 'bill_times', 'trial_period', 'trial_interval', 'expiration', 'profile_id', 'created', 'cancelled_on' );
+    public function get_subscription_data($filed = '') {
+        $fields = array('item_id', 'status', 'period', 'initial_amount', 'recurring_amount', 'interval', 'bill_times', 'trial_period', 'trial_interval', 'expiration', 'profile_id', 'created', 'cancelled_on');
         
         $subscription_meta = array();
-        foreach ( $fields as $field ) {
-            $subscription_meta[ $field ] = $this->get_meta( '_wpinv_subscr_' . $field );
+        foreach ($fields as $field) {
+            $subscription_meta[$field] = $this->get_meta('_wpinv_subscr_' . $field);
         }
         
-        $item = $this->get_recurring( true );
+        $item = $this->get_recurring(true);
         
-        if ( !empty( $item ) ) {
-            if ( empty( $subscription_meta['item_id'] ) ) {
+        if (!empty($item)) {
+            if (empty($subscription_meta['item_id'])) {
                 $subscription_meta['item_id'] = $item->ID;
             }
-            if ( empty( $subscription_meta['period'] ) ) {
+            if (empty($subscription_meta['period'])) {
                 $subscription_meta['period'] = $item->get_recurring_period();
             }
-            if ( empty( $subscription_meta['interval'] ) ) {
+            if (empty($subscription_meta['interval'])) {
                 $subscription_meta['interval'] = $item->get_recurring_interval();
             }
-            if ( $item->has_free_trial() ) {
-                if ( empty( $subscription_meta['trial_period'] ) ) {
+            if ($item->has_free_trial()) {
+                if (empty($subscription_meta['trial_period'])) {
                     $subscription_meta['trial_period'] = $item->get_trial_period();
                 }
-                if ( empty( $subscription_meta['trial_interval'] ) ) {
+                if (empty($subscription_meta['trial_interval'])) {
                     $subscription_meta['trial_interval'] = $item->get_trial_interval();
                 }
             } else {
                 $subscription_meta['trial_period']      = '';
                 $subscription_meta['trial_interval']    = 0;
             }
-            if ( !$subscription_meta['bill_times'] && $subscription_meta['bill_times'] !== 0 ) {
+            if (!$subscription_meta['bill_times'] && $subscription_meta['bill_times'] !== 0) {
                 $subscription_meta['bill_times'] = $item->get_recurring_limit();
             }
-            if ( $subscription_meta['initial_amount'] === '' || $subscription_meta['recurring_amount'] === '' ) {
-                $subscription_meta['initial_amount']    = wpinv_round_amount( $this->get_total() );
-                $subscription_meta['recurring_amount']  = wpinv_round_amount( $this->get_recurring_details( 'total' ) );
+            if ($subscription_meta['initial_amount'] === '' || $subscription_meta['recurring_amount'] === '') {
+                $subscription_meta['initial_amount']    = wpinv_round_amount($this->get_total());
+                $subscription_meta['recurring_amount']  = wpinv_round_amount($this->get_recurring_details('total'));
             }
         }
         
-        if ( $filed === '' ) {
-            return apply_filters( 'wpinv_get_invoice_subscription_data', $subscription_meta, $this );
+        if ($filed === '') {
+            return apply_filters('wpinv_get_invoice_subscription_data', $subscription_meta, $this);
         }
         
-        $value = isset( $subscription_meta[$filed] ) ? $subscription_meta[$filed] : '';
+        $value = isset($subscription_meta[$filed]) ? $subscription_meta[$filed] : '';
         
-        return apply_filters( 'wpinv_invoice_subscription_data_value', $value, $subscription_meta, $this );
+        return apply_filters('wpinv_invoice_subscription_data_value', $value, $subscription_meta, $this);
     }
     
     public function is_paid() {
-        if ( $this->has_status( array( 'publish', 'wpi-processing', 'wpi-renewal' ) ) ) {
+        if ($this->has_status(array('publish', 'wpi-processing', 'wpi-renewal'))) {
             return true;
         }
         
@@ -2778,23 +2778,23 @@ 
     }
     
     public function is_refunded() {
-        $is_refunded = $this->has_status( array( 'wpi-refunded' ) );
+        $is_refunded = $this->has_status(array('wpi-refunded'));
 
-        return apply_filters( 'wpinv_invoice_is_refunded', $is_refunded, $this );
+        return apply_filters('wpinv_invoice_is_refunded', $is_refunded, $this);
     }
     
     public function is_free() {
         $is_free = false;
         
-        if ( !( (float)wpinv_round_amount( $this->get_total() ) > 0 ) ) {
-            if ( $this->is_parent() && $this->is_recurring() ) {
-                $is_free = (float)wpinv_round_amount( $this->get_recurring_details( 'total' ) ) > 0 ? false : true;
+        if (!((float)wpinv_round_amount($this->get_total()) > 0)) {
+            if ($this->is_parent() && $this->is_recurring()) {
+                $is_free = (float)wpinv_round_amount($this->get_recurring_details('total')) > 0 ? false : true;
             } else {
                 $is_free = true;
             }
         }
         
-        return apply_filters( 'wpinv_invoice_is_free', $is_free, $this );
+        return apply_filters('wpinv_invoice_is_free', $is_free, $this);
     }
     
     public function has_vat() {
@@ -2802,41 +2802,41 @@ 
         
         $requires_vat = false;
         
-        if ( $this->country ) {
+        if ($this->country) {
             $wpi_country        = $this->country;
             
-            $requires_vat       = $wpinv_euvat->requires_vat( $requires_vat, $this->get_user_id(), $wpinv_euvat->invoice_has_digital_rule( $this ) );
+            $requires_vat       = $wpinv_euvat->requires_vat($requires_vat, $this->get_user_id(), $wpinv_euvat->invoice_has_digital_rule($this));
         }
         
-        return apply_filters( 'wpinv_invoice_has_vat', $requires_vat, $this );
+        return apply_filters('wpinv_invoice_has_vat', $requires_vat, $this);
     }
     
     public function refresh_item_ids() {
         $item_ids = array();
         
-        if ( !empty( $this->cart_details ) ) {
-            foreach ( $this->cart_details as $key => $item ) {
-                if ( !empty( $item['id'] ) ) {
+        if (!empty($this->cart_details)) {
+            foreach ($this->cart_details as $key => $item) {
+                if (!empty($item['id'])) {
                     $item_ids[] = $item['id'];
                 }
             }
         }
         
-        $item_ids = !empty( $item_ids ) ? implode( ',', array_unique( $item_ids ) ) : '';
+        $item_ids = !empty($item_ids) ? implode(',', array_unique($item_ids)) : '';
         
-        update_post_meta( $this->ID, '_wpinv_item_ids', $item_ids );
+        update_post_meta($this->ID, '_wpinv_item_ids', $item_ids);
     }
     
-    public function get_invoice_quote_type( $post_id ) {
-        if ( empty( $post_id ) ) {
+    public function get_invoice_quote_type($post_id) {
+        if (empty($post_id)) {
             return '';
         }
 
-        $type = get_post_type( $post_id );
+        $type = get_post_type($post_id);
 
-        if ( 'wpi_invoice' === $type ) {
+        if ('wpi_invoice' === $type) {
             $post_type = __('Invoice', 'invoicing');
-        } else{
+        } else {
             $post_type = __('Quote', 'invoicing');
         }
 

includes/wpinv-template-functions.php

Spacing +687 added lines, -687 removed lines

@@ -7,91 +7,91 @@ 
  */
  
 // MUST have WordPress.
-if ( !defined( 'WPINC' ) ) {
-    exit( 'Do NOT access this file directly: ' . basename( __FILE__ ) );
+if (!defined('WPINC')) {
+    exit('Do NOT access this file directly: ' . basename(__FILE__));
 }
 
-if ( !is_admin() ) {
-    add_filter( 'template_include', 'wpinv_template', 10, 1 );
-    add_action( 'wpinv_invoice_print_body_start', 'wpinv_display_invoice_top_bar' );
-    add_action( 'wpinv_invoice_top_bar_left', 'wpinv_invoice_display_left_actions' );
-    add_action( 'wpinv_invoice_top_bar_right', 'wpinv_invoice_display_right_actions' );
+if (!is_admin()) {
+    add_filter('template_include', 'wpinv_template', 10, 1);
+    add_action('wpinv_invoice_print_body_start', 'wpinv_display_invoice_top_bar');
+    add_action('wpinv_invoice_top_bar_left', 'wpinv_invoice_display_left_actions');
+    add_action('wpinv_invoice_top_bar_right', 'wpinv_invoice_display_right_actions');
 }
 
 function wpinv_template_path() {
-    return apply_filters( 'wpinv_template_path', 'invoicing/' );
+    return apply_filters('wpinv_template_path', 'invoicing/');
 }
 
-function wpinv_display_invoice_top_bar( $invoice ) {
-    if ( empty( $invoice ) ) {
+function wpinv_display_invoice_top_bar($invoice) {
+    if (empty($invoice)) {
         return;
     }
     ?>
     <div class="row wpinv-top-bar no-print">
         <div class="container">
             <div class="col-xs-6">
-                <?php do_action( 'wpinv_invoice_top_bar_left', $invoice );?>
+                <?php do_action('wpinv_invoice_top_bar_left', $invoice); ?>
             </div>
             <div class="col-xs-6 text-right">
-                <?php do_action( 'wpinv_invoice_top_bar_right', $invoice );?>
+                <?php do_action('wpinv_invoice_top_bar_right', $invoice); ?>
             </div>
         </div>
     </div>
     <?php
 }
 
-function wpinv_invoice_display_left_actions( $invoice ) {
-    if ( empty( $invoice ) ) {
+function wpinv_invoice_display_left_actions($invoice) {
+    if (empty($invoice)) {
         return; // Exit if invoice is not set.
     }
     
-    if ( $invoice->post_type == 'wpi_invoice' ) {
-        if ( $invoice->needs_payment() ) {
-            ?> <a class="btn btn-success btn-sm" title="<?php esc_attr_e( 'Pay This Invoice', 'invoicing' ); ?>" href="<?php echo esc_url( $invoice->get_checkout_payment_url() ); ?>"><?php _e( 'Pay For Invoice', 'invoicing' ); ?></a><?php
+    if ($invoice->post_type == 'wpi_invoice') {
+        if ($invoice->needs_payment()) {
+            ?> <a class="btn btn-success btn-sm" title="<?php esc_attr_e('Pay This Invoice', 'invoicing'); ?>" href="<?php echo esc_url($invoice->get_checkout_payment_url()); ?>"><?php _e('Pay For Invoice', 'invoicing'); ?></a><?php
         }
     }
     do_action('wpinv_invoice_display_left_actions', $invoice);
 }
 
-function wpinv_invoice_display_right_actions( $invoice ) {
-    if ( empty( $invoice ) ) {
+function wpinv_invoice_display_right_actions($invoice) {
+    if (empty($invoice)) {
         return; // Exit if invoice is not set.
     }
 
-    if ( $invoice->post_type == 'wpi_invoice' ) { ?>
-        <a class="btn btn-primary btn-sm" onclick="window.print();" href="javascript:void(0)"><?php _e( 'Print Invoice', 'invoicing' ); ?></a>
-        <?php if ( is_user_logged_in() ) { ?>
-        &nbsp;&nbsp;<a class="btn btn-warning btn-sm" href="<?php echo esc_url( wpinv_get_history_page_uri() ); ?>"><?php _e( 'Invoice History', 'invoicing' ); ?></a>
+    if ($invoice->post_type == 'wpi_invoice') { ?>
+        <a class="btn btn-primary btn-sm" onclick="window.print();" href="javascript:void(0)"><?php _e('Print Invoice', 'invoicing'); ?></a>
+        <?php if (is_user_logged_in()) { ?>
+        &nbsp;&nbsp;<a class="btn btn-warning btn-sm" href="<?php echo esc_url(wpinv_get_history_page_uri()); ?>"><?php _e('Invoice History', 'invoicing'); ?></a>
         <?php }
     }
     do_action('wpinv_invoice_display_right_actions', $invoice);
 }
 
-function wpinv_before_invoice_content( $content ) {
+function wpinv_before_invoice_content($content) {
     global $post;
 
-    if ( !empty( $post ) && $post->post_type == 'wpi_invoice' && is_singular( 'wpi_invoice' ) && is_main_query() ) {
+    if (!empty($post) && $post->post_type == 'wpi_invoice' && is_singular('wpi_invoice') && is_main_query()) {
         ob_start();
-        do_action( 'wpinv_before_invoice_content', $post->ID );
+        do_action('wpinv_before_invoice_content', $post->ID);
         $content = ob_get_clean() . $content;
     }
 
     return $content;
 }
-add_filter( 'the_content', 'wpinv_before_invoice_content' );
+add_filter('the_content', 'wpinv_before_invoice_content');
 
-function wpinv_after_invoice_content( $content ) {
+function wpinv_after_invoice_content($content) {
     global $post;
 
-    if ( !empty( $post ) && $post->post_type == 'wpi_invoice' && is_singular( 'wpi_invoice' ) && is_main_query() ) {
+    if (!empty($post) && $post->post_type == 'wpi_invoice' && is_singular('wpi_invoice') && is_main_query()) {
         ob_start();
-        do_action( 'wpinv_after_invoice_content', $post->ID );
+        do_action('wpinv_after_invoice_content', $post->ID);
         $content .= ob_get_clean();
     }
 
     return $content;
 }
-add_filter( 'the_content', 'wpinv_after_invoice_content' );
+add_filter('the_content', 'wpinv_after_invoice_content');
 
 function wpinv_get_templates_dir() {
     return WPINV_PLUGIN_DIR . 'templates';
@@ -101,105 +101,105 @@ 
     return WPINV_PLUGIN_URL . 'templates';
 }
 
-function wpinv_get_template( $template_name, $args = array(), $template_path = '', $default_path = '' ) {
-    if ( ! empty( $args ) && is_array( $args ) ) {
-		extract( $args );
+function wpinv_get_template($template_name, $args = array(), $template_path = '', $default_path = '') {
+    if (!empty($args) && is_array($args)) {
+		extract($args);
 	}
 
-	$located = wpinv_locate_template( $template_name, $template_path, $default_path );
+	$located = wpinv_locate_template($template_name, $template_path, $default_path);
 	// Allow 3rd party plugin filter template file from their plugin.
-	$located = apply_filters( 'wpinv_get_template', $located, $template_name, $args, $template_path, $default_path );
+	$located = apply_filters('wpinv_get_template', $located, $template_name, $args, $template_path, $default_path);
 
-	if ( ! file_exists( $located ) ) {
-        _doing_it_wrong( __FUNCTION__, sprintf( '<code>%s</code> does not exist.', $located ), '2.1' );
+	if (!file_exists($located)) {
+        _doing_it_wrong(__FUNCTION__, sprintf('<code>%s</code> does not exist.', $located), '2.1');
 		return;
 	}
 
-	do_action( 'wpinv_before_template_part', $template_name, $template_path, $located, $args );
+	do_action('wpinv_before_template_part', $template_name, $template_path, $located, $args);
 
-	include( $located );
+	include($located);
 
-	do_action( 'wpinv_after_template_part', $template_name, $template_path, $located, $args );
+	do_action('wpinv_after_template_part', $template_name, $template_path, $located, $args);
 }
 
-function wpinv_get_template_html( $template_name, $args = array(), $template_path = '', $default_path = '' ) {
+function wpinv_get_template_html($template_name, $args = array(), $template_path = '', $default_path = '') {
 	ob_start();
-	wpinv_get_template( $template_name, $args, $template_path, $default_path );
+	wpinv_get_template($template_name, $args, $template_path, $default_path);
 	return ob_get_clean();
 }
 
-function wpinv_locate_template( $template_name, $template_path = '', $default_path = '' ) {
-    if ( ! $template_path ) {
+function wpinv_locate_template($template_name, $template_path = '', $default_path = '') {
+    if (!$template_path) {
         $template_path = wpinv_template_path();
     }
 
-    if ( ! $default_path ) {
+    if (!$default_path) {
         $default_path = WPINV_PLUGIN_DIR . 'templates/';
     }
 
     // Look within passed path within the theme - this is priority.
     $template = locate_template(
         array(
-            trailingslashit( $template_path ) . $template_name,
+            trailingslashit($template_path) . $template_name,
             $template_name
         )
     );
 
     // Get default templates/
-    if ( !$template && $default_path ) {
-        $template = trailingslashit( $default_path ) . $template_name;
+    if (!$template && $default_path) {
+        $template = trailingslashit($default_path) . $template_name;
     }
 
     // Return what we found.
-    return apply_filters( 'wpinv_locate_template', $template, $template_name, $template_path );
+    return apply_filters('wpinv_locate_template', $template, $template_name, $template_path);
 }
 
-function wpinv_get_template_part( $slug, $name = null, $load = true ) {
-	do_action( 'get_template_part_' . $slug, $slug, $name );
+function wpinv_get_template_part($slug, $name = null, $load = true) {
+	do_action('get_template_part_' . $slug, $slug, $name);
 
 	// Setup possible parts
 	$templates = array();
-	if ( isset( $name ) )
+	if (isset($name))
 		$templates[] = $slug . '-' . $name . '.php';
 	$templates[] = $slug . '.php';
 
 	// Allow template parts to be filtered
-	$templates = apply_filters( 'wpinv_get_template_part', $templates, $slug, $name );
+	$templates = apply_filters('wpinv_get_template_part', $templates, $slug, $name);
 
 	// Return the part that is found
-	return wpinv_locate_tmpl( $templates, $load, false );
+	return wpinv_locate_tmpl($templates, $load, false);
 }
 
-function wpinv_locate_tmpl( $template_names, $load = false, $require_once = true ) {
+function wpinv_locate_tmpl($template_names, $load = false, $require_once = true) {
 	// No file found yet
 	$located = false;
 
 	// Try to find a template file
-	foreach ( (array)$template_names as $template_name ) {
+	foreach ((array)$template_names as $template_name) {
 
 		// Continue if template is empty
-		if ( empty( $template_name ) )
+		if (empty($template_name))
 			continue;
 
 		// Trim off any slashes from the template name
-		$template_name = ltrim( $template_name, '/' );
+		$template_name = ltrim($template_name, '/');
 
 		// try locating this template file by looping through the template paths
-		foreach( wpinv_get_theme_template_paths() as $template_path ) {
+		foreach (wpinv_get_theme_template_paths() as $template_path) {
 
-			if( file_exists( $template_path . $template_name ) ) {
+			if (file_exists($template_path . $template_name)) {
 				$located = $template_path . $template_name;
 				break;
 			}
 		}
 
-		if( !empty( $located ) ) {
+		if (!empty($located)) {
 			break;
 		}
 	}
 
-	if ( ( true == $load ) && ! empty( $located ) )
-		load_template( $located, $require_once );
+	if ((true == $load) && !empty($located))
+		load_template($located, $require_once);
 
 	return $located;
 }
@@ -208,143 +208,143 @@ 
 	$template_dir = wpinv_get_theme_template_dir_name();
 
 	$file_paths = array(
-		1 => trailingslashit( get_stylesheet_directory() ) . $template_dir,
-		10 => trailingslashit( get_template_directory() ) . $template_dir,
+		1 => trailingslashit(get_stylesheet_directory()) . $template_dir,
+		10 => trailingslashit(get_template_directory()) . $template_dir,
 		100 => wpinv_get_templates_dir()
 	);
 
-	$file_paths = apply_filters( 'wpinv_template_paths', $file_paths );
+	$file_paths = apply_filters('wpinv_template_paths', $file_paths);
 
 	// sort the file paths based on priority
-	ksort( $file_paths, SORT_NUMERIC );
+	ksort($file_paths, SORT_NUMERIC);
 
-	return array_map( 'trailingslashit', $file_paths );
+	return array_map('trailingslashit', $file_paths);
 }
 
 function wpinv_get_theme_template_dir_name() {
-	return trailingslashit( apply_filters( 'wpinv_templates_dir', 'wpinv_templates' ) );
+	return trailingslashit(apply_filters('wpinv_templates_dir', 'wpinv_templates'));
 }
 
 function wpinv_checkout_meta_tags() {
 
 	$pages   = array();
-	$pages[] = wpinv_get_option( 'success_page' );
-	$pages[] = wpinv_get_option( 'failure_page' );
-	$pages[] = wpinv_get_option( 'invoice_history_page' );
+	$pages[] = wpinv_get_option('success_page');
+	$pages[] = wpinv_get_option('failure_page');
+	$pages[] = wpinv_get_option('invoice_history_page');
 
-	if( !wpinv_is_checkout() && !is_page( $pages ) ) {
+	if (!wpinv_is_checkout() && !is_page($pages)) {
 		return;
 	}
 
 	echo '<meta name="robots" content="noindex,nofollow" />' . "\n";
 }
-add_action( 'wp_head', 'wpinv_checkout_meta_tags' );
+add_action('wp_head', 'wpinv_checkout_meta_tags');
 
-function wpinv_add_body_classes( $class ) {
+function wpinv_add_body_classes($class) {
 	$classes = (array)$class;
 
-	if( wpinv_is_checkout() ) {
+	if (wpinv_is_checkout()) {
 		$classes[] = 'wpinv-checkout';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_success_page() ) {
+	if (wpinv_is_success_page()) {
 		$classes[] = 'wpinv-success';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_failed_transaction_page() ) {
+	if (wpinv_is_failed_transaction_page()) {
 		$classes[] = 'wpinv-failed-transaction';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_invoice_history_page() ) {
+	if (wpinv_is_invoice_history_page()) {
 		$classes[] = 'wpinv-history';
 		$classes[] = 'wpinv-page';
 	}
 
-	if( wpinv_is_test_mode() ) {
+	if (wpinv_is_test_mode()) {
 		$classes[] = 'wpinv-test-mode';
 		$classes[] = 'wpinv-page';
 	}
 
-	return array_unique( $classes );
+	return array_unique($classes);
 }
-add_filter( 'body_class', 'wpinv_add_body_classes' );
+add_filter('body_class', 'wpinv_add_body_classes');
 
-function wpinv_html_dropdown( $name = 'wpinv_discounts', $selected = 0, $status = '' ) {
-    $args = array( 'nopaging' => true );
+function wpinv_html_dropdown($name = 'wpinv_discounts', $selected = 0, $status = '') {
+    $args = array('nopaging' => true);
 
-    if ( ! empty( $status ) )
+    if (!empty($status))
         $args['post_status'] = $status;
 
-    $discounts = wpinv_get_discounts( $args );
+    $discounts = wpinv_get_discounts($args);
     $options   = array();
 
-    if ( $discounts ) {
-        foreach ( $discounts as $discount ) {
-            $options[ absint( $discount->ID ) ] = esc_html( get_the_title( $discount->ID ) );
+    if ($discounts) {
+        foreach ($discounts as $discount) {
+            $options[absint($discount->ID)] = esc_html(get_the_title($discount->ID));
         }
     } else {
-        $options[0] = __( 'No discounts found', 'invoicing' );
+        $options[0] = __('No discounts found', 'invoicing');
     }
 
-    $output = wpinv_html_select( array(
+    $output = wpinv_html_select(array(
         'name'             => $name,
         'selected'         => $selected,
         'options'          => $options,
         'show_option_all'  => false,
         'show_option_none' => false,
-    ) );
+    ));
 
     return $output;
 }
 
-function wpinv_html_year_dropdown( $name = 'year', $selected = 0, $years_before = 5, $years_after = 0 ) {
-    $current     = date( 'Y' );
-    $start_year  = $current - absint( $years_before );
-    $end_year    = $current + absint( $years_after );
-    $selected    = empty( $selected ) ? date( 'Y' ) : $selected;
+function wpinv_html_year_dropdown($name = 'year', $selected = 0, $years_before = 5, $years_after = 0) {
+    $current     = date('Y');
+    $start_year  = $current - absint($years_before);
+    $end_year    = $current + absint($years_after);
+    $selected    = empty($selected) ? date('Y') : $selected;
     $options     = array();
 
-    while ( $start_year <= $end_year ) {
-        $options[ absint( $start_year ) ] = $start_year;
+    while ($start_year <= $end_year) {
+        $options[absint($start_year)] = $start_year;
         $start_year++;
     }
 
-    $output = wpinv_html_select( array(
+    $output = wpinv_html_select(array(
         'name'             => $name,
         'selected'         => $selected,
         'options'          => $options,
         'show_option_all'  => false,
         'show_option_none' => false
-    ) );
+    ));
 
     return $output;
 }
 
-function wpinv_html_month_dropdown( $name = 'month', $selected = 0 ) {
+function wpinv_html_month_dropdown($name = 'month', $selected = 0) {
     $month   = 1;
     $options = array();
-    $selected = empty( $selected ) ? date( 'n' ) : $selected;
+    $selected = empty($selected) ? date('n') : $selected;
 
-    while ( $month <= 12 ) {
-        $options[ absint( $month ) ] = wpinv_month_num_to_name( $month );
+    while ($month <= 12) {
+        $options[absint($month)] = wpinv_month_num_to_name($month);
         $month++;
     }
 
-    $output = wpinv_html_select( array(
+    $output = wpinv_html_select(array(
         'name'             => $name,
         'selected'         => $selected,
         'options'          => $options,
         'show_option_all'  => false,
         'show_option_none' => false
-    ) );
+    ));
 
     return $output;
 }
 
-function wpinv_html_select( $args = array() ) {
+function wpinv_html_select($args = array()) {
     $defaults = array(
         'options'          => array(),
         'name'             => null,
@@ -354,8 +354,8 @@ 
         'chosen'           => false,
         'placeholder'      => null,
         'multiple'         => false,
-        'show_option_all'  => _x( 'All', 'all dropdown items', 'invoicing' ),
-        'show_option_none' => _x( 'None', 'no dropdown items', 'invoicing' ),
+        'show_option_all'  => _x('All', 'all dropdown items', 'invoicing'),
+        'show_option_none' => _x('None', 'no dropdown items', 'invoicing'),
         'data'             => array(),
         'onchange'         => null,
         'required'         => false,
@@ -363,78 +363,78 @@ 
         'readonly'         => false,
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
     $data_elements = '';
-    foreach ( $args['data'] as $key => $value ) {
-        $data_elements .= ' data-' . esc_attr( $key ) . '="' . esc_attr( $value ) . '"';
+    foreach ($args['data'] as $key => $value) {
+        $data_elements .= ' data-' . esc_attr($key) . '="' . esc_attr($value) . '"';
     }
 
-    if( $args['multiple'] ) {
+    if ($args['multiple']) {
         $multiple = ' MULTIPLE';
     } else {
         $multiple = '';
     }
 
-    if( $args['chosen'] ) {
+    if ($args['chosen']) {
         $args['class'] .= ' wpinv-select-chosen';
     }
 
-    if( $args['placeholder'] ) {
+    if ($args['placeholder']) {
         $placeholder = $args['placeholder'];
     } else {
         $placeholder = '';
     }
     
     $options = '';
-    if( !empty( $args['onchange'] ) ) {
-        $options .= ' onchange="' . esc_attr( $args['onchange'] ) . '"';
+    if (!empty($args['onchange'])) {
+        $options .= ' onchange="' . esc_attr($args['onchange']) . '"';
     }
     
-    if( !empty( $args['required'] ) ) {
+    if (!empty($args['required'])) {
         $options .= ' required="required"';
     }
     
-    if( !empty( $args['disabled'] ) ) {
+    if (!empty($args['disabled'])) {
         $options .= ' disabled';
     }
     
-    if( !empty( $args['readonly'] ) ) {
+    if (!empty($args['readonly'])) {
         $options .= ' readonly';
     }
 
-    $class  = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
-    $output = '<select name="' . esc_attr( $args['name'] ) . '" id="' . esc_attr( $args['id'] ) . '" class="wpinv-select ' . $class . '"' . $multiple . ' data-placeholder="' . $placeholder . '" ' . trim( $options ) . $data_elements . '>';
+    $class  = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
+    $output = '<select name="' . esc_attr($args['name']) . '" id="' . esc_attr($args['id']) . '" class="wpinv-select ' . $class . '"' . $multiple . ' data-placeholder="' . $placeholder . '" ' . trim($options) . $data_elements . '>';
 
-    if ( $args['show_option_all'] ) {
-        if( $args['multiple'] ) {
-            $selected = selected( true, in_array( 0, $args['selected'] ), false );
+    if ($args['show_option_all']) {
+        if ($args['multiple']) {
+            $selected = selected(true, in_array(0, $args['selected']), false);
         } else {
-            $selected = selected( $args['selected'], 0, false );
+            $selected = selected($args['selected'], 0, false);
         }
-        $output .= '<option value="all"' . $selected . '>' . esc_html( $args['show_option_all'] ) . '</option>';
+        $output .= '<option value="all"' . $selected . '>' . esc_html($args['show_option_all']) . '</option>';
     }
 
-    if ( !empty( $args['options'] ) ) {
+    if (!empty($args['options'])) {
 
-        if ( $args['show_option_none'] ) {
-            if( $args['multiple'] ) {
-                $selected = selected( true, in_array( "", $args['selected'] ), false );
+        if ($args['show_option_none']) {
+            if ($args['multiple']) {
+                $selected = selected(true, in_array("", $args['selected']), false);
             } else {
-                $selected = selected( $args['selected'] === "", true, false );
+                $selected = selected($args['selected'] === "", true, false);
             }
-            $output .= '<option value=""' . $selected . '>' . esc_html( $args['show_option_none'] ) . '</option>';
+            $output .= '<option value=""' . $selected . '>' . esc_html($args['show_option_none']) . '</option>';
         }
 
-        foreach( $args['options'] as $key => $option ) {
+        foreach ($args['options'] as $key => $option) {
 
-            if( $args['multiple'] && is_array( $args['selected'] ) ) {
-                $selected = selected( true, (bool)in_array( $key, $args['selected'] ), false );
+            if ($args['multiple'] && is_array($args['selected'])) {
+                $selected = selected(true, (bool)in_array($key, $args['selected']), false);
             } else {
-                $selected = selected( $args['selected'], $key, false );
+                $selected = selected($args['selected'], $key, false);
             }
 
-            $output .= '<option value="' . esc_attr( $key ) . '"' . $selected . '>' . esc_html( $option ) . '</option>';
+            $output .= '<option value="' . esc_attr($key) . '"' . $selected . '>' . esc_html($option) . '</option>';
         }
     }
 
@@ -443,7 +443,7 @@ 
     return $output;
 }
 
-function wpinv_item_dropdown( $args = array() ) {
+function wpinv_item_dropdown($args = array()) {
     $defaults = array(
         'name'              => 'wpi_item',
         'id'                => 'wpi_item',
@@ -452,14 +452,14 @@ 
         'selected'          => 0,
         'chosen'            => false,
         'number'            => 100,
-        'placeholder'       => __( 'Choose a item', 'invoicing' ),
-        'data'              => array( 'search-type' => 'item' ),
+        'placeholder'       => __('Choose a item', 'invoicing'),
+        'data'              => array('search-type' => 'item'),
         'show_option_all'   => false,
         'show_option_none'  => false,
         'show_recurring'    => false,
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
     $item_args = array(
         'post_type'      => 'wpi_item',
@@ -468,44 +468,44 @@ 
         'posts_per_page' => $args['number']
     );
     
-    $item_args  = apply_filters( 'wpinv_item_dropdown_query_args', $item_args, $args, $defaults );
+    $item_args  = apply_filters('wpinv_item_dropdown_query_args', $item_args, $args, $defaults);
 
-    $items      = get_posts( $item_args );
+    $items      = get_posts($item_args);
     $options    = array();
-    if ( $items ) {
-        foreach ( $items as $item ) {
-            $title = esc_html( $item->post_title );
+    if ($items) {
+        foreach ($items as $item) {
+            $title = esc_html($item->post_title);
             
-            if ( !empty( $args['show_recurring'] ) ) {
-                $title .= wpinv_get_item_suffix( $item->ID, false );
+            if (!empty($args['show_recurring'])) {
+                $title .= wpinv_get_item_suffix($item->ID, false);
             }
             
-            $options[ absint( $item->ID ) ] = $title;
+            $options[absint($item->ID)] = $title;
         }
     }
 
     // This ensures that any selected items are included in the drop down
-    if( is_array( $args['selected'] ) ) {
-        foreach( $args['selected'] as $item ) {
-            if( ! in_array( $item, $options ) ) {
-                $title = get_the_title( $item );
-                if ( !empty( $args['show_recurring'] ) ) {
-                    $title .= wpinv_get_item_suffix( $item, false );
+    if (is_array($args['selected'])) {
+        foreach ($args['selected'] as $item) {
+            if (!in_array($item, $options)) {
+                $title = get_the_title($item);
+                if (!empty($args['show_recurring'])) {
+                    $title .= wpinv_get_item_suffix($item, false);
                 }
                 $options[$item] = $title;
             }
         }
-    } elseif ( is_numeric( $args['selected'] ) && $args['selected'] !== 0 ) {
-        if ( ! in_array( $args['selected'], $options ) ) {
-            $title = get_the_title( $args['selected'] );
-            if ( !empty( $args['show_recurring'] ) ) {
-                $title .= wpinv_get_item_suffix( $args['selected'], false );
+    } elseif (is_numeric($args['selected']) && $args['selected'] !== 0) {
+        if (!in_array($args['selected'], $options)) {
+            $title = get_the_title($args['selected']);
+            if (!empty($args['show_recurring'])) {
+                $title .= wpinv_get_item_suffix($args['selected'], false);
             }
-            $options[$args['selected']] = get_the_title( $args['selected'] );
+            $options[$args['selected']] = get_the_title($args['selected']);
         }
     }
 
-    $output = wpinv_html_select( array(
+    $output = wpinv_html_select(array(
         'name'             => $args['name'],
         'selected'         => $args['selected'],
         'id'               => $args['id'],
@@ -517,12 +517,12 @@ 
         'show_option_all'  => $args['show_option_all'],
         'show_option_none' => $args['show_option_none'],
         'data'             => $args['data'],
-    ) );
+    ));
 
     return $output;
 }
 
-function wpinv_html_checkbox( $args = array() ) {
+function wpinv_html_checkbox($args = array()) {
     $defaults = array(
         'name'     => null,
         'current'  => null,
@@ -533,38 +533,38 @@ 
         )
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
-    $class = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
+    $class = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
     $options = '';
-    if ( ! empty( $args['options']['disabled'] ) ) {
+    if (!empty($args['options']['disabled'])) {
         $options .= ' disabled="disabled"';
-    } elseif ( ! empty( $args['options']['readonly'] ) ) {
+    } elseif (!empty($args['options']['readonly'])) {
         $options .= ' readonly';
     }
 
-    $output = '<input type="checkbox"' . $options . ' name="' . esc_attr( $args['name'] ) . '" id="' . esc_attr( $args['name'] ) . '" class="' . $class . ' ' . esc_attr( $args['name'] ) . '" ' . checked( 1, $args['current'], false ) . ' />';
+    $output = '<input type="checkbox"' . $options . ' name="' . esc_attr($args['name']) . '" id="' . esc_attr($args['name']) . '" class="' . $class . ' ' . esc_attr($args['name']) . '" ' . checked(1, $args['current'], false) . ' />';
 
     return $output;
 }
 
-function wpinv_html_text( $args = array() ) {
+function wpinv_html_text($args = array()) {
     // Backwards compatibility
-    if ( func_num_args() > 1 ) {
+    if (func_num_args() > 1) {
         $args = func_get_args();
 
         $name  = $args[0];
-        $value = isset( $args[1] ) ? $args[1] : '';
-        $label = isset( $args[2] ) ? $args[2] : '';
-        $desc  = isset( $args[3] ) ? $args[3] : '';
+        $value = isset($args[1]) ? $args[1] : '';
+        $label = isset($args[2]) ? $args[2] : '';
+        $desc  = isset($args[3]) ? $args[3] : '';
     }
 
     $defaults = array(
         'id'           => '',
-        'name'         => isset( $name )  ? $name  : 'text',
-        'value'        => isset( $value ) ? $value : null,
-        'label'        => isset( $label ) ? $label : null,
-        'desc'         => isset( $desc )  ? $desc  : null,
+        'name'         => isset($name) ? $name : 'text',
+        'value'        => isset($value) ? $value : null,
+        'label'        => isset($label) ? $label : null,
+        'desc'         => isset($desc) ? $desc : null,
         'placeholder'  => '',
         'class'        => 'regular-text',
         'disabled'     => false,
@@ -574,51 +574,51 @@ 
         'data'         => false
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
-    $class = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
+    $class = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
     $options = '';
-    if( $args['required'] ) {
+    if ($args['required']) {
         $options .= ' required="required"';
     }
-    if( $args['readonly'] ) {
+    if ($args['readonly']) {
         $options .= ' readonly';
     }
-    if( $args['readonly'] ) {
+    if ($args['readonly']) {
         $options .= ' readonly';
     }
 
     $data = '';
-    if ( !empty( $args['data'] ) ) {
-        foreach ( $args['data'] as $key => $value ) {
-            $data .= 'data-' . wpinv_sanitize_key( $key ) . '="' . esc_attr( $value ) . '" ';
+    if (!empty($args['data'])) {
+        foreach ($args['data'] as $key => $value) {
+            $data .= 'data-' . wpinv_sanitize_key($key) . '="' . esc_attr($value) . '" ';
         }
     }
 
-    $output = '<span id="wpinv-' . wpinv_sanitize_key( $args['name'] ) . '-wrap">';
-    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key( $args['id'] ) . '">' . esc_html( $args['label'] ) . '</label>';
-    if ( ! empty( $args['desc'] ) ) {
-        $output .= '<span class="wpinv-description">' . esc_html( $args['desc'] ) . '</span>';
+    $output = '<span id="wpinv-' . wpinv_sanitize_key($args['name']) . '-wrap">';
+    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key($args['id']) . '">' . esc_html($args['label']) . '</label>';
+    if (!empty($args['desc'])) {
+        $output .= '<span class="wpinv-description">' . esc_html($args['desc']) . '</span>';
     }
 
-    $output .= '<input type="text" name="' . esc_attr( $args['name'] ) . '" id="' . esc_attr( $args['id'] )  . '" autocomplete="' . esc_attr( $args['autocomplete'] )  . '" value="' . esc_attr( $args['value'] ) . '" placeholder="' . esc_attr( $args['placeholder'] ) . '" class="' . $class . '" ' . $data . ' ' . trim( $options ) . '/>';
+    $output .= '<input type="text" name="' . esc_attr($args['name']) . '" id="' . esc_attr($args['id']) . '" autocomplete="' . esc_attr($args['autocomplete']) . '" value="' . esc_attr($args['value']) . '" placeholder="' . esc_attr($args['placeholder']) . '" class="' . $class . '" ' . $data . ' ' . trim($options) . '/>';
 
     $output .= '</span>';
 
     return $output;
 }
 
-function wpinv_html_date_field( $args = array() ) {
-    if( empty( $args['class'] ) ) {
+function wpinv_html_date_field($args = array()) {
+    if (empty($args['class'])) {
         $args['class'] = 'wpiDatepicker';
-    } elseif( ! strpos( $args['class'], 'wpiDatepicker' ) ) {
+    } elseif (!strpos($args['class'], 'wpiDatepicker')) {
         $args['class'] .= ' wpiDatepicker';
     }
 
-    return wpinv_html_text( $args );
+    return wpinv_html_text($args);
 }
 
-function wpinv_html_textarea( $args = array() ) {
+function wpinv_html_textarea($args = array()) {
     $defaults = array(
         'name'        => 'textarea',
         'value'       => null,
@@ -628,31 +628,31 @@ 
         'disabled'    => false
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
-    $class = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
+    $class = implode(' ', array_map('sanitize_html_class', explode(' ', $args['class'])));
     $disabled = '';
-    if( $args['disabled'] ) {
+    if ($args['disabled']) {
         $disabled = ' disabled="disabled"';
     }
 
-    $output = '<span id="wpinv-' . wpinv_sanitize_key( $args['name'] ) . '-wrap">';
-    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key( $args['name'] ) . '">' . esc_html( $args['label'] ) . '</label>';
-    $output .= '<textarea name="' . esc_attr( $args['name'] ) . '" id="' . wpinv_sanitize_key( $args['name'] ) . '" class="' . $class . '"' . $disabled . '>' . esc_attr( $args['value'] ) . '</textarea>';
+    $output = '<span id="wpinv-' . wpinv_sanitize_key($args['name']) . '-wrap">';
+    $output .= '<label class="wpinv-label" for="' . wpinv_sanitize_key($args['name']) . '">' . esc_html($args['label']) . '</label>';
+    $output .= '<textarea name="' . esc_attr($args['name']) . '" id="' . wpinv_sanitize_key($args['name']) . '" class="' . $class . '"' . $disabled . '>' . esc_attr($args['value']) . '</textarea>';
 
-    if ( ! empty( $args['desc'] ) ) {
-        $output .= '<span class="wpinv-description">' . esc_html( $args['desc'] ) . '</span>';
+    if (!empty($args['desc'])) {
+        $output .= '<span class="wpinv-description">' . esc_html($args['desc']) . '</span>';
     }
     $output .= '</span>';
 
     return $output;
 }
 
-function wpinv_html_ajax_user_search( $args = array() ) {
+function wpinv_html_ajax_user_search($args = array()) {
     $defaults = array(
         'name'        => 'user_id',
         'value'       => null,
-        'placeholder' => __( 'Enter username', 'invoicing' ),
+        'placeholder' => __('Enter username', 'invoicing'),
         'label'       => null,
         'desc'        => null,
         'class'       => '',
@@ -661,13 +661,13 @@ 
         'data'        => false
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
     $args['class'] = 'wpinv-ajax-user-search ' . $args['class'];
 
     $output  = '<span class="wpinv_user_search_wrap">';
-        $output .= wpinv_html_text( $args );
-        $output .= '<span class="wpinv_user_search_results hidden"><a class="wpinv-ajax-user-cancel" title="' . __( 'Cancel', 'invoicing' ) . '" aria-label="' . __( 'Cancel', 'invoicing' ) . '" href="#">x</a><span></span></span>';
+        $output .= wpinv_html_text($args);
+        $output .= '<span class="wpinv_user_search_results hidden"><a class="wpinv-ajax-user-cancel" title="' . __('Cancel', 'invoicing') . '" aria-label="' . __('Cancel', 'invoicing') . '" href="#">x</a><span></span></span>';
     $output .= '</span>';
 
     return $output;
@@ -676,7 +676,7 @@ 
 function wpinv_ip_geolocation() {
     global $wpinv_euvat;
     
-    $ip         = !empty( $_GET['ip'] ) ? sanitize_text_field( $_GET['ip'] ) : '';    
+    $ip         = !empty($_GET['ip']) ? sanitize_text_field($_GET['ip']) : '';    
     $content    = '';
     $iso        = '';
     $country    = '';
@@ -687,69 +687,69 @@ 
     $credit     = '';
     $address    = '';
     
-    if ( wpinv_get_option( 'vat_ip_lookup' ) == 'geoip2' && $geoip2_city = $wpinv_euvat->geoip2_city_record( $ip ) ) {
+    if (wpinv_get_option('vat_ip_lookup') == 'geoip2' && $geoip2_city = $wpinv_euvat->geoip2_city_record($ip)) {
         try {
             $iso        = $geoip2_city->country->isoCode;
             $country    = $geoip2_city->country->name;
-            $region     = !empty( $geoip2_city->subdivisions ) && !empty( $geoip2_city->subdivisions[0]->name ) ? $geoip2_city->subdivisions[0]->name : '';
+            $region     = !empty($geoip2_city->subdivisions) && !empty($geoip2_city->subdivisions[0]->name) ? $geoip2_city->subdivisions[0]->name : '';
             $city       = $geoip2_city->city->name;
             $longitude  = $geoip2_city->location->longitude;
             $latitude   = $geoip2_city->location->latitude;
-            $credit     = __( 'Geolocated using the information by MaxMind, available from <a href="http://www.maxmind.com" target="_blank">www.maxmind.com</a>', 'invoicing' );
-        } catch( Exception $e ) { }
+            $credit     = __('Geolocated using the information by MaxMind, available from <a href="http://www.maxmind.com" target="_blank">www.maxmind.com</a>', 'invoicing');
+        } catch (Exception $e) { }
     }
     
-    if ( !( $iso && $longitude && $latitude ) && function_exists( 'simplexml_load_file' ) ) {
+    if (!($iso && $longitude && $latitude) && function_exists('simplexml_load_file')) {
         try {
-            $load_xml = simplexml_load_file( 'http://www.geoplugin.net/xml.gp?ip=' . $ip );
+            $load_xml = simplexml_load_file('http://www.geoplugin.net/xml.gp?ip=' . $ip);
             
-            if ( !empty( $load_xml ) && isset( $load_xml->geoplugin_countryCode ) && !empty( $load_xml->geoplugin_latitude ) && !empty( $load_xml->geoplugin_longitude ) ) {
+            if (!empty($load_xml) && isset($load_xml->geoplugin_countryCode) && !empty($load_xml->geoplugin_latitude) && !empty($load_xml->geoplugin_longitude)) {
                 $iso        = $load_xml->geoplugin_countryCode;
                 $country    = $load_xml->geoplugin_countryName;
-                $region     = !empty( $load_xml->geoplugin_regionName ) ? $load_xml->geoplugin_regionName : '';
-                $city       = !empty( $load_xml->geoplugin_city ) ? $load_xml->geoplugin_city : '';
+                $region     = !empty($load_xml->geoplugin_regionName) ? $load_xml->geoplugin_regionName : '';
+                $city       = !empty($load_xml->geoplugin_city) ? $load_xml->geoplugin_city : '';
                 $longitude  = $load_xml->geoplugin_longitude;
                 $latitude   = $load_xml->geoplugin_latitude;
                 $credit     = $load_xml->geoplugin_credit;
-                $credit     = __( 'Geolocated using the information by geoPlugin, available from <a href="http://www.geoplugin.com" target="_blank">www.geoplugin.com</a>', 'invoicing' ) . '<br>' . $load_xml->geoplugin_credit;
+                $credit     = __('Geolocated using the information by geoPlugin, available from <a href="http://www.geoplugin.com" target="_blank">www.geoplugin.com</a>', 'invoicing') . '<br>' . $load_xml->geoplugin_credit;
             }
-        } catch( Exception $e ) { }
+        } catch (Exception $e) { }
     }
     
-    if ( $iso && $longitude && $latitude ) {
-        if ( $city ) {
+    if ($iso && $longitude && $latitude) {
+        if ($city) {
             $address .= $city . ', ';
         }
         
-        if ( $region ) {
+        if ($region) {
             $address .= $region . ', ';
         }
         
         $address .= $country . ' (' . $iso . ')';
-        $content = '<p>'. sprintf( __( '<b>Address:</b> %s', 'invoicing' ), $address ) . '</p>';
-        $content .= '<p>'. $credit . '</p>';
+        $content = '<p>' . sprintf(__('<b>Address:</b> %s', 'invoicing'), $address) . '</p>';
+        $content .= '<p>' . $credit . '</p>';
     } else {
-        $content = '<p>'. sprintf( __( 'Unable to find geolocation for the IP address: %s', 'invoicing' ), $ip ) . '</p>';
+        $content = '<p>' . sprintf(__('Unable to find geolocation for the IP address: %s', 'invoicing'), $ip) . '</p>';
     }
     ?>
 <!DOCTYPE html>
-<html><head><title><?php echo sprintf( __( 'IP: %s', 'invoicing' ), $ip );?></title><meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.0-rc.1/leaflet.css" /><style>html,body{height:100%;margin:0;padding:0;width:100%}body{text-align:center;background:#fff;color:#222;font-size:small;}body,p{font-family: arial,sans-serif}#map{margin:auto;width:100%;height:calc(100% - 120px);min-height:240px}</style></head>
+<html><head><title><?php echo sprintf(__('IP: %s', 'invoicing'), $ip); ?></title><meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.0-rc.1/leaflet.css" /><style>html,body{height:100%;margin:0;padding:0;width:100%}body{text-align:center;background:#fff;color:#222;font-size:small;}body,p{font-family: arial,sans-serif}#map{margin:auto;width:100%;height:calc(100% - 120px);min-height:240px}</style></head>
 <body>
-    <?php if ( $latitude && $latitude ) { ?>
+    <?php if ($latitude && $latitude) { ?>
     <div id="map"></div>
         <script src="//cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.0-rc.1/leaflet.js"></script>
         <script type="text/javascript">
         var osmUrl = 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
             osmAttrib = '&copy; <a href="http://openstreetmap.org/copyright">OpenStreetMap</a> contributors',
             osm = L.tileLayer(osmUrl, {maxZoom: 18, attribution: osmAttrib}),
-            latlng = new L.LatLng(<?php echo $latitude;?>, <?php echo $longitude;?>);
+            latlng = new L.LatLng(<?php echo $latitude; ?>, <?php echo $longitude; ?>);
 
         var map = new L.Map('map', {center: latlng, zoom: 12, layers: [osm]});
 
         var marker = new L.Marker(latlng);
         map.addLayer(marker);
 
-        marker.bindPopup("<p><?php esc_attr_e( $address );?></p>");
+        marker.bindPopup("<p><?php esc_attr_e($address); ?></p>");
     </script>
     <?php } ?>
     <div style="height:100px"><?php echo $content; ?></div>
@@ -757,18 +757,18 @@ 
 <?php
     exit;
 }
-add_action( 'wp_ajax_wpinv_ip_geolocation', 'wpinv_ip_geolocation' );
-add_action( 'wp_ajax_nopriv_wpinv_ip_geolocation', 'wpinv_ip_geolocation' );
+add_action('wp_ajax_wpinv_ip_geolocation', 'wpinv_ip_geolocation');
+add_action('wp_ajax_nopriv_wpinv_ip_geolocation', 'wpinv_ip_geolocation');
 
 // Set up the template for the invoice.
-function wpinv_template( $template ) {
+function wpinv_template($template) {
     global $post, $wp_query;
     
-    if ( ( is_single() || is_404() ) && !empty( $post->ID ) && (get_post_type( $post->ID ) == 'wpi_invoice' or get_post_type( $post->ID ) == 'wpi_quote')) {
-        if ( wpinv_user_can_view_invoice( $post->ID ) ) {
-            $template = wpinv_get_template_part( 'wpinv-invoice-print', false, false );
+    if ((is_single() || is_404()) && !empty($post->ID) && (get_post_type($post->ID) == 'wpi_invoice' or get_post_type($post->ID) == 'wpi_quote')) {
+        if (wpinv_user_can_view_invoice($post->ID)) {
+            $template = wpinv_get_template_part('wpinv-invoice-print', false, false);
         } else {
-            $template = wpinv_get_template_part( 'wpinv-invalid-access', false, false );
+            $template = wpinv_get_template_part('wpinv-invalid-access', false, false);
         }
     }
 
@@ -777,7 +777,7 @@ 
 
 function wpinv_get_business_address() {
     $business_address   = wpinv_store_address();
-    $business_address   = !empty( $business_address ) ? wpautop( wp_kses_post( $business_address ) ) : '';
+    $business_address   = !empty($business_address) ? wpautop(wp_kses_post($business_address)) : '';
     
     /*
     $default_country    = wpinv_get_default_country();
@@ -801,7 +801,7 @@ 
     
     $business_address = $business_address ? '<div class="address">' . $business_address . '</div>' : '';
     
-    return apply_filters( 'wpinv_get_business_address', $business_address );
+    return apply_filters('wpinv_get_business_address', $business_address);
 }
 
 function wpinv_display_from_address() {
@@ -811,187 +811,187 @@ 
     if (empty($from_name)) {
         $from_name = wpinv_get_business_name();
     }
-    ?><div class="from col-xs-2"><strong><?php _e( 'From:', 'invoicing' ) ?></strong></div>
+    ?><div class="from col-xs-2"><strong><?php _e('From:', 'invoicing') ?></strong></div>
     <div class="wrapper col-xs-10">
-        <div class="name"><?php echo esc_html( $from_name ); ?></div>
-        <?php if ( $address = wpinv_get_business_address() ) { ?>
-        <div class="address"><?php echo wpautop( wp_kses_post( $address ) );?></div>
+        <div class="name"><?php echo esc_html($from_name); ?></div>
+        <?php if ($address = wpinv_get_business_address()) { ?>
+        <div class="address"><?php echo wpautop(wp_kses_post($address)); ?></div>
         <?php } ?>
-        <?php if ( $email_from = wpinv_mail_get_from_address() ) { ?>
-        <div class="email_from"><?php echo wp_sprintf( __( 'Email: %s', 'invoicing' ), $email_from );?></div>
+        <?php if ($email_from = wpinv_mail_get_from_address()) { ?>
+        <div class="email_from"><?php echo wp_sprintf(__('Email: %s', 'invoicing'), $email_from); ?></div>
         <?php } ?>
     </div>
     <?php
 }
 
-function wpinv_watermark( $id = 0 ) {
-    $output = wpinv_get_watermark( $id );
+function wpinv_watermark($id = 0) {
+    $output = wpinv_get_watermark($id);
     
-    return apply_filters( 'wpinv_get_watermark', $output, $id );
+    return apply_filters('wpinv_get_watermark', $output, $id);
 }
 
-function wpinv_get_watermark( $id ) {
-    if ( !$id > 0 ) {
+function wpinv_get_watermark($id) {
+    if (!$id > 0) {
         return NULL;
     }
-    $invoice = wpinv_get_invoice( $id );
+    $invoice = wpinv_get_invoice($id);
     
-    if ( !empty( $invoice ) && "wpi_invoice" === $invoice->post_type ) {
-        if ( $invoice->is_paid() ) {
-            return __( 'Paid', 'invoicing' );
+    if (!empty($invoice) && "wpi_invoice" === $invoice->post_type) {
+        if ($invoice->is_paid()) {
+            return __('Paid', 'invoicing');
         }
-        if ( $invoice->is_refunded() ) {
-            return __( 'Refunded', 'invoicing' );
+        if ($invoice->is_refunded()) {
+            return __('Refunded', 'invoicing');
         }
-        if ( $invoice->has_status( array( 'wpi-cancelled' ) ) ) {
-            return __( 'Cancelled', 'invoicing' );
+        if ($invoice->has_status(array('wpi-cancelled'))) {
+            return __('Cancelled', 'invoicing');
         }
     }
     
     return NULL;
 }
 
-function wpinv_display_invoice_details( $invoice ) {
+function wpinv_display_invoice_details($invoice) {
     global $wpinv_euvat;
     
     $invoice_id = $invoice->ID;
     $vat_name   = $wpinv_euvat->get_vat_name();
     $use_taxes  = wpinv_use_taxes();
     
-    $invoice_status = wpinv_get_invoice_status( $invoice_id );
+    $invoice_status = wpinv_get_invoice_status($invoice_id);
     ?>
     <table class="table table-bordered table-sm">
-        <?php if ( $invoice_number = wpinv_get_invoice_number( $invoice_id ) ) { ?>
+        <?php if ($invoice_number = wpinv_get_invoice_number($invoice_id)) { ?>
             <tr class="wpi-row-number">
-                <th><?php echo apply_filters( 'wpinv_invoice_number_label', __( 'Invoice Number', 'invoicing' ), $invoice ); ?></th>
-                <td><?php echo esc_html( $invoice_number ); ?></td>
+                <th><?php echo apply_filters('wpinv_invoice_number_label', __('Invoice Number', 'invoicing'), $invoice); ?></th>
+                <td><?php echo esc_html($invoice_number); ?></td>
             </tr>
         <?php } ?>
         <tr class="wpi-row-status">
-            <th><?php echo apply_filters( 'wpinv_invoice_status_label', __( 'Invoice Status', 'invoicing' ), $invoice ); ?></th>
-            <td><?php echo wpinv_invoice_status_label( $invoice_status, wpinv_get_invoice_status( $invoice_id, true ) ); ?></td>
+            <th><?php echo apply_filters('wpinv_invoice_status_label', __('Invoice Status', 'invoicing'), $invoice); ?></th>
+            <td><?php echo wpinv_invoice_status_label($invoice_status, wpinv_get_invoice_status($invoice_id, true)); ?></td>
         </tr>
-        <?php if ( $invoice->is_renewal() ) { ?>
+        <?php if ($invoice->is_renewal()) { ?>
         <tr class="wpi-row-parent">
-            <th><?php echo apply_filters( 'wpinv_invoice_parent_invoice_label', __( 'Parent Invoice', 'invoicing' ), $invoice ); ?></th>
-            <td><?php echo wpinv_invoice_link( $invoice->parent_invoice ); ?></td>
+            <th><?php echo apply_filters('wpinv_invoice_parent_invoice_label', __('Parent Invoice', 'invoicing'), $invoice); ?></th>
+            <td><?php echo wpinv_invoice_link($invoice->parent_invoice); ?></td>
         </tr>
         <?php } ?>
-        <?php if ( $gateway_name = wpinv_get_payment_gateway_name( $invoice_id ) ) { ?>
+        <?php if ($gateway_name = wpinv_get_payment_gateway_name($invoice_id)) { ?>
             <tr class="wpi-row-gateway">
-                <th><?php echo apply_filters( 'wpinv_invoice_payment_method_label', __( 'Payment Method', 'invoicing' ), $invoice ); ?></th>
+                <th><?php echo apply_filters('wpinv_invoice_payment_method_label', __('Payment Method', 'invoicing'), $invoice); ?></th>
                 <td><?php echo $gateway_name; ?></td>
             </tr>
         <?php } ?>
-        <?php if ( $invoice_date = wpinv_get_invoice_date( $invoice_id ) ) { ?>
+        <?php if ($invoice_date = wpinv_get_invoice_date($invoice_id)) { ?>
             <tr class="wpi-row-date">
-                <th><?php echo apply_filters( 'wpinv_invoice_date_label', __( 'Invoice Date', 'invoicing' ), $invoice ); ?></th>
+                <th><?php echo apply_filters('wpinv_invoice_date_label', __('Invoice Date', 'invoicing'), $invoice); ?></th>
                 <td><?php echo $invoice_date; ?></td>
             </tr>
         <?php } ?>
-        <?php if ( wpinv_get_option( 'overdue_active' ) && $invoice->needs_payment() && ( $due_date = $invoice->get_due_date( true ) ) ) { ?>
+        <?php if (wpinv_get_option('overdue_active') && $invoice->needs_payment() && ($due_date = $invoice->get_due_date(true))) { ?>
             <tr class="wpi-row-date">
-                <th><?php echo apply_filters( 'wpinv_invoice_due_date_label', __( 'Due Date', 'invoicing' ), $invoice ); ?></th>
+                <th><?php echo apply_filters('wpinv_invoice_due_date_label', __('Due Date', 'invoicing'), $invoice); ?></th>
                 <td><?php echo $due_date; ?></td>
             </tr>
         <?php } ?>
-        <?php if ( $owner_vat_number = $wpinv_euvat->get_vat_number() ) { ?>
+        <?php if ($owner_vat_number = $wpinv_euvat->get_vat_number()) { ?>
             <tr class="wpi-row-ovatno">
-                <th><?php echo apply_filters( 'wpinv_invoice_owner_vat_number_label', wp_sprintf( __( 'Owner %s Number', 'invoicing' ), $vat_name ), $invoice, $vat_name ); ?></th>
+                <th><?php echo apply_filters('wpinv_invoice_owner_vat_number_label', wp_sprintf(__('Owner %s Number', 'invoicing'), $vat_name), $invoice, $vat_name); ?></th>
                 <td><?php echo $owner_vat_number; ?></td>
             </tr>
         <?php } ?>
-        <?php if ( $use_taxes && $user_vat_number = wpinv_get_invoice_vat_number( $invoice_id ) ) { ?>
+        <?php if ($use_taxes && $user_vat_number = wpinv_get_invoice_vat_number($invoice_id)) { ?>
             <tr class="wpi-row-uvatno">
-                <th><?php echo apply_filters( 'wpinv_invoice_user_vat_number_label', wp_sprintf( __( 'Invoice %s Number', 'invoicing' ), $vat_name ), $invoice, $vat_name ); ?></th>
+                <th><?php echo apply_filters('wpinv_invoice_user_vat_number_label', wp_sprintf(__('Invoice %s Number', 'invoicing'), $vat_name), $invoice, $vat_name); ?></th>
                 <td><?php echo $user_vat_number; ?></td>
             </tr>
         <?php } ?>
         <tr class="table-active tr-total wpi-row-total">
-            <th><strong><?php _e( 'Total Amount', 'invoicing' ) ?></strong></th>
-            <td><strong><?php echo wpinv_payment_total( $invoice_id, true ); ?></strong></td>
+            <th><strong><?php _e('Total Amount', 'invoicing') ?></strong></th>
+            <td><strong><?php echo wpinv_payment_total($invoice_id, true); ?></strong></td>
         </tr>
     </table>
 <?php
 }
 
-function wpinv_display_to_address( $invoice_id = 0 ) {
-    $invoice = wpinv_get_invoice( $invoice_id );
+function wpinv_display_to_address($invoice_id = 0) {
+    $invoice = wpinv_get_invoice($invoice_id);
     
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return NULL;
     }
     
     $billing_details = $invoice->get_user_info();
-    $output = '<div class="to col-xs-2"><strong>' . __( 'To:', 'invoicing' ) . '</strong></div>';
+    $output = '<div class="to col-xs-2"><strong>' . __('To:', 'invoicing') . '</strong></div>';
     $output .= '<div class="wrapper col-xs-10">';
     
     ob_start();
-    do_action( 'wpinv_display_to_address_top', $invoice );
+    do_action('wpinv_display_to_address_top', $invoice);
     $output .= ob_get_clean();
     
-    $output .= '<div class="name">' . esc_html( trim( $billing_details['first_name'] . ' ' . $billing_details['last_name'] ) ) . '</div>';
-    if ( $company = $billing_details['company'] ) {
-        $output .= '<div class="company">' . wpautop( wp_kses_post( $company ) ) . '</div>';
+    $output .= '<div class="name">' . esc_html(trim($billing_details['first_name'] . ' ' . $billing_details['last_name'])) . '</div>';
+    if ($company = $billing_details['company']) {
+        $output .= '<div class="company">' . wpautop(wp_kses_post($company)) . '</div>';
     }
     $address_row = '';
-    if ( $address = $billing_details['address'] ) {
-        $address_row .= wpautop( wp_kses_post( $address ) );
+    if ($address = $billing_details['address']) {
+        $address_row .= wpautop(wp_kses_post($address));
     }
     
     $address_fields = array();
-    if ( !empty( $billing_details['city'] ) ) {
+    if (!empty($billing_details['city'])) {
         $address_fields[] = $billing_details['city'];
     }
     
-    $billing_country = !empty( $billing_details['country'] ) ? $billing_details['country'] : '';
-    if ( !empty( $billing_details['state'] ) ) {
-        $address_fields[] = wpinv_state_name( $billing_details['state'], $billing_country );
+    $billing_country = !empty($billing_details['country']) ? $billing_details['country'] : '';
+    if (!empty($billing_details['state'])) {
+        $address_fields[] = wpinv_state_name($billing_details['state'], $billing_country);
     }
     
-    if ( !empty( $billing_country ) ) {
-        $address_fields[] = wpinv_country_name( $billing_country );
+    if (!empty($billing_country)) {
+        $address_fields[] = wpinv_country_name($billing_country);
     }
     
-    if ( !empty( $address_fields ) ) {
-        $address_fields = implode( ", ", $address_fields );
+    if (!empty($address_fields)) {
+        $address_fields = implode(", ", $address_fields);
         
-        if ( !empty( $billing_details['zip'] ) ) {
+        if (!empty($billing_details['zip'])) {
             $address_fields .= ' ' . $billing_details['zip'];
         }
         
-        $address_row .= wpautop( wp_kses_post( $address_fields ) );
+        $address_row .= wpautop(wp_kses_post($address_fields));
     }
     
-    if ( $address_row ) {
+    if ($address_row) {
         $output .= '<div class="address">' . $address_row . '</div>';
     }
     
-    if ( $phone = $invoice->get_phone() ) {
-        $output .= '<div class="phone">' . wp_sprintf( __( 'Phone: %s', 'invoicing' ), esc_html( $phone ) ) . '</div>';
+    if ($phone = $invoice->get_phone()) {
+        $output .= '<div class="phone">' . wp_sprintf(__('Phone: %s', 'invoicing'), esc_html($phone)) . '</div>';
     }
-    if ( $email = $invoice->get_email() ) {
-        $output .= '<div class="email">' . wp_sprintf( __( 'Email: %s' , 'invoicing'), esc_html( $email ) ) . '</div>';
+    if ($email = $invoice->get_email()) {
+        $output .= '<div class="email">' . wp_sprintf(__('Email: %s', 'invoicing'), esc_html($email)) . '</div>';
     }
     
     ob_start();
-    do_action( 'wpinv_display_to_address_bottom', $invoice );
+    do_action('wpinv_display_to_address_bottom', $invoice);
     $output .= ob_get_clean();
     
     $output .= '</div>';
-    $output = apply_filters( 'wpinv_display_to_address', $output, $invoice );
+    $output = apply_filters('wpinv_display_to_address', $output, $invoice);
 
     echo $output;
 }
 
-function wpinv_display_line_items( $invoice_id = 0 ) {
+function wpinv_display_line_items($invoice_id = 0) {
     global $wpinv_euvat, $ajax_cart_details;
-    $invoice            = wpinv_get_invoice( $invoice_id );
+    $invoice            = wpinv_get_invoice($invoice_id);
     $quantities_enabled = wpinv_item_quantities_enabled();
     $use_taxes          = wpinv_use_taxes();
     $zero_tax           = !(float)$invoice->get_tax() > 0 ? true : false;
-    $tax_label           = $use_taxes && $invoice->has_vat() ? $wpinv_euvat->get_vat_name() : __( 'Tax', 'invoicing' );
-    $tax_title          = !$zero_tax && $use_taxes ? ( wpinv_prices_include_tax() ? wp_sprintf( __( '(%s Incl.)', 'invoicing' ), $tax_label ) : wp_sprintf( __( '(%s Excl.)', 'invoicing' ), $tax_label ) ) : '';
+    $tax_label = $use_taxes && $invoice->has_vat() ? $wpinv_euvat->get_vat_name() : __('Tax', 'invoicing');
+    $tax_title          = !$zero_tax && $use_taxes ? (wpinv_prices_include_tax() ? wp_sprintf(__('(%s Incl.)', 'invoicing'), $tax_label) : wp_sprintf(__('(%s Excl.)', 'invoicing'), $tax_label)) : '';
     
     $cart_details       = $invoice->get_cart_details();
     $ajax_cart_details  = $cart_details;
@@ -1000,64 +1000,64 @@ 
     <table class="table table-sm table-bordered table-responsive">
         <thead>
             <tr>
-                <th class="name"><strong><?php _e( "Item Name", "invoicing" );?></strong></th>
-                <th class="rate"><strong><?php _e( "Price", "invoicing" );?></strong></th>
+                <th class="name"><strong><?php _e("Item Name", "invoicing"); ?></strong></th>
+                <th class="rate"><strong><?php _e("Price", "invoicing"); ?></strong></th>
                 <?php if ($quantities_enabled) { ?>
-                    <th class="qty"><strong><?php _e( "Qty", "invoicing" );?></strong></th>
+                    <th class="qty"><strong><?php _e("Qty", "invoicing"); ?></strong></th>
                 <?php } ?>
                 <?php if ($use_taxes && !$zero_tax) { ?>
                     <th class="tax"><strong><?php echo $tax_label . ' <span class="normal small">(%)</span>'; ?></strong></th>
                 <?php } ?>
-                <th class="total"><strong><?php echo __( "Item Total", "invoicing" ) . ' <span class="normal small">' . $tax_title . '<span>';?></strong></th>
+                <th class="total"><strong><?php echo __("Item Total", "invoicing") . ' <span class="normal small">' . $tax_title . '<span>'; ?></strong></th>
             </tr>
         </thead>
         <tbody>
         <?php 
-            if ( !empty( $cart_details ) ) {
-                do_action( 'wpinv_display_line_items_start', $invoice );
+            if (!empty($cart_details)) {
+                do_action('wpinv_display_line_items_start', $invoice);
                 
                 $count = 0;
                 $cols  = 3;
-                foreach ( $cart_details as $key => $cart_item ) {
-                    $item_id    = !empty($cart_item['id']) ? absint( $cart_item['id'] ) : '';
-                    $item_price = isset($cart_item["item_price"]) ? wpinv_round_amount( $cart_item["item_price"] ) : 0;
-                    $line_total = isset($cart_item["subtotal"]) ? wpinv_round_amount( $cart_item["subtotal"] ) : 0;
-                    $quantity   = !empty($cart_item['quantity']) && (int)$cart_item['quantity'] > 0 ? absint( $cart_item['quantity'] ) : 1;
+                foreach ($cart_details as $key => $cart_item) {
+                    $item_id    = !empty($cart_item['id']) ? absint($cart_item['id']) : '';
+                    $item_price = isset($cart_item["item_price"]) ? wpinv_round_amount($cart_item["item_price"]) : 0;
+                    $line_total = isset($cart_item["subtotal"]) ? wpinv_round_amount($cart_item["subtotal"]) : 0;
+                    $quantity   = !empty($cart_item['quantity']) && (int)$cart_item['quantity'] > 0 ? absint($cart_item['quantity']) : 1;
                     
-                    $item       = $item_id ? new WPInv_Item( $item_id ) : NULL;
+                    $item       = $item_id ? new WPInv_Item($item_id) : NULL;
                     $summary    = '';
                     $cols       = 3;
-                    if ( !empty($item) ) {
+                    if (!empty($item)) {
                         $item_name  = $item->get_name();
                         $summary    = $item->get_summary();
                     }
-                    $item_name  = !empty($cart_item['name']) ? $cart_item['name'] : $item_name;
+                    $item_name = !empty($cart_item['name']) ? $cart_item['name'] : $item_name;
                     
-                    $summary = apply_filters( 'wpinv_print_invoice_line_item_summary', $summary, $cart_item, $item, $invoice );
+                    $summary = apply_filters('wpinv_print_invoice_line_item_summary', $summary, $cart_item, $item, $invoice);
                     
                     $item_tax       = '';
                     $tax_rate       = '';
-                    if ( $use_taxes && $cart_item['tax'] > 0 && $cart_item['subtotal'] > 0 ) {
-                        $item_tax = wpinv_price( wpinv_format_amount( $cart_item['tax'] ), $invoice->get_currency() );
-                        $tax_rate = !empty( $cart_item['vat_rate'] ) ? $cart_item['vat_rate'] : ( $cart_item['tax'] / $cart_item['subtotal'] ) * 100;
-                        $tax_rate = $tax_rate > 0 ? (float)wpinv_round_amount( $tax_rate, 4 ) : '';
+                    if ($use_taxes && $cart_item['tax'] > 0 && $cart_item['subtotal'] > 0) {
+                        $item_tax = wpinv_price(wpinv_format_amount($cart_item['tax']), $invoice->get_currency());
+                        $tax_rate = !empty($cart_item['vat_rate']) ? $cart_item['vat_rate'] : ($cart_item['tax'] / $cart_item['subtotal']) * 100;
+                        $tax_rate = $tax_rate > 0 ? (float)wpinv_round_amount($tax_rate, 4) : '';
                         $tax_rate = $tax_rate != '' ? ' <small class="tax-rate">(' . $tax_rate . '%)</small>' : '';
                     }
                     
                     $line_item_tax = $item_tax . $tax_rate;
                     
-                    if ( $line_item_tax === '' ) {
+                    if ($line_item_tax === '') {
                         $line_item_tax = 0; // Zero tax
                     }
                     
-                    $line_item = '<tr class="row-' . ( ($count % 2 == 0) ? 'even' : 'odd' ) . ' wpinv-item">';
-                        $line_item .= '<td class="name">' . esc_html__( $item_name, 'invoicing' ) . wpinv_get_item_suffix( $item );
-                        if ( $summary !== '' ) {
-                            $line_item .= '<br/><small class="meta">' . wpautop( wp_kses_post( $summary ) ) . '</small>';
+                    $line_item = '<tr class="row-' . (($count % 2 == 0) ? 'even' : 'odd') . ' wpinv-item">';
+                        $line_item .= '<td class="name">' . esc_html__($item_name, 'invoicing') . wpinv_get_item_suffix($item);
+                        if ($summary !== '') {
+                            $line_item .= '<br/><small class="meta">' . wpautop(wp_kses_post($summary)) . '</small>';
                         }
                         $line_item .= '</td>';
                         
-                        $line_item .= '<td class="rate">' . esc_html__( wpinv_price( wpinv_format_amount( $item_price ), $invoice->get_currency() ) ) . '</td>';
+                        $line_item .= '<td class="rate">' . esc_html__(wpinv_price(wpinv_format_amount($item_price), $invoice->get_currency())) . '</td>';
                         if ($quantities_enabled) {
                             $cols++;
                             $line_item .= '<td class="qty">' . $quantity . '</td>';
@@ -1066,55 +1066,55 @@ 
                             $cols++;
                             $line_item .= '<td class="tax">' . $line_item_tax . '</td>';
                         }
-                        $line_item .= '<td class="total">' . esc_html__( wpinv_price( wpinv_format_amount( $line_total ), $invoice->get_currency() ) ) . '</td>';
+                        $line_item .= '<td class="total">' . esc_html__(wpinv_price(wpinv_format_amount($line_total), $invoice->get_currency())) . '</td>';
                     $line_item .= '</tr>';
                     
-                    echo apply_filters( 'wpinv_display_line_item', $line_item, $cart_item, $invoice, $cols );
+                    echo apply_filters('wpinv_display_line_item', $line_item, $cart_item, $invoice, $cols);
 
                     $count++;
                 }
                 
-                do_action( 'wpinv_display_before_subtotal', $invoice, $cols );
+                do_action('wpinv_display_before_subtotal', $invoice, $cols);
                 ?>
                 <tr class="row-sub-total row_odd">
-                    <td class="rate" colspan="<?php echo ( $cols - 1 ); ?>"><?php echo apply_filters( 'wpinv_print_cart_subtotal_label', '<strong>' . __( 'Sub Total', 'invoicing' ) . ':</strong>', $invoice ); ?></td>
-                    <td class="total"><strong><?php _e( wpinv_subtotal( $invoice_id, true ) ) ?></strong></td>
+                    <td class="rate" colspan="<?php echo ($cols - 1); ?>"><?php echo apply_filters('wpinv_print_cart_subtotal_label', '<strong>' . __('Sub Total', 'invoicing') . ':</strong>', $invoice); ?></td>
+                    <td class="total"><strong><?php _e(wpinv_subtotal($invoice_id, true)) ?></strong></td>
                 </tr>
                 <?php
-                do_action( 'wpinv_display_after_subtotal', $invoice, $cols );
+                do_action('wpinv_display_after_subtotal', $invoice, $cols);
                 
-                if ( wpinv_discount( $invoice_id, false ) > 0 ) {
-                    do_action( 'wpinv_display_before_discount', $invoice, $cols );
+                if (wpinv_discount($invoice_id, false) > 0) {
+                    do_action('wpinv_display_before_discount', $invoice, $cols);
                     ?>
                         <tr class="row-discount">
-                            <td class="rate" colspan="<?php echo ( $cols - 1 ); ?>"><?php wpinv_get_discount_label( wpinv_discount_code( $invoice_id ) ); ?>:</td>
-                            <td class="total"><?php echo wpinv_discount( $invoice_id, true, true ); ?></td>
+                            <td class="rate" colspan="<?php echo ($cols - 1); ?>"><?php wpinv_get_discount_label(wpinv_discount_code($invoice_id)); ?>:</td>
+                            <td class="total"><?php echo wpinv_discount($invoice_id, true, true); ?></td>
                         </tr>
                     <?php
-                    do_action( 'wpinv_display_after_discount', $invoice, $cols );
+                    do_action('wpinv_display_after_discount', $invoice, $cols);
                 }
                 
-                if ( $use_taxes ) {
-                    do_action( 'wpinv_display_before_tax', $invoice, $cols );
+                if ($use_taxes) {
+                    do_action('wpinv_display_before_tax', $invoice, $cols);
                     ?>
                     <tr class="row-tax">
-                        <td class="rate" colspan="<?php echo ( $cols - 1 ); ?>"><?php echo apply_filters( 'wpinv_print_cart_tax_label', '<strong>' . $tax_label . ':</strong>', $invoice ); ?></td>
-                        <td class="total"><?php _e( wpinv_tax( $invoice_id, true ) ) ?></td>
+                        <td class="rate" colspan="<?php echo ($cols - 1); ?>"><?php echo apply_filters('wpinv_print_cart_tax_label', '<strong>' . $tax_label . ':</strong>', $invoice); ?></td>
+                        <td class="total"><?php _e(wpinv_tax($invoice_id, true)) ?></td>
                     </tr>
                     <?php
-                    do_action( 'wpinv_display_after_tax', $invoice, $cols );
+                    do_action('wpinv_display_after_tax', $invoice, $cols);
                 }
                 
-                do_action( 'wpinv_display_before_total', $invoice, $cols );
+                do_action('wpinv_display_before_total', $invoice, $cols);
                 ?>
                 <tr class="table-active row-total">
-                    <td class="rate" colspan="<?php echo ( $cols - 1 ); ?>"><?php echo apply_filters( 'wpinv_print_cart_total_label', '<strong>' . __( 'Total', 'invoicing' ) . ':</strong>', $invoice ); ?></td>
-                    <td class="total"><strong><?php _e( wpinv_payment_total( $invoice_id, true ) ) ?></strong></td>
+                    <td class="rate" colspan="<?php echo ($cols - 1); ?>"><?php echo apply_filters('wpinv_print_cart_total_label', '<strong>' . __('Total', 'invoicing') . ':</strong>', $invoice); ?></td>
+                    <td class="total"><strong><?php _e(wpinv_payment_total($invoice_id, true)) ?></strong></td>
                 </tr>
                 <?php
-                do_action( 'wpinv_display_after_total', $invoice, $cols );
+                do_action('wpinv_display_after_total', $invoice, $cols);
                 
-                do_action( 'wpinv_display_line_end', $invoice, $cols );
+                do_action('wpinv_display_line_end', $invoice, $cols);
             }
         ?>
         </tbody>
@@ -1123,35 +1123,35 @@ 
     echo ob_get_clean();
 }
 
-function wpinv_display_invoice_totals( $invoice_id = 0 ) {    
+function wpinv_display_invoice_totals($invoice_id = 0) {    
     $use_taxes = wpinv_use_taxes();
     
-    do_action( 'wpinv_before_display_totals_table', $invoice_id ); 
+    do_action('wpinv_before_display_totals_table', $invoice_id); 
     ?>
     <table class="table table-sm table-bordered table-responsive">
         <tbody>
-            <?php do_action( 'wpinv_before_display_totals' ); ?>
+            <?php do_action('wpinv_before_display_totals'); ?>
             <tr class="row-sub-total">
-                <td class="rate"><strong><?php _e( 'Sub Total', 'invoicing' ); ?></strong></td>
-                <td class="total"><strong><?php _e( wpinv_subtotal( $invoice_id, true ) ) ?></strong></td>
+                <td class="rate"><strong><?php _e('Sub Total', 'invoicing'); ?></strong></td>
+                <td class="total"><strong><?php _e(wpinv_subtotal($invoice_id, true)) ?></strong></td>
             </tr>
-            <?php do_action( 'wpinv_after_display_totals' ); ?>
-            <?php if ( wpinv_discount( $invoice_id, false ) > 0 ) { ?>
+            <?php do_action('wpinv_after_display_totals'); ?>
+            <?php if (wpinv_discount($invoice_id, false) > 0) { ?>
                 <tr class="row-discount">
-                    <td class="rate"><?php wpinv_get_discount_label( wpinv_discount_code( $invoice_id ) ); ?></td>
-                    <td class="total"><?php echo wpinv_discount( $invoice_id, true, true ); ?></td>
+                    <td class="rate"><?php wpinv_get_discount_label(wpinv_discount_code($invoice_id)); ?></td>
+                    <td class="total"><?php echo wpinv_discount($invoice_id, true, true); ?></td>
                 </tr>
-            <?php do_action( 'wpinv_after_display_discount' ); ?>
+            <?php do_action('wpinv_after_display_discount'); ?>
             <?php } ?>
-            <?php if ( $use_taxes ) { ?>
+            <?php if ($use_taxes) { ?>
             <tr class="row-tax">
-                <td class="rate"><?php _e( 'Tax', 'invoicing' ); ?></td>
-                <td class="total"><?php _e( wpinv_tax( $invoice_id, true ) ) ?></td>
+                <td class="rate"><?php _e('Tax', 'invoicing'); ?></td>
+                <td class="total"><?php _e(wpinv_tax($invoice_id, true)) ?></td>
             </tr>
-            <?php do_action( 'wpinv_after_display_tax' ); ?>
+            <?php do_action('wpinv_after_display_tax'); ?>
             <?php } ?>
-            <?php if ( $fees = wpinv_get_fees( $invoice_id ) ) { ?>
-                <?php foreach ( $fees as $fee ) { ?>
+            <?php if ($fees = wpinv_get_fees($invoice_id)) { ?>
+                <?php foreach ($fees as $fee) { ?>
                     <tr class="row-fee">
                         <td class="rate"><?php echo $fee['label']; ?></td>
                         <td class="total"><?php echo $fee['amount_display']; ?></td>
@@ -1159,73 +1159,73 @@ 
                 <?php } ?>
             <?php } ?>
             <tr class="table-active row-total">
-                <td class="rate"><strong><?php _e( 'Total', 'invoicing' ) ?></strong></td>
-                <td class="total"><strong><?php _e( wpinv_payment_total( $invoice_id, true ) ) ?></strong></td>
+                <td class="rate"><strong><?php _e('Total', 'invoicing') ?></strong></td>
+                <td class="total"><strong><?php _e(wpinv_payment_total($invoice_id, true)) ?></strong></td>
             </tr>
-            <?php do_action( 'wpinv_after_totals' ); ?>
+            <?php do_action('wpinv_after_totals'); ?>
         </tbody>
 
     </table>
 
-    <?php do_action( 'wpinv_after_totals_table' );
+    <?php do_action('wpinv_after_totals_table');
 }
 
-function wpinv_display_payments_info( $invoice_id = 0, $echo = true ) {
-    $invoice = wpinv_get_invoice( $invoice_id );
+function wpinv_display_payments_info($invoice_id = 0, $echo = true) {
+    $invoice = wpinv_get_invoice($invoice_id);
     
     ob_start();
-    do_action( 'wpinv_before_display_payments_info', $invoice_id );
-    if ( ( $gateway_title = $invoice->get_gateway_title() ) || $invoice->is_paid() || $invoice->is_refunded() ) {
+    do_action('wpinv_before_display_payments_info', $invoice_id);
+    if (($gateway_title = $invoice->get_gateway_title()) || $invoice->is_paid() || $invoice->is_refunded()) {
         ?>
         <div class="wpi-payment-info">
-            <p class="wpi-payment-gateway"><?php echo wp_sprintf( __( 'Payment via %s', 'invoicing' ), $gateway_title ? $gateway_title : __( 'Manually', 'invoicing' ) ); ?></p>
-            <?php if ( $gateway_title ) { ?>
-            <p class="wpi-payment-transid"><?php echo wp_sprintf( __( 'Transaction ID: %s', 'invoicing' ), $invoice->get_transaction_id() ); ?></p>
+            <p class="wpi-payment-gateway"><?php echo wp_sprintf(__('Payment via %s', 'invoicing'), $gateway_title ? $gateway_title : __('Manually', 'invoicing')); ?></p>
+            <?php if ($gateway_title) { ?>
+            <p class="wpi-payment-transid"><?php echo wp_sprintf(__('Transaction ID: %s', 'invoicing'), $invoice->get_transaction_id()); ?></p>
             <?php } ?>
         </div>
         <?php
     }
-    do_action( 'wpinv_after_display_payments_info', $invoice_id );
+    do_action('wpinv_after_display_payments_info', $invoice_id);
     $outout = ob_get_clean();
     
-    if ( $echo ) {
+    if ($echo) {
         echo $outout;
     } else {
         return $outout;
     }
 }
 
-function wpinv_display_style( $invoice ) {
-    wp_register_style( 'wpinv-single-style', WPINV_PLUGIN_URL . 'assets/css/invoice.css', array(), WPINV_VERSION );
+function wpinv_display_style($invoice) {
+    wp_register_style('wpinv-single-style', WPINV_PLUGIN_URL . 'assets/css/invoice.css', array(), WPINV_VERSION);
     
-    wp_print_styles( 'open-sans' );
-    wp_print_styles( 'wpinv-single-style' );
+    wp_print_styles('open-sans');
+    wp_print_styles('wpinv-single-style');
 }
-add_action( 'wpinv_invoice_print_head', 'wpinv_display_style' );
-add_action( 'wpinv_invalid_invoice_head', 'wpinv_display_style' );
+add_action('wpinv_invoice_print_head', 'wpinv_display_style');
+add_action('wpinv_invalid_invoice_head', 'wpinv_display_style');
 
 function wpinv_checkout_billing_details() {  
     $invoice_id = (int)wpinv_get_invoice_cart_id();
     if (empty($invoice_id)) {
-        wpinv_error_log( 'Invoice id not found', 'ERROR', __FILE__, __LINE__ );
+        wpinv_error_log('Invoice id not found', 'ERROR', __FILE__, __LINE__);
         return null;
     }
     
-    $invoice = wpinv_get_invoice_cart( $invoice_id );
+    $invoice = wpinv_get_invoice_cart($invoice_id);
     if (empty($invoice)) {
-        wpinv_error_log( 'Invoice not found', 'ERROR', __FILE__, __LINE__ );
+        wpinv_error_log('Invoice not found', 'ERROR', __FILE__, __LINE__);
         return null;
     }
     $user_id        = $invoice->get_user_id();
     $user_info      = $invoice->get_user_info();
-    $address_info   = wpinv_get_user_address( $user_id );
+    $address_info   = wpinv_get_user_address($user_id);
     
-    if ( empty( $user_info['first_name'] ) && !empty( $user_info['first_name'] ) ) {
+    if (empty($user_info['first_name']) && !empty($user_info['first_name'])) {
         $user_info['first_name'] = $user_info['first_name'];
         $user_info['last_name'] = $user_info['last_name'];
     }
     
-    if ( ( ( empty( $user_info['country'] ) && !empty( $address_info['country'] ) ) || ( empty( $user_info['state'] ) && !empty( $address_info['state'] ) && $user_info['country'] == $address_info['country'] ) ) ) {
+    if (((empty($user_info['country']) && !empty($address_info['country'])) || (empty($user_info['state']) && !empty($address_info['state']) && $user_info['country'] == $address_info['country']))) {
         $user_info['country']   = $address_info['country'];
         $user_info['state']     = $address_info['state'];
         $user_info['city']      = $address_info['city'];
@@ -1241,98 +1241,98 @@ 
         'address'
     );
     
-    foreach ( $address_fields as $field ) {
-        if ( empty( $user_info[$field] ) ) {
+    foreach ($address_fields as $field) {
+        if (empty($user_info[$field])) {
             $user_info[$field] = $address_info[$field];
         }
     }
     
-    return apply_filters( 'wpinv_checkout_billing_details', $user_info, $invoice );
+    return apply_filters('wpinv_checkout_billing_details', $user_info, $invoice);
 }
 
 function wpinv_admin_get_line_items($invoice = array()) {
     $item_quantities    = wpinv_item_quantities_enabled();
     $use_taxes          = wpinv_use_taxes();
     
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return NULL;
     }
     
     $cart_items = $invoice->get_cart_details();
-    if ( empty( $cart_items ) ) {
+    if (empty($cart_items)) {
         return NULL;
     }
     ob_start();
     
-    do_action( 'wpinv_admin_before_line_items', $cart_items, $invoice );
+    do_action('wpinv_admin_before_line_items', $cart_items, $invoice);
     
     $count = 0;
-    foreach ( $cart_items as $key => $cart_item ) {
+    foreach ($cart_items as $key => $cart_item) {
         $item_id    = $cart_item['id'];
-        $wpi_item   = $item_id > 0 ? new WPInv_Item( $item_id ) : NULL;
+        $wpi_item   = $item_id > 0 ? new WPInv_Item($item_id) : NULL;
         
         if (empty($wpi_item)) {
             continue;
         }
         
-        $item_price     = wpinv_price( wpinv_format_amount( $cart_item['item_price'] ), $invoice->get_currency() );
-        $quantity       = !empty( $cart_item['quantity'] ) && $cart_item['quantity'] > 0 ? $cart_item['quantity'] : 1;
-        $item_subtotal  = wpinv_price( wpinv_format_amount( $cart_item['subtotal'] ), $invoice->get_currency() );
+        $item_price     = wpinv_price(wpinv_format_amount($cart_item['item_price']), $invoice->get_currency());
+        $quantity       = !empty($cart_item['quantity']) && $cart_item['quantity'] > 0 ? $cart_item['quantity'] : 1;
+        $item_subtotal  = wpinv_price(wpinv_format_amount($cart_item['subtotal']), $invoice->get_currency());
         $can_remove     = true;
         
-        $summary = apply_filters( 'wpinv_admin_invoice_line_item_summary', '', $cart_item, $wpi_item, $invoice );
+        $summary = apply_filters('wpinv_admin_invoice_line_item_summary', '', $cart_item, $wpi_item, $invoice);
         
         $item_tax       = '';
         $tax_rate       = '';
-        if ( $cart_item['tax'] > 0 && $cart_item['subtotal'] > 0 ) {
-            $item_tax = wpinv_price( wpinv_format_amount( $cart_item['tax'] ), $invoice->get_currency() );
-            $tax_rate = !empty( $cart_item['vat_rate'] ) ? $cart_item['vat_rate'] : ( $cart_item['tax'] / $cart_item['subtotal'] ) * 100;
-            $tax_rate = $tax_rate > 0 ? (float)wpinv_round_amount( $tax_rate, 4 ) : '';
+        if ($cart_item['tax'] > 0 && $cart_item['subtotal'] > 0) {
+            $item_tax = wpinv_price(wpinv_format_amount($cart_item['tax']), $invoice->get_currency());
+            $tax_rate = !empty($cart_item['vat_rate']) ? $cart_item['vat_rate'] : ($cart_item['tax'] / $cart_item['subtotal']) * 100;
+            $tax_rate = $tax_rate > 0 ? (float)wpinv_round_amount($tax_rate, 4) : '';
             $tax_rate = $tax_rate != '' ? ' <span class="tax-rate">(' . $tax_rate . '%)</span>' : '';
         }
         $line_item_tax = $item_tax . $tax_rate;
         
-        if ( $line_item_tax === '' ) {
+        if ($line_item_tax === '') {
             $line_item_tax = 0; // Zero tax
         }
 
-        $line_item = '<tr class="item item-' . ( ($count % 2 == 0) ? 'even' : 'odd' ) . '" data-item-id="' . $item_id . '">';
+        $line_item = '<tr class="item item-' . (($count % 2 == 0) ? 'even' : 'odd') . '" data-item-id="' . $item_id . '">';
             $line_item .= '<td class="id">' . $item_id . '</td>';
-            $line_item .= '<td class="title"><a href="' . get_edit_post_link( $item_id ) . '" target="_blank">' . $cart_item['name'] . '</a>' . wpinv_get_item_suffix( $wpi_item );
-            if ( $summary !== '' ) {
-                $line_item .= '<span class="meta">' . wpautop( wp_kses_post( $summary ) ) . '</span>';
+            $line_item .= '<td class="title"><a href="' . get_edit_post_link($item_id) . '" target="_blank">' . $cart_item['name'] . '</a>' . wpinv_get_item_suffix($wpi_item);
+            if ($summary !== '') {
+                $line_item .= '<span class="meta">' . wpautop(wp_kses_post($summary)) . '</span>';
             }
             $line_item .= '</td>';
             $line_item .= '<td class="price">' . $item_price . '</td>';
             
-            if ( $item_quantities ) {
-                if ( count( $cart_items ) == 1 && $quantity <= 1 ) {
+            if ($item_quantities) {
+                if (count($cart_items) == 1 && $quantity <= 1) {
                     $can_remove = false;
                 }
                 $line_item .= '<td class="qty" data-quantity="' . $quantity . '">&nbsp;&times;&nbsp;' . $quantity . '</td>';
             } else {
-                if ( count( $cart_items ) == 1 ) {
+                if (count($cart_items) == 1) {
                     $can_remove = false;
                 }
             }
             $line_item .= '<td class="total">' . $item_subtotal . '</td>';
             
-            if ( $use_taxes ) {
+            if ($use_taxes) {
                 $line_item .= '<td class="tax">' . $line_item_tax . '</td>';
             }
             $line_item .= '<td class="action">';
-            if ( !$invoice->is_paid() && !$invoice->is_refunded() && $can_remove ) {
+            if (!$invoice->is_paid() && !$invoice->is_refunded() && $can_remove) {
                 $line_item .= '<i class="fa fa-remove wpinv-item-remove"></i>';
             }
             $line_item .= '</td>';
         $line_item .= '</tr>';
         
-        echo apply_filters( 'wpinv_admin_line_item', $line_item, $cart_item, $invoice );
+        echo apply_filters('wpinv_admin_line_item', $line_item, $cart_item, $invoice);
         
         $count++;
     } 
     
-    do_action( 'wpinv_admin_after_line_items', $cart_items, $invoice );
+    do_action('wpinv_admin_after_line_items', $cart_items, $invoice);
     
     return ob_get_clean();
 }
@@ -1343,35 +1343,35 @@ 
     // Set current invoice id.
     $wpi_checkout_id = wpinv_get_invoice_cart_id();
     
-    $form_action  = esc_url( wpinv_get_checkout_uri() );
+    $form_action = esc_url(wpinv_get_checkout_uri());
 
     ob_start();
         echo '<div id="wpinv_checkout_wrap">';
         
-        if ( wpinv_get_cart_contents() || wpinv_cart_has_fees() ) {
+        if (wpinv_get_cart_contents() || wpinv_cart_has_fees()) {
             ?>
             <div id="wpinv_checkout_form_wrap" class="wpinv_clearfix table-responsive">
-                <?php do_action( 'wpinv_before_checkout_form' ); ?>
+                <?php do_action('wpinv_before_checkout_form'); ?>
                 <form id="wpinv_checkout_form" class="wpi-form" action="<?php echo $form_action; ?>" method="POST">
                     <?php
-                    do_action( 'wpinv_checkout_form_top' );
-                    do_action( 'wpinv_checkout_billing_info' );
-                    do_action( 'wpinv_checkout_cart' );
-                    do_action( 'wpinv_payment_mode_select'  );
-                    do_action( 'wpinv_checkout_form_bottom' )
+                    do_action('wpinv_checkout_form_top');
+                    do_action('wpinv_checkout_billing_info');
+                    do_action('wpinv_checkout_cart');
+                    do_action('wpinv_payment_mode_select');
+                    do_action('wpinv_checkout_form_bottom')
                     ?>
                 </form>
-                <?php do_action( 'wpinv_after_purchase_form' ); ?>
+                <?php do_action('wpinv_after_purchase_form'); ?>
             </div><!--end #wpinv_checkout_form_wrap-->
         <?php
         } else {
-            do_action( 'wpinv_cart_empty' );
+            do_action('wpinv_cart_empty');
         }
         echo '</div><!--end #wpinv_checkout_wrap-->';
     return ob_get_clean();
 }
 
-function wpinv_checkout_cart( $cart_details = array(), $echo = true ) {
+function wpinv_checkout_cart($cart_details = array(), $echo = true) {
     global $ajax_cart_details;
     $ajax_cart_details = $cart_details;
     /*
@@ -1386,25 +1386,25 @@ 
     }
     */
     ob_start();
-    do_action( 'wpinv_before_checkout_cart' );
+    do_action('wpinv_before_checkout_cart');
     echo '<div id="wpinv_checkout_cart_form" method="post">';
         echo '<div id="wpinv_checkout_cart_wrap">';
-            wpinv_get_template_part( 'wpinv-checkout-cart' );
+            wpinv_get_template_part('wpinv-checkout-cart');
         echo '</div>';
     echo '</div>';
-    do_action( 'wpinv_after_checkout_cart' );
+    do_action('wpinv_after_checkout_cart');
     $content = ob_get_clean();
     
-    if ( $echo ) {
+    if ($echo) {
         echo $content;
     } else {
         return $content;
     }
 }
-add_action( 'wpinv_checkout_cart', 'wpinv_checkout_cart', 10 );
+add_action('wpinv_checkout_cart', 'wpinv_checkout_cart', 10);
 
 function wpinv_empty_cart_message() {
-	return apply_filters( 'wpinv_empty_cart_message', '<span class="wpinv_empty_cart">' . __( 'Your cart is empty.', 'invoicing' ) . '</span>' );
+	return apply_filters('wpinv_empty_cart_message', '<span class="wpinv_empty_cart">' . __('Your cart is empty.', 'invoicing') . '</span>');
 }
 
 /**
@@ -1416,91 +1416,91 @@ 
 function wpinv_empty_checkout_cart() {
 	echo wpinv_empty_cart_message();
 }
-add_action( 'wpinv_cart_empty', 'wpinv_empty_checkout_cart' );
+add_action('wpinv_cart_empty', 'wpinv_empty_checkout_cart');
 
 function wpinv_save_cart_button() {
-    if ( wpinv_is_cart_saving_disabled() )
+    if (wpinv_is_cart_saving_disabled())
         return;
 ?>
-    <a class="wpinv-cart-saving-button wpinv-submit button" id="wpinv-save-cart-button" href="<?php echo esc_url( add_query_arg( 'wpi_action', 'save_cart' ) ); ?>"><?php _e( 'Save Cart', 'invoicing' ); ?></a>
+    <a class="wpinv-cart-saving-button wpinv-submit button" id="wpinv-save-cart-button" href="<?php echo esc_url(add_query_arg('wpi_action', 'save_cart')); ?>"><?php _e('Save Cart', 'invoicing'); ?></a>
 <?php
 }
 
 function wpinv_update_cart_button() {
-    if ( !wpinv_item_quantities_enabled() )
+    if (!wpinv_item_quantities_enabled())
         return;
 ?>
-    <input type="submit" name="wpinv_update_cart_submit" class="wpinv-submit wpinv-no-js button" value="<?php _e( 'Update Cart', 'invoicing' ); ?>"/>
+    <input type="submit" name="wpinv_update_cart_submit" class="wpinv-submit wpinv-no-js button" value="<?php _e('Update Cart', 'invoicing'); ?>"/>
     <input type="hidden" name="wpi_action" value="update_cart"/>
 <?php
 }
 
 function wpinv_checkout_cart_columns() {
     $default = 3;
-    if ( wpinv_item_quantities_enabled() ) {
+    if (wpinv_item_quantities_enabled()) {
         $default++;
     }
     
-    if ( wpinv_use_taxes() ) {
+    if (wpinv_use_taxes()) {
         $default++;
     }
 
-    return apply_filters( 'wpinv_checkout_cart_columns', $default );
+    return apply_filters('wpinv_checkout_cart_columns', $default);
 }
 
 function wpinv_display_cart_messages() {
     global $wpi_session;
 
-    $messages = $wpi_session->get( 'wpinv_cart_messages' );
+    $messages = $wpi_session->get('wpinv_cart_messages');
 
-    if ( $messages ) {
-        foreach ( $messages as $message_id => $message ) {
+    if ($messages) {
+        foreach ($messages as $message_id => $message) {
             // Try and detect what type of message this is
-            if ( strpos( strtolower( $message ), 'error' ) ) {
+            if (strpos(strtolower($message), 'error')) {
                 $type = 'error';
-            } elseif ( strpos( strtolower( $message ), 'success' ) ) {
+            } elseif (strpos(strtolower($message), 'success')) {
                 $type = 'success';
             } else {
                 $type = 'info';
             }
 
-            $classes = apply_filters( 'wpinv_' . $type . '_class', array( 'wpinv_errors', 'wpinv-alert', 'wpinv-alert-' . $type ) );
+            $classes = apply_filters('wpinv_' . $type . '_class', array('wpinv_errors', 'wpinv-alert', 'wpinv-alert-' . $type));
 
-            echo '<div class="' . implode( ' ', $classes ) . '">';
+            echo '<div class="' . implode(' ', $classes) . '">';
                 // Loop message codes and display messages
                     echo '<p class="wpinv_error" id="wpinv_msg_' . $message_id . '">' . $message . '</p>';
             echo '</div>';
         }
 
         // Remove all of the cart saving messages
-        $wpi_session->set( 'wpinv_cart_messages', null );
+        $wpi_session->set('wpinv_cart_messages', null);
     }
 }
-add_action( 'wpinv_before_checkout_cart', 'wpinv_display_cart_messages' );
+add_action('wpinv_before_checkout_cart', 'wpinv_display_cart_messages');
 
 function wpinv_discount_field() {
-    if ( isset( $_GET['wpi-gateway'] ) && wpinv_is_ajax_disabled() ) {
+    if (isset($_GET['wpi-gateway']) && wpinv_is_ajax_disabled()) {
         return; // Only show before a payment method has been selected if ajax is disabled
     }
 
-    if ( !wpinv_is_checkout() ) {
+    if (!wpinv_is_checkout()) {
         return;
     }
 
-    if ( wpinv_has_active_discounts() && wpinv_get_cart_total() ) {
+    if (wpinv_has_active_discounts() && wpinv_get_cart_total()) {
     ?>
     <div id="wpinv-discount-field" class="panel panel-default">
         <div class="panel-body">
             <p>
-                <label class="wpinv-label" for="wpinv_discount_code"><strong><?php _e( 'Discount', 'invoicing' ); ?></strong></label>
-                <span class="wpinv-description"><?php _e( 'Enter a discount code if you have one.', 'invoicing' ); ?></span>
+                <label class="wpinv-label" for="wpinv_discount_code"><strong><?php _e('Discount', 'invoicing'); ?></strong></label>
+                <span class="wpinv-description"><?php _e('Enter a discount code if you have one.', 'invoicing'); ?></span>
             </p>
             <div class="form-group row">
                 <div class="col-sm-4">
-                    <input class="wpinv-input form-control" type="text" id="wpinv_discount_code" name="wpinv_discount_code" placeholder="<?php _e( 'Enter discount code', 'invoicing' ); ?>"/>
+                    <input class="wpinv-input form-control" type="text" id="wpinv_discount_code" name="wpinv_discount_code" placeholder="<?php _e('Enter discount code', 'invoicing'); ?>"/>
                 </div>
                 <div class="col-sm-3">
-                    <button id="wpi-apply-discount" type="button" class="btn btn-success btn-sm"><?php _e( 'Apply Discount', 'invoicing' ); ?></button>
+                    <button id="wpi-apply-discount" type="button" class="btn btn-success btn-sm"><?php _e('Apply Discount', 'invoicing'); ?></button>
                 </div>
                 <div style="clear:both"></div>
                 <div class="col-sm-12 wpinv-discount-msg">
@@ -1513,10 +1513,10 @@ 
 <?php
     }
 }
-add_action( 'wpinv_after_checkout_cart', 'wpinv_discount_field', -10 );
+add_action('wpinv_after_checkout_cart', 'wpinv_discount_field', -10);
 
 function wpinv_agree_to_terms_js() {
-    if ( wpinv_get_option( 'show_agree_to_terms', false ) ) {
+    if (wpinv_get_option('show_agree_to_terms', false)) {
 ?>
 <script type="text/javascript">
     jQuery(document).ready(function($){
@@ -1531,126 +1531,126 @@ 
 <?php
     }
 }
-add_action( 'wpinv_checkout_form_top', 'wpinv_agree_to_terms_js' );
+add_action('wpinv_checkout_form_top', 'wpinv_agree_to_terms_js');
 
 function wpinv_payment_mode_select() {
-    $gateways = wpinv_get_enabled_payment_gateways( true );
-    $gateways = apply_filters( 'wpinv_payment_gateways_on_cart', $gateways );
+    $gateways = wpinv_get_enabled_payment_gateways(true);
+    $gateways = apply_filters('wpinv_payment_gateways_on_cart', $gateways);
     $page_URL = wpinv_get_current_page_url();
-    $invoice = wpinv_get_invoice( 0, true );
+    $invoice = wpinv_get_invoice(0, true);
     
     do_action('wpinv_payment_mode_top');
     $invoice_id = (int)$invoice->ID;
-    $chosen_gateway = wpinv_get_chosen_gateway( $invoice_id );
+    $chosen_gateway = wpinv_get_chosen_gateway($invoice_id);
     ?>
-    <div id="wpinv_payment_mode_select" data-gateway="<?php echo $chosen_gateway; ?>" <?php echo ( $invoice->is_free() ? 'style="display:none;"' : '' ); ?>>
-            <?php do_action( 'wpinv_payment_mode_before_gateways_wrap' ); ?>
+    <div id="wpinv_payment_mode_select" data-gateway="<?php echo $chosen_gateway; ?>" <?php echo ($invoice->is_free() ? 'style="display:none;"' : ''); ?>>
+            <?php do_action('wpinv_payment_mode_before_gateways_wrap'); ?>
             <div id="wpinv-payment-mode-wrap" class="panel panel-default">
-                <div class="panel-heading"><h3 class="panel-title"><?php _e( 'Select Payment Method', 'invoicing' ); ?></h3></div>
+                <div class="panel-heading"><h3 class="panel-title"><?php _e('Select Payment Method', 'invoicing'); ?></h3></div>
                 <div class="panel-body list-group wpi-payment_methods">
                     <?php
-                    do_action( 'wpinv_payment_mode_before_gateways' );
+                    do_action('wpinv_payment_mode_before_gateways');
                     
-                    if(!empty($gateways)){
-	                    foreach ( $gateways as $gateway_id => $gateway ) {
-		                    $checked = checked( $gateway_id, $chosen_gateway, false );
-		                    $button_label = wpinv_get_gateway_button_label( $gateway_id );
-		                    $description = wpinv_get_gateway_description( $gateway_id );
+                    if (!empty($gateways)) {
+	                    foreach ($gateways as $gateway_id => $gateway) {
+		                    $checked = checked($gateway_id, $chosen_gateway, false);
+		                    $button_label = wpinv_get_gateway_button_label($gateway_id);
+		                    $description = wpinv_get_gateway_description($gateway_id);
 		                    ?>
 		                    <div class="list-group-item">
 			                    <div class="radio">
-				                    <label><input type="radio" data-button-text="<?php echo esc_attr( $button_label );?>" value="<?php echo esc_attr( $gateway_id ) ;?>" <?php echo $checked ;?> id="wpi_gateway_<?php echo esc_attr( $gateway_id );?>" name="wpi-gateway" class="wpi-pmethod"><?php echo esc_html( $gateway['checkout_label'] ); ?></label>
+				                    <label><input type="radio" data-button-text="<?php echo esc_attr($button_label); ?>" value="<?php echo esc_attr($gateway_id); ?>" <?php echo $checked; ?> id="wpi_gateway_<?php echo esc_attr($gateway_id); ?>" name="wpi-gateway" class="wpi-pmethod"><?php echo esc_html($gateway['checkout_label']); ?></label>
 			                    </div>
-			                    <div style="display:none;" class="payment_box wpi_gateway_<?php echo esc_attr( $gateway_id );?>" role="alert">
-				                    <?php if ( !empty( $description ) ) { ?>
-					                    <div class="wpi-gateway-desc alert alert-info"><?php echo $description;?></div>
+			                    <div style="display:none;" class="payment_box wpi_gateway_<?php echo esc_attr($gateway_id); ?>" role="alert">
+				                    <?php if (!empty($description)) { ?>
+					                    <div class="wpi-gateway-desc alert alert-info"><?php echo $description; ?></div>
 				                    <?php } ?>
-				                    <?php do_action( 'wpinv_' . $gateway_id . '_cc_form', $invoice_id ) ;?>
+				                    <?php do_action('wpinv_' . $gateway_id . '_cc_form', $invoice_id); ?>
 			                    </div>
 		                    </div>
 		                    <?php
 	                    }
-                    }else{
-	                    echo '<div class="alert alert-warning">'. __('No payment gateway active','invoicing') .'</div>';
+                    } else {
+	                    echo '<div class="alert alert-warning">' . __('No payment gateway active', 'invoicing') . '</div>';
                     }
 
-                    do_action( 'wpinv_payment_mode_after_gateways' );
+                    do_action('wpinv_payment_mode_after_gateways');
                     ?>
                 </div>
             </div>
-            <?php do_action( 'wpinv_payment_mode_after_gateways_wrap' ); ?>
+            <?php do_action('wpinv_payment_mode_after_gateways_wrap'); ?>
     </div>
     <?php
     do_action('wpinv_payment_mode_bottom');
 }
-add_action( 'wpinv_payment_mode_select', 'wpinv_payment_mode_select' );
+add_action('wpinv_payment_mode_select', 'wpinv_payment_mode_select');
 
 function wpinv_checkout_billing_info() {    
-    if ( wpinv_is_checkout() ) {
+    if (wpinv_is_checkout()) {
         $logged_in          = is_user_logged_in();
         $billing_details    = wpinv_checkout_billing_details();
-        $selected_country   = !empty( $billing_details['country'] ) ? $billing_details['country'] : wpinv_default_billing_country();
+        $selected_country   = !empty($billing_details['country']) ? $billing_details['country'] : wpinv_default_billing_country();
         ?>
         <div id="wpinv-fields" class="clearfix">
             <div id="wpi-billing" class="wpi-billing clearfix panel panel-default">
-                <div class="panel-heading"><h3 class="panel-title"><?php _e( 'Billing Details', 'invoicing' );?></h3></div>
+                <div class="panel-heading"><h3 class="panel-title"><?php _e('Billing Details', 'invoicing'); ?></h3></div>
                 <div id="wpinv-fields-box" class="panel-body">
-                    <?php do_action( 'wpinv_checkout_billing_fields_first', $billing_details ); ?>
+                    <?php do_action('wpinv_checkout_billing_fields_first', $billing_details); ?>
                     <p class="wpi-cart-field wpi-col2 wpi-colf">
-                        <label for="wpinv_first_name" class="wpi-label"><?php _e( 'First Name', 'invoicing' );?><?php if ( wpinv_get_option( 'fname_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <label for="wpinv_first_name" class="wpi-label"><?php _e('First Name', 'invoicing'); ?><?php if (wpinv_get_option('fname_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
                         <?php
-                        echo wpinv_html_text( array(
+                        echo wpinv_html_text(array(
                                 'id'            => 'wpinv_first_name',
                                 'name'          => 'wpinv_first_name',
                                 'value'         => $billing_details['first_name'],
                                 'class'         => 'wpi-input form-control',
-                                'placeholder'   => __( 'First name', 'invoicing' ),
-                                'required'      => (bool)wpinv_get_option( 'fname_mandatory' ),
-                            ) );
+                                'placeholder'   => __('First name', 'invoicing'),
+                                'required'      => (bool)wpinv_get_option('fname_mandatory'),
+                            ));
                         ?>
                     </p>
                     <p class="wpi-cart-field wpi-col2 wpi-coll">
-                        <label for="wpinv_last_name" class="wpi-label"><?php _e( 'Last Name', 'invoicing' );?><?php if ( wpinv_get_option( 'lname_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <label for="wpinv_last_name" class="wpi-label"><?php _e('Last Name', 'invoicing'); ?><?php if (wpinv_get_option('lname_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
                         <?php
-                        echo wpinv_html_text( array(
+                        echo wpinv_html_text(array(
                                 'id'            => 'wpinv_last_name',
                                 'name'          => 'wpinv_last_name',
                                 'value'         => $billing_details['last_name'],
                                 'class'         => 'wpi-input form-control',
-                                'placeholder'   => __( 'Last name', 'invoicing' ),
-                                'required'      => (bool)wpinv_get_option( 'lname_mandatory' ),
-                            ) );
+                                'placeholder'   => __('Last name', 'invoicing'),
+                                'required'      => (bool)wpinv_get_option('lname_mandatory'),
+                            ));
                         ?>
                     </p>
                     <p class="wpi-cart-field wpi-col2 wpi-colf">
-                        <label for="wpinv_address" class="wpi-label"><?php _e( 'Address', 'invoicing' );?><?php if ( wpinv_get_option( 'address_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <label for="wpinv_address" class="wpi-label"><?php _e('Address', 'invoicing'); ?><?php if (wpinv_get_option('address_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
                         <?php
-                        echo wpinv_html_text( array(
+                        echo wpinv_html_text(array(
                                 'id'            => 'wpinv_address',
                                 'name'          => 'wpinv_address',
                                 'value'         => $billing_details['address'],
                                 'class'         => 'wpi-input form-control',
-                                'placeholder'   => __( 'Address', 'invoicing' ),
-                                'required'      => (bool)wpinv_get_option( 'address_mandatory' ),
-                            ) );
+                                'placeholder'   => __('Address', 'invoicing'),
+                                'required'      => (bool)wpinv_get_option('address_mandatory'),
+                            ));
                         ?>
                     </p>
                     <p class="wpi-cart-field wpi-col2 wpi-coll">
-                        <label for="wpinv_city" class="wpi-label"><?php _e( 'City', 'invoicing' );?><?php if ( wpinv_get_option( 'city_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <label for="wpinv_city" class="wpi-label"><?php _e('City', 'invoicing'); ?><?php if (wpinv_get_option('city_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
                         <?php
-                        echo wpinv_html_text( array(
+                        echo wpinv_html_text(array(
                                 'id'            => 'wpinv_city',
                                 'name'          => 'wpinv_city',
                                 'value'         => $billing_details['city'],
                                 'class'         => 'wpi-input form-control',
-                                'placeholder'   => __( 'City', 'invoicing' ),
-                                'required'      => (bool)wpinv_get_option( 'city_mandatory' ),
-                            ) );
+                                'placeholder'   => __('City', 'invoicing'),
+                                'required'      => (bool)wpinv_get_option('city_mandatory'),
+                            ));
                         ?>
                     </p>
                     <p id="wpinv_country_box" class="wpi-cart-field wpi-col2 wpi-colf">
-                        <label for="wpinv_country" class="wpi-label"><?php _e( 'Country', 'invoicing' );?><?php if ( wpinv_get_option( 'country_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
-                        <?php echo wpinv_html_select( array(
+                        <label for="wpinv_country" class="wpi-label"><?php _e('Country', 'invoicing'); ?><?php if (wpinv_get_option('country_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <?php echo wpinv_html_select(array(
                             'options'          => wpinv_get_country_list(),
                             'name'             => 'wpinv_country',
                             'id'               => 'wpinv_country',
@@ -1658,16 +1658,16 @@ 
                             'show_option_all'  => false,
                             'show_option_none' => false,
                             'class'            => 'wpi-input form-control',
-                            'placeholder'      => __( 'Choose a country', 'invoicing' ),
-                            'required'         => (bool)wpinv_get_option( 'country_mandatory' ),
-                        ) ); ?>
+                            'placeholder'      => __('Choose a country', 'invoicing'),
+                            'required'         => (bool)wpinv_get_option('country_mandatory'),
+                        )); ?>
                     </p>
                     <p id="wpinv_state_box" class="wpi-cart-field wpi-col2 wpi-coll">
-                        <label for="wpinv_state" class="wpi-label"><?php _e( 'State / Province', 'invoicing' );?><?php if ( wpinv_get_option( 'state_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <label for="wpinv_state" class="wpi-label"><?php _e('State / Province', 'invoicing'); ?><?php if (wpinv_get_option('state_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
                         <?php
-                        $states = wpinv_get_country_states( $selected_country );
-                        if( !empty( $states ) ) {
-                            echo wpinv_html_select( array(
+                        $states = wpinv_get_country_states($selected_country);
+                        if (!empty($states)) {
+                            echo wpinv_html_select(array(
                                 'options'          => $states,
                                 'name'             => 'wpinv_state',
                                 'id'               => 'wpinv_state',
@@ -1675,61 +1675,61 @@ 
                                 'show_option_all'  => false,
                                 'show_option_none' => false,
                                 'class'            => 'wpi-input form-control',
-                                'placeholder'      => __( 'Choose a state', 'invoicing' ),
-                                'required'         => (bool)wpinv_get_option( 'state_mandatory' ),
-                            ) );
+                                'placeholder'      => __('Choose a state', 'invoicing'),
+                                'required'         => (bool)wpinv_get_option('state_mandatory'),
+                            ));
                         } else {
-                            echo wpinv_html_text( array(
+                            echo wpinv_html_text(array(
                                 'name'          => 'wpinv_state',
                                 'value'         => $billing_details['state'],
                                 'id'            => 'wpinv_state',
                                 'class'         => 'wpi-input form-control',
-                                'placeholder'   => __( 'State / Province', 'invoicing' ),
-                                'required'      => (bool)wpinv_get_option( 'state_mandatory' ),
-                            ) );
+                                'placeholder'   => __('State / Province', 'invoicing'),
+                                'required'      => (bool)wpinv_get_option('state_mandatory'),
+                            ));
                         }
                         ?>
                     </p>
                     <p class="wpi-cart-field wpi-col2 wpi-colf">
-                        <label for="wpinv_zip" class="wpi-label"><?php _e( 'ZIP / Postcode', 'invoicing' );?><?php if ( wpinv_get_option( 'zip_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <label for="wpinv_zip" class="wpi-label"><?php _e('ZIP / Postcode', 'invoicing'); ?><?php if (wpinv_get_option('zip_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
                         <?php
-                        echo wpinv_html_text( array(
+                        echo wpinv_html_text(array(
                                 'name'          => 'wpinv_zip',
                                 'value'         => $billing_details['zip'],
                                 'id'            => 'wpinv_zip',
                                 'class'         => 'wpi-input form-control',
-                                'placeholder'   => __( 'ZIP / Postcode', 'invoicing' ),
-                                'required'      => (bool)wpinv_get_option( 'zip_mandatory' ),
-                            ) );
+                                'placeholder'   => __('ZIP / Postcode', 'invoicing'),
+                                'required'      => (bool)wpinv_get_option('zip_mandatory'),
+                            ));
                         ?>
                     </p>
                     <p class="wpi-cart-field wpi-col2 wpi-coll">
-                        <label for="wpinv_phone" class="wpi-label"><?php _e( 'Phone', 'invoicing' );?><?php if ( wpinv_get_option( 'phone_mandatory' ) ) { echo '<span class="wpi-required">*</span>'; } ?></label>
+                        <label for="wpinv_phone" class="wpi-label"><?php _e('Phone', 'invoicing'); ?><?php if (wpinv_get_option('phone_mandatory')) { echo '<span class="wpi-required">*</span>'; } ?></label>
                         <?php
-                        echo wpinv_html_text( array(
+                        echo wpinv_html_text(array(
                                 'id'            => 'wpinv_phone',
                                 'name'          => 'wpinv_phone',
                                 'value'         => $billing_details['phone'],
                                 'class'         => 'wpi-input form-control',
-                                'placeholder'   => __( 'Phone', 'invoicing' ),
-                                'required'      => (bool)wpinv_get_option( 'phone_mandatory' ),
-                            ) );
+                                'placeholder'   => __('Phone', 'invoicing'),
+                                'required'      => (bool)wpinv_get_option('phone_mandatory'),
+                            ));
                         ?>
                     </p>
-                    <?php do_action( 'wpinv_checkout_billing_fields_last', $billing_details ); ?>
+                    <?php do_action('wpinv_checkout_billing_fields_last', $billing_details); ?>
                     <div class="clearfix"></div>
                 </div>
             </div>
-            <?php do_action( 'wpinv_after_billing_fields', $billing_details ); ?>
+            <?php do_action('wpinv_after_billing_fields', $billing_details); ?>
         </div>
         <?php
     }
 }
-add_action( 'wpinv_checkout_billing_info', 'wpinv_checkout_billing_info' );
+add_action('wpinv_checkout_billing_info', 'wpinv_checkout_billing_info');
 
 function wpinv_checkout_hidden_fields() {
 ?>
-    <?php if ( is_user_logged_in() ) { ?>
+    <?php if (is_user_logged_in()) { ?>
     <input type="hidden" name="wpinv_user_id" value="<?php echo get_current_user_id(); ?>"/>
     <?php } ?>
     <input type="hidden" name="wpi_action" value="payment" />
@@ -1739,9 +1739,9 @@ 
 function wpinv_checkout_button_purchase() {
     ob_start();
 ?>
-    <input type="submit" class="btn btn-success wpinv-submit" id="wpinv-payment-button" data-value="<?php esc_attr_e( 'Proceed to Pay', 'invoicing' ) ?>" name="wpinv_payment" value="<?php esc_attr_e( 'Proceed to Pay', 'invoicing' ) ?>"/>
+    <input type="submit" class="btn btn-success wpinv-submit" id="wpinv-payment-button" data-value="<?php esc_attr_e('Proceed to Pay', 'invoicing') ?>" name="wpinv_payment" value="<?php esc_attr_e('Proceed to Pay', 'invoicing') ?>"/>
 <?php
-    return apply_filters( 'wpinv_checkout_button_purchase', ob_get_clean() );
+    return apply_filters('wpinv_checkout_button_purchase', ob_get_clean());
 }
 
 function wpinv_checkout_total() {
@@ -1750,96 +1750,96 @@ 
 <div id="wpinv_checkout_total" class="panel panel-info">
     <div class="panel-body">
     <?php
-    do_action( 'wpinv_purchase_form_before_checkout_total' );
+    do_action('wpinv_purchase_form_before_checkout_total');
     ?>
-    <strong><?php _e( 'Invoice Total:', 'invoicing' ) ?></strong> <span class="wpinv-chdeckout-total"><?php echo $cart_total;?></span>
+    <strong><?php _e('Invoice Total:', 'invoicing') ?></strong> <span class="wpinv-chdeckout-total"><?php echo $cart_total; ?></span>
     <?php
-    do_action( 'wpinv_purchase_form_after_checkout_total' );
+    do_action('wpinv_purchase_form_after_checkout_total');
     ?>
     </div>
 </div>
 <?php
 }
-add_action( 'wpinv_checkout_form_bottom', 'wpinv_checkout_total', 9998 );
+add_action('wpinv_checkout_form_bottom', 'wpinv_checkout_total', 9998);
 
 function wpinv_checkout_submit() {
 ?>
 <div id="wpinv_purchase_submit" class="panel panel-success">
     <div class="panel-body text-center">
     <?php
-    do_action( 'wpinv_purchase_form_before_submit' );
+    do_action('wpinv_purchase_form_before_submit');
     wpinv_checkout_hidden_fields();
     echo wpinv_checkout_button_purchase();
-    do_action( 'wpinv_purchase_form_after_submit' );
+    do_action('wpinv_purchase_form_after_submit');
     ?>
     </div>
 </div>
 <?php
 }
-add_action( 'wpinv_checkout_form_bottom', 'wpinv_checkout_submit', 9999 );
+add_action('wpinv_checkout_form_bottom', 'wpinv_checkout_submit', 9999);
 
-function wpinv_receipt_billing_address( $invoice_id = 0 ) {
-    $invoice = wpinv_get_invoice( $invoice_id );
+function wpinv_receipt_billing_address($invoice_id = 0) {
+    $invoice = wpinv_get_invoice($invoice_id);
     
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return NULL;
     }
     
     $billing_details = $invoice->get_user_info();
     $address_row = '';
-    if ( $address = $billing_details['address'] ) {
-        $address_row .= wpautop( wp_kses_post( $address ) );
+    if ($address = $billing_details['address']) {
+        $address_row .= wpautop(wp_kses_post($address));
     }
     
     $address_fields = array();
-    if ( !empty( $billing_details['city'] ) ) {
+    if (!empty($billing_details['city'])) {
         $address_fields[] = $billing_details['city'];
     }
     
-    $billing_country = !empty( $billing_details['country'] ) ? $billing_details['country'] : '';
-    if ( !empty( $billing_details['state'] ) ) {
-        $address_fields[] = wpinv_state_name( $billing_details['state'], $billing_country );
+    $billing_country = !empty($billing_details['country']) ? $billing_details['country'] : '';
+    if (!empty($billing_details['state'])) {
+        $address_fields[] = wpinv_state_name($billing_details['state'], $billing_country);
     }
     
-    if ( !empty( $billing_country ) ) {
-        $address_fields[] = wpinv_country_name( $billing_country );
+    if (!empty($billing_country)) {
+        $address_fields[] = wpinv_country_name($billing_country);
     }
     
-    if ( !empty( $address_fields ) ) {
-        $address_fields = implode( ", ", $address_fields );
+    if (!empty($address_fields)) {
+        $address_fields = implode(", ", $address_fields);
         
-        if ( !empty( $billing_details['zip'] ) ) {
+        if (!empty($billing_details['zip'])) {
             $address_fields .= ' ' . $billing_details['zip'];
         }
         
-        $address_row .= wpautop( wp_kses_post( $address_fields ) );
+        $address_row .= wpautop(wp_kses_post($address_fields));
     }
     ob_start();
     ?>
     <table class="table table-bordered table-sm wpi-billing-details">
         <tbody>
             <tr class="wpi-receipt-name">
-                <th class="text-left"><?php _e( 'Name', 'invoicing' ); ?></th>
-                <td><?php echo esc_html( trim( $billing_details['first_name'] . ' ' . $billing_details['last_name'] ) ) ;?></td>
+                <th class="text-left"><?php _e('Name', 'invoicing'); ?></th>
+                <td><?php echo esc_html(trim($billing_details['first_name'] . ' ' . $billing_details['last_name'])); ?></td>
             </tr>
             <tr class="wpi-receipt-email">
-                <th class="text-left"><?php _e( 'Email', 'invoicing' ); ?></th>
-                <td><?php echo $billing_details['email'] ;?></td>
+                <th class="text-left"><?php _e('Email', 'invoicing'); ?></th>
+                <td><?php echo $billing_details['email']; ?></td>
             </tr>
-            <?php if ( $billing_details['company'] ) { ?>
+            <?php if ($billing_details['company']) { ?>
             <tr class="wpi-receipt-company">
-                <th class="text-left"><?php _e( 'Company', 'invoicing' ); ?></th>
-                <td><?php echo esc_html( $billing_details['company'] ) ;?></td>
+                <th class="text-left"><?php _e('Company', 'invoicing'); ?></th>
+                <td><?php echo esc_html($billing_details['company']); ?></td>
             </tr>
             <?php } ?>
             <tr class="wpi-receipt-address">
-                <th class="text-left"><?php _e( 'Address', 'invoicing' ); ?></th>
-                <td><?php echo $address_row ;?></td>
+                <th class="text-left"><?php _e('Address', 'invoicing'); ?></th>
+                <td><?php echo $address_row; ?></td>
             </tr>
-            <?php if ( $billing_details['phone'] ) { ?>
+            <?php if ($billing_details['phone']) { ?>
             <tr class="wpi-receipt-phone">
-                <th class="text-left"><?php _e( 'Phone', 'invoicing' ); ?></th>
-                <td><?php echo esc_html( $billing_details['phone'] ) ;?></td>
+                <th class="text-left"><?php _e('Phone', 'invoicing'); ?></th>
+                <td><?php echo esc_html($billing_details['phone']); ?></td>
             </tr>
             <?php } ?>
         </tbody>
@@ -1847,103 +1847,103 @@ 
     <?php
     $output = ob_get_clean();
     
-    $output = apply_filters( 'wpinv_receipt_billing_address', $output, $invoice_id );
+    $output = apply_filters('wpinv_receipt_billing_address', $output, $invoice_id);
 
     echo $output;
 }
 
-function wpinv_filter_success_page_content( $content ) {
-    if ( isset( $_GET['payment-confirm'] ) && wpinv_is_success_page() ) {
-        if ( has_filter( 'wpinv_payment_confirm_' . sanitize_text_field( $_GET['payment-confirm'] ) ) ) {
-            $content = apply_filters( 'wpinv_payment_confirm_' . sanitize_text_field( $_GET['payment-confirm'] ), $content );
+function wpinv_filter_success_page_content($content) {
+    if (isset($_GET['payment-confirm']) && wpinv_is_success_page()) {
+        if (has_filter('wpinv_payment_confirm_' . sanitize_text_field($_GET['payment-confirm']))) {
+            $content = apply_filters('wpinv_payment_confirm_' . sanitize_text_field($_GET['payment-confirm']), $content);
         }
     }
 
     return $content;
 }
-add_filter( 'the_content', 'wpinv_filter_success_page_content', 99999 );
+add_filter('the_content', 'wpinv_filter_success_page_content', 99999);
 
-function wpinv_receipt_actions( $invoice ) {
-    if ( !empty( $invoice ) ) {
+function wpinv_receipt_actions($invoice) {
+    if (!empty($invoice)) {
         $actions = array();
 
-        if ( wpinv_user_can_view_invoice( $invoice->ID ) ) {
-            $actions['print']   = array(
-                'url'  => $invoice->get_view_url( true ),
-                'name' => __( 'Print Invoice', 'invoicing' ),
+        if (wpinv_user_can_view_invoice($invoice->ID)) {
+            $actions['print'] = array(
+                'url'  => $invoice->get_view_url(true),
+                'name' => __('Print Invoice', 'invoicing'),
                 'class' => 'btn-primary',
             );
         }
 
-        if ( is_user_logged_in() ) {
+        if (is_user_logged_in()) {
             $actions['history'] = array(
                 'url'  => wpinv_get_history_page_uri(),
-                'name' => __( 'Invoice History', 'invoicing' ),
+                'name' => __('Invoice History', 'invoicing'),
                 'class' => 'btn-warning',
             );
         }
 
-        $actions = apply_filters( 'wpinv_invoice_receipt_actions', $actions, $invoice );
+        $actions = apply_filters('wpinv_invoice_receipt_actions', $actions, $invoice);
         
-        if ( !empty( $actions ) ) {
+        if (!empty($actions)) {
         ?>
         <div class="wpinv-receipt-actions text-right">
-            <?php foreach ( $actions as $key => $action ) { $class = !empty($action['class']) ? sanitize_html_class( $action['class'] ) : ''; ?>
-            <a href="<?php echo esc_url( $action['url'] );?>" class="btn btn-sm <?php echo $class . ' ' . sanitize_html_class( $key );?>" <?php echo ( !empty($action['attrs']) ? $action['attrs'] : '' ) ;?>><?php echo esc_html( $action['name'] );?></a>
+            <?php foreach ($actions as $key => $action) { $class = !empty($action['class']) ? sanitize_html_class($action['class']) : ''; ?>
+            <a href="<?php echo esc_url($action['url']); ?>" class="btn btn-sm <?php echo $class . ' ' . sanitize_html_class($key); ?>" <?php echo (!empty($action['attrs']) ? $action['attrs'] : ''); ?>><?php echo esc_html($action['name']); ?></a>
             <?php } ?>
         </div>
         <?php
         }
     }
 }
-add_action( 'wpinv_receipt_start', 'wpinv_receipt_actions', -10, 1 );
+add_action('wpinv_receipt_start', 'wpinv_receipt_actions', -10, 1);
 
-function wpinv_invoice_link( $invoice_id ) {
-    $invoice = wpinv_get_invoice( $invoice_id );
+function wpinv_invoice_link($invoice_id) {
+    $invoice = wpinv_get_invoice($invoice_id);
     
-    if ( empty( $invoice ) ) {
+    if (empty($invoice)) {
         return NULL;
     }
     
-    $invoice_link = '<a href="' . esc_url( $invoice->get_view_url() ) . '">' . $invoice->get_number() . '</a>';
+    $invoice_link = '<a href="' . esc_url($invoice->get_view_url()) . '">' . $invoice->get_number() . '</a>';
     
-    return apply_filters( 'wpinv_get_invoice_link', $invoice_link, $invoice );
+    return apply_filters('wpinv_get_invoice_link', $invoice_link, $invoice);
 }
 
-function wpinv_invoice_subscription_details( $invoice ) {
-    if ( !empty( $invoice ) && $invoice->is_recurring() && !wpinv_is_subscription_payment( $invoice ) ) {
+function wpinv_invoice_subscription_details($invoice) {
+    if (!empty($invoice) && $invoice->is_recurring() && !wpinv_is_subscription_payment($invoice)) {
         $total_payments = (int)$invoice->get_total_payments();
         $payments       = $invoice->get_child_payments();
         
         $subscription   = $invoice->get_subscription_data();
         
-        if ( !( !empty( $subscription ) && !empty( $subscription['item_id'] ) ) ) {
+        if (!(!empty($subscription) && !empty($subscription['item_id']))) {
             return;
         }
         
-        $billing_cycle  = wpinv_get_billing_cycle( $subscription['initial_amount'], $subscription['recurring_amount'], $subscription['period'], $subscription['interval'], $subscription['bill_times'], $subscription['trial_period'], $subscription['trial_interval'], $invoice->get_currency() );
-        $times_billed   = $total_payments . ' / ' . ( ( (int)$subscription['bill_times'] == 0 ) ? __( 'Until cancelled', 'invoicing' ) : $subscription['bill_times'] );
+        $billing_cycle  = wpinv_get_billing_cycle($subscription['initial_amount'], $subscription['recurring_amount'], $subscription['period'], $subscription['interval'], $subscription['bill_times'], $subscription['trial_period'], $subscription['trial_interval'], $invoice->get_currency());
+        $times_billed   = $total_payments . ' / ' . (((int)$subscription['bill_times'] == 0) ? __('Until cancelled', 'invoicing') : $subscription['bill_times']);
         
         $subscription_status = $invoice->get_subscription_status();
         
         $status_desc = '';
-        if ( $subscription_status == 'trialing' && $trial_end_date = $invoice->get_trial_end_date() ) {
-            $status_desc = wp_sprintf( __( 'Until: %s', 'invoicing' ), $trial_end_date );
-        } else if ( $subscription_status == 'cancelled' && $cancelled_date = $invoice->get_cancelled_date() ) {
-            $status_desc = wp_sprintf( __( 'On: %s', 'invoicing' ), $cancelled_date );
+        if ($subscription_status == 'trialing' && $trial_end_date = $invoice->get_trial_end_date()) {
+            $status_desc = wp_sprintf(__('Until: %s', 'invoicing'), $trial_end_date);
+        } else if ($subscription_status == 'cancelled' && $cancelled_date = $invoice->get_cancelled_date()) {
+            $status_desc = wp_sprintf(__('On: %s', 'invoicing'), $cancelled_date);
         }
         $status_desc = $status_desc != '' ? '<span class="meta">' . $status_desc . '</span>' : '';
         ?>
         <div class="wpinv-subscriptions-details">
-            <h3 class="wpinv-subscriptions-t"><?php echo apply_filters( 'wpinv_subscription_details_title', __( 'Subscription Details', 'invoicing' ) ); ?></h3>
+            <h3 class="wpinv-subscriptions-t"><?php echo apply_filters('wpinv_subscription_details_title', __('Subscription Details', 'invoicing')); ?></h3>
             <table class="table">
                 <thead>
                     <tr>
-                        <th><?php _e( 'Billing Cycle', 'invoicing' ) ;?></th>
-                        <th><?php _e( 'Start Date', 'invoicing' ) ;?></th>
-                        <th><?php _e( 'Expiration Date', 'invoicing' ) ;?></th>
-                        <th class="text-center"><?php _e( 'Times Billed', 'invoicing' ) ;?></th>
-                        <th class="text-center"><?php _e( 'Status', 'invoicing' ) ;?></th>
+                        <th><?php _e('Billing Cycle', 'invoicing'); ?></th>
+                        <th><?php _e('Start Date', 'invoicing'); ?></th>
+                        <th><?php _e('Expiration Date', 'invoicing'); ?></th>
+                        <th class="text-center"><?php _e('Times Billed', 'invoicing'); ?></th>
+                        <th class="text-center"><?php _e('Status', 'invoicing'); ?></th>
                     </tr>
                 </thead>
                 <tbody>
@@ -1952,32 +1952,32 @@ 
                         <td><?php echo $invoice->get_subscription_start(); ?></td>
                         <td><?php echo $invoice->get_subscription_end(); ?></td>
                         <td class="text-center"><?php echo $times_billed; ?></td>
-                        <td class="text-center wpi-sub-status"><?php echo $invoice->get_subscription_status_label() ;?>
+                        <td class="text-center wpi-sub-status"><?php echo $invoice->get_subscription_status_label(); ?>
                         <?php echo $status_desc; ?>
                         </td>
                     </tr>
                 </tbody>
             </table>
         </div>
-        <?php if ( !empty( $payments ) ) { ?>
+        <?php if (!empty($payments)) { ?>
         <div class="wpinv-renewal-payments">
-            <h3 class="wpinv-renewals-t"><?php echo apply_filters( 'wpinv_renewal_payments_title', __( 'Renewal Payments', 'invoicing' ) ); ?></h3>
+            <h3 class="wpinv-renewals-t"><?php echo apply_filters('wpinv_renewal_payments_title', __('Renewal Payments', 'invoicing')); ?></h3>
             <table class="table">
                 <thead>
                     <tr>
                         <th>#</th>
-                        <th><?php _e( 'Invoice', 'invoicing' ) ;?></th>
-                        <th><?php _e( 'Date', 'invoicing' ) ;?></th>
-                        <th class="text-right"><?php _e( 'Amount', 'invoicing' ) ;?></th>
+                        <th><?php _e('Invoice', 'invoicing'); ?></th>
+                        <th><?php _e('Date', 'invoicing'); ?></th>
+                        <th class="text-right"><?php _e('Amount', 'invoicing'); ?></th>
                     </tr>
                 </thead>
                 <tbody>
-                    <?php foreach ( $payments as $key => $invoice_id ) { ?>
+                    <?php foreach ($payments as $key => $invoice_id) { ?>
                     <tr>
-                        <th scope="row"><?php echo ( $key + 1 );?></th>
-                        <td><?php echo wpinv_invoice_link( $invoice_id ) ;?></td>
-                        <td><?php echo wpinv_get_invoice_date( $invoice_id ); ?></td>
-                        <td class="text-right"><?php echo wpinv_payment_total( $invoice_id, true ); ?></td>
+                        <th scope="row"><?php echo ($key + 1); ?></th>
+                        <td><?php echo wpinv_invoice_link($invoice_id); ?></td>
+                        <td><?php echo wpinv_get_invoice_date($invoice_id); ?></td>
+                        <td class="text-right"><?php echo wpinv_payment_total($invoice_id, true); ?></td>
                     </tr>
                     <?php } ?>
                     <tr><td colspan="4" style="padding:0"></td></tr>
@@ -1989,52 +1989,52 @@ 
     }
 }
 
-function wpinv_cart_total_label( $label, $invoice ) {
-    if ( empty( $invoice ) ) {
+function wpinv_cart_total_label($label, $invoice) {
+    if (empty($invoice)) {
         return $label;
     }
     
     $prefix_label = '';
-    if ( $invoice->is_parent() && $item_id = $invoice->get_recurring() ) {        
-        $prefix_label   = '<span class="label label-primary label-recurring">' . __( 'Recurring Payment', 'invoicing' ) . '</span> ' . wpinv_subscription_payment_desc( $invoice );
-    } else if ( $invoice->is_renewal() ) {
-        $prefix_label   = '<span class="label label-primary label-renewal">' . __( 'Renewal Payment', 'invoicing' ) . '</span> ';        
+    if ($invoice->is_parent() && $item_id = $invoice->get_recurring()) {        
+        $prefix_label   = '<span class="label label-primary label-recurring">' . __('Recurring Payment', 'invoicing') . '</span> ' . wpinv_subscription_payment_desc($invoice);
+    } else if ($invoice->is_renewal()) {
+        $prefix_label   = '<span class="label label-primary label-renewal">' . __('Renewal Payment', 'invoicing') . '</span> ';        
     }
     
-    if ( $prefix_label != '' ) {
-        $label  = '<span class="wpinv-cart-sub-desc">' . $prefix_label . '</span> ' . $label;
+    if ($prefix_label != '') {
+        $label = '<span class="wpinv-cart-sub-desc">' . $prefix_label . '</span> ' . $label;
     }
     
     return $label;
 }
-add_filter( 'wpinv_cart_total_label', 'wpinv_cart_total_label', 10, 2 );
-add_filter( 'wpinv_email_cart_total_label', 'wpinv_cart_total_label', 10, 2 );
-add_filter( 'wpinv_print_cart_total_label', 'wpinv_cart_total_label', 10, 2 );
+add_filter('wpinv_cart_total_label', 'wpinv_cart_total_label', 10, 2);
+add_filter('wpinv_email_cart_total_label', 'wpinv_cart_total_label', 10, 2);
+add_filter('wpinv_print_cart_total_label', 'wpinv_cart_total_label', 10, 2);
 
-add_action( 'wpinv_invoice_print_middle', 'wpinv_invoice_subscription_details', 10, 1 );
+add_action('wpinv_invoice_print_middle', 'wpinv_invoice_subscription_details', 10, 1);
 
-function wpinv_invoice_print_description( $invoice ) {
-    if ( empty( $invoice ) ) {
+function wpinv_invoice_print_description($invoice) {
+    if (empty($invoice)) {
         return NULL;
     }
-    if ( $description = wpinv_get_invoice_description( $invoice->ID ) ) {
+    if ($description = wpinv_get_invoice_description($invoice->ID)) {
         ?>
         <div class="row wpinv-lower">
             <div class="col-sm-12 wpinv-description">
-                <?php echo wpautop( $description ); ?>
+                <?php echo wpautop($description); ?>
             </div>
         </div>
         <?php
     }
 }
-add_action( 'wpinv_invoice_print_middle', 'wpinv_invoice_print_description', 10.1, 1 );
+add_action('wpinv_invoice_print_middle', 'wpinv_invoice_print_description', 10.1, 1);
 
-function wpinv_invoice_print_payment_info( $invoice ) {
-    if ( empty( $invoice ) ) {
+function wpinv_invoice_print_payment_info($invoice) {
+    if (empty($invoice)) {
         return NULL;
     }
     
-    if ( $payments_info = wpinv_display_payments_info( $invoice->ID, false ) ) {
+    if ($payments_info = wpinv_display_payments_info($invoice->ID, false)) {
         ?>
         <div class="row wpinv-payments">
             <div class="col-sm-12">
@@ -2046,43 +2046,43 @@ 
 }
 // add_action( 'wpinv_invoice_print_after_line_items', 'wpinv_invoice_print_payment_info', 10, 1 );
 
-function wpinv_get_invoice_note_line_item( $note, $echo = true ) {
-    if ( empty( $note ) ) {
+function wpinv_get_invoice_note_line_item($note, $echo = true) {
+    if (empty($note)) {
         return NULL;
     }
     
-    if ( is_int( $note ) ) {
-        $note = get_comment( $note );
+    if (is_int($note)) {
+        $note = get_comment($note);
     }
     
-    if ( !( is_object( $note ) && is_a( $note, 'WP_Comment' ) ) ) {
+    if (!(is_object($note) && is_a($note, 'WP_Comment'))) {
         return NULL;
     }
     
-    $note_classes   = array( 'note' );
-    $note_classes[] = get_comment_meta( $note->comment_ID, '_wpi_customer_note', true ) ? 'customer-note' : '';
-    $note_classes[] = $note->comment_author === __( 'System', 'invoicing' ) ? 'system-note' : '';
-    $note_classes   = apply_filters( 'wpinv_invoice_note_class', array_filter( $note_classes ), $note );
-    $note_classes   = !empty( $note_classes ) ? implode( ' ', $note_classes ) : '';
+    $note_classes   = array('note');
+    $note_classes[] = get_comment_meta($note->comment_ID, '_wpi_customer_note', true) ? 'customer-note' : '';
+    $note_classes[] = $note->comment_author === __('System', 'invoicing') ? 'system-note' : '';
+    $note_classes   = apply_filters('wpinv_invoice_note_class', array_filter($note_classes), $note);
+    $note_classes   = !empty($note_classes) ? implode(' ', $note_classes) : '';
     
     ob_start();
     ?>
-    <li rel="<?php echo absint( $note->comment_ID ) ; ?>" class="<?php echo esc_attr( $note_classes ); ?>">
+    <li rel="<?php echo absint($note->comment_ID); ?>" class="<?php echo esc_attr($note_classes); ?>">
         <div class="note_content">
-            <?php echo wpautop( wptexturize( wp_kses_post( $note->comment_content ) ) ); ?>
+            <?php echo wpautop(wptexturize(wp_kses_post($note->comment_content))); ?>
         </div>
         <p class="meta">
-            <abbr class="exact-date" title="<?php echo $note->comment_date; ?>"><?php printf( __( '%1$s - %2$s at %3$s', 'invoicing' ), $note->comment_author, date_i18n( get_option( 'date_format' ), strtotime( $note->comment_date ) ), date_i18n( get_option( 'time_format' ), strtotime( $note->comment_date ) ) ); ?></abbr>&nbsp;&nbsp;
-            <?php if($note->comment_author !== 'System') {?>
-                <a href="#" class="delete_note"><?php _e( 'Delete note', 'invoicing' ); ?></a>
+            <abbr class="exact-date" title="<?php echo $note->comment_date; ?>"><?php printf(__('%1$s - %2$s at %3$s', 'invoicing'), $note->comment_author, date_i18n(get_option('date_format'), strtotime($note->comment_date)), date_i18n(get_option('time_format'), strtotime($note->comment_date))); ?></abbr>&nbsp;&nbsp;
+            <?php if ($note->comment_author !== 'System') {?>
+                <a href="#" class="delete_note"><?php _e('Delete note', 'invoicing'); ?></a>
             <?php } ?>
         </p>
     </li>
     <?php
     $note_content = ob_get_clean();
-    $note_content = apply_filters( 'wpinv_get_invoice_note_line_item', $note_content, $note, $echo );
+    $note_content = apply_filters('wpinv_get_invoice_note_line_item', $note_content, $note, $echo);
     
-    if ( $echo ) {
+    if ($echo) {
         echo $note_content;
     } else {
         return $note_content;
@@ -2092,33 +2092,33 @@ 
 function wpinv_invalid_invoice_content() {
     global $post;
 
-    $invoice = wpinv_get_invoice( $post->ID );
+    $invoice = wpinv_get_invoice($post->ID);
 
-    $error = __( 'This invoice is only viewable by clicking on the invoice link that sent to you via email.', 'invoicing' );
-    if ( !empty( $invoice->ID ) && $invoice->has_status( array_keys( wpinv_get_invoice_statuses() ) ) ) {
-        if ( is_user_logged_in() ) {
-            if ( wpinv_require_login_to_checkout() ) {
-                if ( isset( $_GET['invoice_key'] ) && $_GET['invoice_key'] === $invoice->get_key() ) {
-                    $error = __( 'You are not allowed to view this invoice.', 'invoicing' );
+    $error = __('This invoice is only viewable by clicking on the invoice link that sent to you via email.', 'invoicing');
+    if (!empty($invoice->ID) && $invoice->has_status(array_keys(wpinv_get_invoice_statuses()))) {
+        if (is_user_logged_in()) {
+            if (wpinv_require_login_to_checkout()) {
+                if (isset($_GET['invoice_key']) && $_GET['invoice_key'] === $invoice->get_key()) {
+                    $error = __('You are not allowed to view this invoice.', 'invoicing');
                 }
             }
         } else {
-            if ( wpinv_require_login_to_checkout() ) {
-                if ( isset( $_GET['invoice_key'] ) && $_GET['invoice_key'] === $invoice->get_key() ) {
-                    $error = __( 'You must be logged in to view this invoice.', 'invoicing' );
+            if (wpinv_require_login_to_checkout()) {
+                if (isset($_GET['invoice_key']) && $_GET['invoice_key'] === $invoice->get_key()) {
+                    $error = __('You must be logged in to view this invoice.', 'invoicing');
                 }
             }
         }
     } else {
-        $error = __( 'This invoice is deleted or does not exist.', 'invoicing' );
+        $error = __('This invoice is deleted or does not exist.', 'invoicing');
     }
     ?>
     <div class="row wpinv-row-invalid">
         <div class="col-md-6 col-md-offset-3 wpinv-message error">
-            <h3><?php _e( 'Access Denied', 'invoicing' ); ?></h3>
+            <h3><?php _e('Access Denied', 'invoicing'); ?></h3>
             <p class="wpinv-msg-text"><?php echo $error; ?></p>
         </div>
     </div>
     <?php
 }
-add_action( 'wpinv_invalid_invoice_content', 'wpinv_invalid_invoice_content' );
\ No newline at end of file
+add_action('wpinv_invalid_invoice_content', 'wpinv_invalid_invoice_content');
\ No newline at end of file

includes/wpinv-discount-functions.php

Spacing +472 added lines, -472 removed lines

@@ -7,90 +7,90 @@ 
  */
  
 // MUST have WordPress.
-if ( !defined( 'WPINC' ) ) {
-    exit( 'Do NOT access this file directly: ' . basename( __FILE__ ) );
+if (!defined('WPINC')) {
+    exit('Do NOT access this file directly: ' . basename(__FILE__));
 }
 
 function wpinv_get_discount_types() {
     $discount_types = array(
-                        'percent'   => __( 'Percentage', 'invoicing' ),
-                        'flat'     => __( 'Flat Amount', 'invoicing' ),
+                        'percent'   => __('Percentage', 'invoicing'),
+                        'flat'     => __('Flat Amount', 'invoicing'),
                     );
-    return (array)apply_filters( 'wpinv_discount_types', $discount_types );
+    return (array)apply_filters('wpinv_discount_types', $discount_types);
 }
 
-function wpinv_get_discount_type_name( $type = '' ) {
+function wpinv_get_discount_type_name($type = '') {
     $types = wpinv_get_discount_types();
-    return isset( $types[ $type ] ) ? $types[ $type ] : '';
+    return isset($types[$type]) ? $types[$type] : '';
 }
 
-function wpinv_delete_discount( $data ) {
-    if ( ! isset( $data['_wpnonce'] ) || ! wp_verify_nonce( $data['_wpnonce'], 'wpinv_discount_nonce' ) ) {
-        wp_die( __( 'Trying to cheat or something?', 'invoicing' ), __( 'Error', 'invoicing' ), array( 'response' => 403 ) );
+function wpinv_delete_discount($data) {
+    if (!isset($data['_wpnonce']) || !wp_verify_nonce($data['_wpnonce'], 'wpinv_discount_nonce')) {
+        wp_die(__('Trying to cheat or something?', 'invoicing'), __('Error', 'invoicing'), array('response' => 403));
     }
 
-    if( ! current_user_can( 'manage_options' ) ) {
-        wp_die( __( 'You do not have permission to delete discount codes', 'invoicing' ), __( 'Error', 'invoicing' ), array( 'response' => 403 ) );
+    if (!current_user_can('manage_options')) {
+        wp_die(__('You do not have permission to delete discount codes', 'invoicing'), __('Error', 'invoicing'), array('response' => 403));
     }
 
     $discount_id = $data['discount'];
-    wpinv_remove_discount( $discount_id );
+    wpinv_remove_discount($discount_id);
 }
-add_action( 'wpinv_delete_discount', 'wpinv_delete_discount' );
+add_action('wpinv_delete_discount', 'wpinv_delete_discount');
 
-function wpinv_activate_discount( $data ) {
-    if ( ! isset( $data['_wpnonce'] ) || ! wp_verify_nonce( $data['_wpnonce'], 'wpinv_discount_nonce' ) ) {
-        wp_die( __( 'Trying to cheat or something?', 'invoicing' ), __( 'Error', 'invoicing' ), array( 'response' => 403 ) );
+function wpinv_activate_discount($data) {
+    if (!isset($data['_wpnonce']) || !wp_verify_nonce($data['_wpnonce'], 'wpinv_discount_nonce')) {
+        wp_die(__('Trying to cheat or something?', 'invoicing'), __('Error', 'invoicing'), array('response' => 403));
     }
 
-    if( ! current_user_can( 'manage_options' ) ) {
-        wp_die( __( 'You do not have permission to edit discount codes', 'invoicing' ), __( 'Error', 'invoicing' ), array( 'response' => 403 ) );
+    if (!current_user_can('manage_options')) {
+        wp_die(__('You do not have permission to edit discount codes', 'invoicing'), __('Error', 'invoicing'), array('response' => 403));
     }
 
-    $id = absint( $data['discount'] );
-    wpinv_update_discount_status( $id, 'publish' );
+    $id = absint($data['discount']);
+    wpinv_update_discount_status($id, 'publish');
 }
-add_action( 'wpinv_activate_discount', 'wpinv_activate_discount' );
+add_action('wpinv_activate_discount', 'wpinv_activate_discount');
 
-function wpinv_deactivate_discount( $data ) {
-    if ( ! isset( $data['_wpnonce'] ) || ! wp_verify_nonce( $data['_wpnonce'], 'wpinv_discount_nonce' ) ) {
-        wp_die( __( 'Trying to cheat or something?', 'invoicing' ), __( 'Error', 'invoicing' ), array( 'response' => 403 ) );
+function wpinv_deactivate_discount($data) {
+    if (!isset($data['_wpnonce']) || !wp_verify_nonce($data['_wpnonce'], 'wpinv_discount_nonce')) {
+        wp_die(__('Trying to cheat or something?', 'invoicing'), __('Error', 'invoicing'), array('response' => 403));
     }
 
-    if( ! current_user_can( 'manage_options' ) ) {
-        wp_die( __( 'You do not have permission to create discount codes', 'invoicing' ), array( 'response' => 403 ) );
+    if (!current_user_can('manage_options')) {
+        wp_die(__('You do not have permission to create discount codes', 'invoicing'), array('response' => 403));
     }
 
-    $id = absint( $data['discount'] );
-    wpinv_update_discount_status( $id, 'pending' );
+    $id = absint($data['discount']);
+    wpinv_update_discount_status($id, 'pending');
 }
-add_action( 'wpinv_deactivate_discount', 'wpinv_deactivate_discount' );
+add_action('wpinv_deactivate_discount', 'wpinv_deactivate_discount');
 
-function wpinv_get_discounts( $args = array() ) {
+function wpinv_get_discounts($args = array()) {
     $defaults = array(
         'post_type'      => 'wpi_discount',
         'posts_per_page' => 20,
         'paged'          => null,
-        'post_status'    => array( 'publish', 'pending', 'draft', 'expired' )
+        'post_status'    => array('publish', 'pending', 'draft', 'expired')
     );
 
-    $args = wp_parse_args( $args, $defaults );
+    $args = wp_parse_args($args, $defaults);
 
-    $discounts = get_posts( $args );
+    $discounts = get_posts($args);
 
-    if ( $discounts ) {
+    if ($discounts) {
         return $discounts;
     }
 
-    if( ! $discounts && ! empty( $args['s'] ) ) {
+    if (!$discounts && !empty($args['s'])) {
         $args['meta_key']     = '_wpi_discount_code';
         $args['meta_value']   = $args['s'];
         $args['meta_compare'] = 'LIKE';
-        unset( $args['s'] );
-        $discounts = get_posts( $args );
+        unset($args['s']);
+        $discounts = get_posts($args);
     }
 
-    if( $discounts ) {
+    if ($discounts) {
         return $discounts;
     }
 
@@ -102,9 +102,9 @@ 
 
     $discounts  = wpinv_get_discounts();
 
-    if ( $discounts) {
-        foreach ( $discounts as $discount ) {
-            if ( wpinv_is_discount_active( $discount->ID ) ) {
+    if ($discounts) {
+        foreach ($discounts as $discount) {
+            if (wpinv_is_discount_active($discount->ID)) {
                 $has_active = true;
                 break;
             }
@@ -113,38 +113,38 @@ 
     return $has_active;
 }
 
-function wpinv_get_discount( $discount_id = 0 ) {
-    if( empty( $discount_id ) ) {
+function wpinv_get_discount($discount_id = 0) {
+    if (empty($discount_id)) {
         return false;
     }
     
-    if ( get_post_type( $discount_id ) != 'wpi_discount' ) {
+    if (get_post_type($discount_id) != 'wpi_discount') {
         return false;
     }
 
-    $discount = get_post( $discount_id );
+    $discount = get_post($discount_id);
 
     return $discount;
 }
 
-function wpinv_get_discount_by_code( $code = '' ) {
-    if( empty( $code ) || ! is_string( $code ) ) {
+function wpinv_get_discount_by_code($code = '') {
+    if (empty($code) || !is_string($code)) {
         return false;
     }
 
-    return wpinv_get_discount_by( 'code', $code );
+    return wpinv_get_discount_by('code', $code);
 }
 
-function wpinv_get_discount_by( $field = '', $value = '' ) {
-    if( empty( $field ) || empty( $value ) ) {
+function wpinv_get_discount_by($field = '', $value = '') {
+    if (empty($field) || empty($value)) {
         return false;
     }
 
-    if( ! is_string( $field ) ) {
+    if (!is_string($field)) {
         return false;
     }
 
-    switch( strtolower( $field ) ) {
+    switch (strtolower($field)) {
 
         case 'code':
             $meta_query     = array();
@@ -154,32 +154,32 @@ 
                 'compare' => '='
             );
             
-            $discount = wpinv_get_discounts( array(
+            $discount = wpinv_get_discounts(array(
                 'posts_per_page' => 1,
                 'post_status'    => 'any',
                 'meta_query'     => $meta_query,
-            ) );
+            ));
             
-            if( $discount ) {
+            if ($discount) {
                 $discount = $discount[0];
             }
 
             break;
 
         case 'id':
-            $discount = wpinv_get_discount( $value );
+            $discount = wpinv_get_discount($value);
 
             break;
 
         case 'name':
-            $discount = get_posts( array(
+            $discount = get_posts(array(
                 'post_type'      => 'wpi_discount',
                 'name'           => $value,
                 'posts_per_page' => 1,
                 'post_status'    => 'any'
-            ) );
+            ));
 
-            if( $discount ) {
+            if ($discount) {
                 $discount = $discount[0];
             }
 
@@ -189,99 +189,99 @@ 
             return false;
     }
 
-    if( ! empty( $discount ) ) {
+    if (!empty($discount)) {
         return $discount;
     }
 
     return false;
 }
 
-function wpinv_store_discount( $post_id, $data, $post, $update = false ) {
+function wpinv_store_discount($post_id, $data, $post, $update = false) {
     $meta = array(
-        'code'              => isset( $data['code'] )             ? sanitize_text_field( $data['code'] )              : '',
-        'type'              => isset( $data['type'] )             ? sanitize_text_field( $data['type'] )              : 'percent',
-        'amount'            => isset( $data['amount'] )           ? wpinv_sanitize_amount( $data['amount'] )          : '',
-        'start'             => isset( $data['start'] )            ? sanitize_text_field( $data['start'] )             : '',
-        'expiration'        => isset( $data['expiration'] )       ? sanitize_text_field( $data['expiration'] )        : '',
-        'min_total'         => isset( $data['min_total'] )        ? wpinv_sanitize_amount( $data['min_total'] )       : '',
-        'max_total'         => isset( $data['max_total'] )        ? wpinv_sanitize_amount( $data['max_total'] )       : '',
-        'max_uses'          => isset( $data['max_uses'] )         ? absint( $data['max_uses'] )                       : '',
-        'items'             => isset( $data['items'] )            ? $data['items']                                    : array(),
-        'excluded_items'    => isset( $data['excluded_items'] )   ? $data['excluded_items']                           : array(),
-        'is_recurring'      => isset( $data['recurring'] )        ? (bool)$data['recurring']                          : false,
-        'is_single_use'     => isset( $data['single_use'] )       ? (bool)$data['single_use']                         : false,
-        'uses'              => isset( $data['uses'] )             ? (int)$data['uses']                                : false,
+        'code'              => isset($data['code']) ? sanitize_text_field($data['code']) : '',
+        'type'              => isset($data['type']) ? sanitize_text_field($data['type']) : 'percent',
+        'amount'            => isset($data['amount']) ? wpinv_sanitize_amount($data['amount']) : '',
+        'start'             => isset($data['start']) ? sanitize_text_field($data['start']) : '',
+        'expiration'        => isset($data['expiration']) ? sanitize_text_field($data['expiration']) : '',
+        'min_total'         => isset($data['min_total']) ? wpinv_sanitize_amount($data['min_total']) : '',
+        'max_total'         => isset($data['max_total']) ? wpinv_sanitize_amount($data['max_total']) : '',
+        'max_uses'          => isset($data['max_uses']) ? absint($data['max_uses']) : '',
+        'items'             => isset($data['items']) ? $data['items'] : array(),
+        'excluded_items'    => isset($data['excluded_items']) ? $data['excluded_items'] : array(),
+        'is_recurring'      => isset($data['recurring']) ? (bool)$data['recurring'] : false,
+        'is_single_use'     => isset($data['single_use']) ? (bool)$data['single_use'] : false,
+        'uses'              => isset($data['uses']) ? (int)$data['uses'] : false,
     );
     
-    $start_timestamp        = strtotime( $meta['start'] );
+    $start_timestamp        = strtotime($meta['start']);
 
-    if ( !empty( $meta['start'] ) ) {
-        $meta['start']      = date( 'Y-m-d H:i:s', $start_timestamp );
+    if (!empty($meta['start'])) {
+        $meta['start']      = date('Y-m-d H:i:s', $start_timestamp);
     }
         
-    if ( $meta['type'] == 'percent' && (float)$meta['amount'] > 100 ) {
+    if ($meta['type'] == 'percent' && (float)$meta['amount'] > 100) {
         $meta['amount'] = 100;
     }
 
-    if ( !empty( $meta['expiration'] ) ) {
-        $meta['expiration'] = date( 'Y-m-d H:i:s', strtotime( date( 'Y-m-d', strtotime( $meta['expiration'] ) ) . ' 23:59:59' ) );
-        $end_timestamp      = strtotime( $meta['expiration'] );
+    if (!empty($meta['expiration'])) {
+        $meta['expiration'] = date('Y-m-d H:i:s', strtotime(date('Y-m-d', strtotime($meta['expiration'])) . ' 23:59:59'));
+        $end_timestamp      = strtotime($meta['expiration']);
 
-        if ( !empty( $meta['start'] ) && $start_timestamp > $end_timestamp ) {
+        if (!empty($meta['start']) && $start_timestamp > $end_timestamp) {
             $meta['expiration'] = $meta['start']; // Set the expiration date to the start date if start is later than expiration date.
         }
     }
     
-    if ( $meta['uses'] === false ) {
-        unset( $meta['uses'] );
+    if ($meta['uses'] === false) {
+        unset($meta['uses']);
     }
     
-    if ( ! empty( $meta['items'] ) ) {
-        foreach ( $meta['items'] as $key => $item ) {
-            if ( 0 === intval( $item ) ) {
-                unset( $meta['items'][ $key ] );
+    if (!empty($meta['items'])) {
+        foreach ($meta['items'] as $key => $item) {
+            if (0 === intval($item)) {
+                unset($meta['items'][$key]);
             }
         }
     }
     
-    if ( ! empty( $meta['excluded_items'] ) ) {
-        foreach ( $meta['excluded_items'] as $key => $item ) {
-            if ( 0 === intval( $item ) ) {
-                unset( $meta['excluded_items'][ $key ] );
+    if (!empty($meta['excluded_items'])) {
+        foreach ($meta['excluded_items'] as $key => $item) {
+            if (0 === intval($item)) {
+                unset($meta['excluded_items'][$key]);
             }
         }
     }
     
-    $meta = apply_filters( 'wpinv_update_discount', $meta, $post_id, $post );
+    $meta = apply_filters('wpinv_update_discount', $meta, $post_id, $post);
     
-    do_action( 'wpinv_pre_update_discount', $meta, $post_id, $post );
+    do_action('wpinv_pre_update_discount', $meta, $post_id, $post);
     
-    foreach( $meta as $key => $value ) {
-        update_post_meta( $post_id, '_wpi_discount_' . $key, $value );
+    foreach ($meta as $key => $value) {
+        update_post_meta($post_id, '_wpi_discount_' . $key, $value);
     }
     
-    do_action( 'wpinv_post_update_discount', $meta, $post_id, $post );
+    do_action('wpinv_post_update_discount', $meta, $post_id, $post);
     
     return $post_id;
 }
 
-function wpinv_remove_discount( $discount_id = 0 ) {
-    do_action( 'wpinv_pre_delete_discount', $discount_id );
+function wpinv_remove_discount($discount_id = 0) {
+    do_action('wpinv_pre_delete_discount', $discount_id);
 
-    wp_delete_post( $discount_id, true );
+    wp_delete_post($discount_id, true);
 
-    do_action( 'wpinv_post_delete_discount', $discount_id );
+    do_action('wpinv_post_delete_discount', $discount_id);
 }
 
-function wpinv_update_discount_status( $code_id = 0, $new_status = 'publish' ) {
-    $discount = wpinv_get_discount(  $code_id );
+function wpinv_update_discount_status($code_id = 0, $new_status = 'publish') {
+    $discount = wpinv_get_discount($code_id);
 
-    if ( $discount ) {
-        do_action( 'wpinv_pre_update_discount_status', $code_id, $new_status, $discount->post_status );
+    if ($discount) {
+        do_action('wpinv_pre_update_discount_status', $code_id, $new_status, $discount->post_status);
 
-        wp_update_post( array( 'ID' => $code_id, 'post_status' => $new_status ) );
+        wp_update_post(array('ID' => $code_id, 'post_status' => $new_status));
 
-        do_action( 'wpinv_post_update_discount_status', $code_id, $new_status, $discount->post_status );
+        do_action('wpinv_post_update_discount_status', $code_id, $new_status, $discount->post_status);
 
         return true;
     }
@@ -289,173 +289,173 @@ 
     return false;
 }
 
-function wpinv_discount_exists( $code_id ) {
-    if ( wpinv_get_discount(  $code_id ) ) {
+function wpinv_discount_exists($code_id) {
+    if (wpinv_get_discount($code_id)) {
         return true;
     }
 
     return false;
 }
 
-function wpinv_is_discount_active( $code_id = null ) {
-    $discount = wpinv_get_discount(  $code_id );
+function wpinv_is_discount_active($code_id = null) {
+    $discount = wpinv_get_discount($code_id);
     $return   = false;
 
-    if ( $discount ) {
-        if ( wpinv_is_discount_expired( $code_id ) ) {
-            if( defined( 'DOING_AJAX' ) ) {
-                wpinv_set_error( 'wpinv-discount-error', __( 'This discount is expired.', 'invoicing' ) );
+    if ($discount) {
+        if (wpinv_is_discount_expired($code_id)) {
+            if (defined('DOING_AJAX')) {
+                wpinv_set_error('wpinv-discount-error', __('This discount is expired.', 'invoicing'));
             }
-        } elseif ( $discount->post_status == 'publish' ) {
+        } elseif ($discount->post_status == 'publish') {
             $return = true;
         } else {
-            if( defined( 'DOING_AJAX' ) ) {
-                wpinv_set_error( 'wpinv-discount-error', __( 'This discount is not active.', 'invoicing' ) );
+            if (defined('DOING_AJAX')) {
+                wpinv_set_error('wpinv-discount-error', __('This discount is not active.', 'invoicing'));
             }
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_active', $return, $code_id );
+    return apply_filters('wpinv_is_discount_active', $return, $code_id);
 }
 
-function wpinv_get_discount_code( $code_id = null ) {
-    $code = get_post_meta( $code_id, '_wpi_discount_code', true );
+function wpinv_get_discount_code($code_id = null) {
+    $code = get_post_meta($code_id, '_wpi_discount_code', true);
 
-    return apply_filters( 'wpinv_get_discount_code', $code, $code_id );
+    return apply_filters('wpinv_get_discount_code', $code, $code_id);
 }
 
-function wpinv_get_discount_start_date( $code_id = null ) {
-    $start_date = get_post_meta( $code_id, '_wpi_discount_start', true );
+function wpinv_get_discount_start_date($code_id = null) {
+    $start_date = get_post_meta($code_id, '_wpi_discount_start', true);
 
-    return apply_filters( 'wpinv_get_discount_start_date', $start_date, $code_id );
+    return apply_filters('wpinv_get_discount_start_date', $start_date, $code_id);
 }
 
-function wpinv_get_discount_expiration( $code_id = null ) {
-    $expiration = get_post_meta( $code_id, '_wpi_discount_expiration', true );
+function wpinv_get_discount_expiration($code_id = null) {
+    $expiration = get_post_meta($code_id, '_wpi_discount_expiration', true);
 
-    return apply_filters( 'wpinv_get_discount_expiration', $expiration, $code_id );
+    return apply_filters('wpinv_get_discount_expiration', $expiration, $code_id);
 }
 
-function wpinv_get_discount_max_uses( $code_id = null ) {
-    $max_uses = get_post_meta( $code_id, '_wpi_discount_max_uses', true );
+function wpinv_get_discount_max_uses($code_id = null) {
+    $max_uses = get_post_meta($code_id, '_wpi_discount_max_uses', true);
 
-    return (int) apply_filters( 'wpinv_get_discount_max_uses', $max_uses, $code_id );
+    return (int)apply_filters('wpinv_get_discount_max_uses', $max_uses, $code_id);
 }
 
-function wpinv_get_discount_uses( $code_id = null ) {
-    $uses = get_post_meta( $code_id, '_wpi_discount_uses', true );
+function wpinv_get_discount_uses($code_id = null) {
+    $uses = get_post_meta($code_id, '_wpi_discount_uses', true);
 
-    return (int) apply_filters( 'wpinv_get_discount_uses', $uses, $code_id );
+    return (int)apply_filters('wpinv_get_discount_uses', $uses, $code_id);
 }
 
-function wpinv_get_discount_min_total( $code_id = null ) {
-    $min_total = get_post_meta( $code_id, '_wpi_discount_min_total', true );
+function wpinv_get_discount_min_total($code_id = null) {
+    $min_total = get_post_meta($code_id, '_wpi_discount_min_total', true);
 
-    return (float) apply_filters( 'wpinv_get_discount_min_total', $min_total, $code_id );
+    return (float)apply_filters('wpinv_get_discount_min_total', $min_total, $code_id);
 }
 
-function wpinv_get_discount_max_total( $code_id = null ) {
-    $max_total = get_post_meta( $code_id, '_wpi_discount_max_total', true );
+function wpinv_get_discount_max_total($code_id = null) {
+    $max_total = get_post_meta($code_id, '_wpi_discount_max_total', true);
 
-    return (float) apply_filters( 'wpinv_get_discount_max_total', $max_total, $code_id );
+    return (float)apply_filters('wpinv_get_discount_max_total', $max_total, $code_id);
 }
 
-function wpinv_get_discount_amount( $code_id = null ) {
-    $amount = get_post_meta( $code_id, '_wpi_discount_amount', true );
+function wpinv_get_discount_amount($code_id = null) {
+    $amount = get_post_meta($code_id, '_wpi_discount_amount', true);
 
-    return (float) apply_filters( 'wpinv_get_discount_amount', $amount, $code_id );
+    return (float)apply_filters('wpinv_get_discount_amount', $amount, $code_id);
 }
 
-function wpinv_get_discount_type( $code_id = null, $name = false ) {
-    $type = strtolower( get_post_meta( $code_id, '_wpi_discount_type', true ) );
+function wpinv_get_discount_type($code_id = null, $name = false) {
+    $type = strtolower(get_post_meta($code_id, '_wpi_discount_type', true));
     
-    if ( $name ) {
-        $name = wpinv_get_discount_type_name( $type );
+    if ($name) {
+        $name = wpinv_get_discount_type_name($type);
         
-        return apply_filters( 'wpinv_get_discount_type_name', $name, $code_id );
+        return apply_filters('wpinv_get_discount_type_name', $name, $code_id);
     }
 
-    return apply_filters( 'wpinv_get_discount_type', $type, $code_id );
+    return apply_filters('wpinv_get_discount_type', $type, $code_id);
 }
 
-function wpinv_discount_status( $status ) {
-    switch( $status ){
+function wpinv_discount_status($status) {
+    switch ($status) {
         case 'expired' :
-            $name = __( 'Expired', 'invoicing' );
+            $name = __('Expired', 'invoicing');
             break;
         case 'publish' :
         case 'active' :
-            $name = __( 'Active', 'invoicing' );
+            $name = __('Active', 'invoicing');
             break;
         default :
-            $name = __( 'Inactive', 'invoicing' );
+            $name = __('Inactive', 'invoicing');
             break;
     }
     return $name;
 }
 
-function wpinv_get_discount_excluded_items( $code_id = null ) {
-    $excluded_items = get_post_meta( $code_id, '_wpi_discount_excluded_items', true );
+function wpinv_get_discount_excluded_items($code_id = null) {
+    $excluded_items = get_post_meta($code_id, '_wpi_discount_excluded_items', true);
 
-    if ( empty( $excluded_items ) || ! is_array( $excluded_items ) ) {
+    if (empty($excluded_items) || !is_array($excluded_items)) {
         $excluded_items = array();
     }
 
-    return (array) apply_filters( 'wpinv_get_discount_excluded_items', $excluded_items, $code_id );
+    return (array)apply_filters('wpinv_get_discount_excluded_items', $excluded_items, $code_id);
 }
 
-function wpinv_get_discount_item_reqs( $code_id = null ) {
-    $item_reqs = get_post_meta( $code_id, '_wpi_discount_items', true );
+function wpinv_get_discount_item_reqs($code_id = null) {
+    $item_reqs = get_post_meta($code_id, '_wpi_discount_items', true);
 
-    if ( empty( $item_reqs ) || ! is_array( $item_reqs ) ) {
+    if (empty($item_reqs) || !is_array($item_reqs)) {
         $item_reqs = array();
     }
 
-    return (array) apply_filters( 'wpinv_get_discount_item_reqs', $item_reqs, $code_id );
+    return (array)apply_filters('wpinv_get_discount_item_reqs', $item_reqs, $code_id);
 }
 
-function wpinv_get_discount_item_condition( $code_id = 0 ) {
-    return get_post_meta( $code_id, '_wpi_discount_item_condition', true );
+function wpinv_get_discount_item_condition($code_id = 0) {
+    return get_post_meta($code_id, '_wpi_discount_item_condition', true);
 }
 
-function wpinv_is_discount_not_global( $code_id = 0 ) {
-    return (bool) get_post_meta( $code_id, '_wpi_discount_is_not_global', true );
+function wpinv_is_discount_not_global($code_id = 0) {
+    return (bool)get_post_meta($code_id, '_wpi_discount_is_not_global', true);
 }
 
-function wpinv_is_discount_expired( $code_id = null ) {
-    $discount = wpinv_get_discount(  $code_id );
+function wpinv_is_discount_expired($code_id = null) {
+    $discount = wpinv_get_discount($code_id);
     $return   = false;
 
-    if ( $discount ) {
-        $expiration = wpinv_get_discount_expiration( $code_id );
-        if ( $expiration ) {
-            $expiration = strtotime( $expiration );
-            if ( $expiration < current_time( 'timestamp' ) ) {
+    if ($discount) {
+        $expiration = wpinv_get_discount_expiration($code_id);
+        if ($expiration) {
+            $expiration = strtotime($expiration);
+            if ($expiration < current_time('timestamp')) {
                 // Discount is expired
-                wpinv_update_discount_status( $code_id, 'pending' );
+                wpinv_update_discount_status($code_id, 'pending');
                 $return = true;
             }
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_expired', $return, $code_id );
+    return apply_filters('wpinv_is_discount_expired', $return, $code_id);
 }
 
-function wpinv_is_discount_started( $code_id = null ) {
-    $discount = wpinv_get_discount(  $code_id );
+function wpinv_is_discount_started($code_id = null) {
+    $discount = wpinv_get_discount($code_id);
     $return   = false;
 
-    if ( $discount ) {
-        $start_date = wpinv_get_discount_start_date( $code_id );
+    if ($discount) {
+        $start_date = wpinv_get_discount_start_date($code_id);
 
-        if ( $start_date ) {
-            $start_date = strtotime( $start_date );
+        if ($start_date) {
+            $start_date = strtotime($start_date);
 
-            if ( $start_date < current_time( 'timestamp' ) ) {
+            if ($start_date < current_time('timestamp')) {
                 // Discount has past the start date
                 $return = true;
             } else {
-                wpinv_set_error( 'wpinv-discount-error', __( 'This discount is not active yet.', 'invoicing' ) );
+                wpinv_set_error('wpinv-discount-error', __('This discount is not active yet.', 'invoicing'));
             }
         } else {
             // No start date for this discount, so has to be true
@@ -463,159 +463,159 @@ 
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_started', $return, $code_id );
+    return apply_filters('wpinv_is_discount_started', $return, $code_id);
 }
 
-function wpinv_check_discount_dates( $code_id = null ) {
-    $discount = wpinv_get_discount(  $code_id );
+function wpinv_check_discount_dates($code_id = null) {
+    $discount = wpinv_get_discount($code_id);
     $return   = false;
 
-    if ( $discount ) {
-        $start_date = wpinv_get_discount_start_date( $code_id );
+    if ($discount) {
+        $start_date = wpinv_get_discount_start_date($code_id);
 
-        if ( $start_date ) {
-            $start_date = strtotime( $start_date );
+        if ($start_date) {
+            $start_date = strtotime($start_date);
 
-            if ( $start_date < current_time( 'timestamp' ) ) {
+            if ($start_date < current_time('timestamp')) {
                 // Discount has past the start date
                 $return = true;
             } else {
-                wpinv_set_error( 'wpinv-discount-error', __( 'This discount is not active yet.', 'invoicing' ) );
+                wpinv_set_error('wpinv-discount-error', __('This discount is not active yet.', 'invoicing'));
             }
         } else {
             // No start date for this discount, so has to be true
             $return = true;
         }
         
-        if ( $return ) {
-            $expiration = wpinv_get_discount_expiration( $code_id );
+        if ($return) {
+            $expiration = wpinv_get_discount_expiration($code_id);
             
-            if ( $expiration ) {
-                $expiration = strtotime( $expiration );
-                if ( $expiration < current_time( 'timestamp' ) ) {
+            if ($expiration) {
+                $expiration = strtotime($expiration);
+                if ($expiration < current_time('timestamp')) {
                     // Discount is expired
-                    wpinv_update_discount_status( $code_id, 'pending' );
+                    wpinv_update_discount_status($code_id, 'pending');
                     $return = true;
                 }
             }
         }
     }
     
-    return apply_filters( 'wpinv_check_discount_dates', $return, $code_id );
+    return apply_filters('wpinv_check_discount_dates', $return, $code_id);
 }
 
-function wpinv_is_discount_maxed_out( $code_id = null ) {
-    $discount = wpinv_get_discount(  $code_id );
+function wpinv_is_discount_maxed_out($code_id = null) {
+    $discount = wpinv_get_discount($code_id);
     $return   = false;
 
-    if ( $discount ) {
-        $uses = wpinv_get_discount_uses( $code_id );
+    if ($discount) {
+        $uses = wpinv_get_discount_uses($code_id);
         // Large number that will never be reached
-        $max_uses = wpinv_get_discount_max_uses( $code_id );
+        $max_uses = wpinv_get_discount_max_uses($code_id);
         // Should never be greater than, but just in case
-        if ( $uses >= $max_uses && ! empty( $max_uses ) ) {
+        if ($uses >= $max_uses && !empty($max_uses)) {
             // Discount is maxed out
-            wpinv_set_error( 'wpinv-discount-error', __( 'This discount has reached its maximum usage.', 'invoicing' ) );
+            wpinv_set_error('wpinv-discount-error', __('This discount has reached its maximum usage.', 'invoicing'));
             $return = true;
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_maxed_out', $return, $code_id );
+    return apply_filters('wpinv_is_discount_maxed_out', $return, $code_id);
 }
 
-function wpinv_discount_is_min_met( $code_id = null ) {
-    $discount = wpinv_get_discount( $code_id );
+function wpinv_discount_is_min_met($code_id = null) {
+    $discount = wpinv_get_discount($code_id);
     $return   = false;
 
-    if ( $discount ) {
-        $min         = (float)wpinv_get_discount_min_total( $code_id );
-        $cart_amount = (float)wpinv_get_cart_discountable_subtotal( $code_id );
+    if ($discount) {
+        $min         = (float)wpinv_get_discount_min_total($code_id);
+        $cart_amount = (float)wpinv_get_cart_discountable_subtotal($code_id);
 
-        if ( !$min > 0 || $cart_amount >= $min ) {
+        if (!$min > 0 || $cart_amount >= $min) {
             // Minimum has been met
             $return = true;
         } else {
-            wpinv_set_error( 'wpinv-discount-error', sprintf( __( 'Minimum invoice of %s not met.', 'invoicing' ), wpinv_price( wpinv_format_amount( $min ) ) ) );
+            wpinv_set_error('wpinv-discount-error', sprintf(__('Minimum invoice of %s not met.', 'invoicing'), wpinv_price(wpinv_format_amount($min))));
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_min_met', $return, $code_id );
+    return apply_filters('wpinv_is_discount_min_met', $return, $code_id);
 }
 
-function wpinv_discount_is_max_met( $code_id = null ) {
-    $discount = wpinv_get_discount( $code_id );
+function wpinv_discount_is_max_met($code_id = null) {
+    $discount = wpinv_get_discount($code_id);
     $return   = false;
 
-    if ( $discount ) {
-        $max         = (float)wpinv_get_discount_max_total( $code_id );
-        $cart_amount = (float)wpinv_get_cart_discountable_subtotal( $code_id );
+    if ($discount) {
+        $max         = (float)wpinv_get_discount_max_total($code_id);
+        $cart_amount = (float)wpinv_get_cart_discountable_subtotal($code_id);
 
-        if ( !$max > 0 || $cart_amount <= $max ) {
+        if (!$max > 0 || $cart_amount <= $max) {
             // Minimum has been met
             $return = true;
         } else {
-            wpinv_set_error( 'wpinv-discount-error', sprintf( __( 'Maximum invoice of %s not met.', 'invoicing' ), wpinv_price( wpinv_format_amount( $max ) ) ) );
+            wpinv_set_error('wpinv-discount-error', sprintf(__('Maximum invoice of %s not met.', 'invoicing'), wpinv_price(wpinv_format_amount($max))));
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_max_met', $return, $code_id );
+    return apply_filters('wpinv_is_discount_max_met', $return, $code_id);
 }
 
-function wpinv_discount_is_single_use( $code_id = 0 ) {
-    $single_use = get_post_meta( $code_id, '_wpi_discount_is_single_use', true );
-    return (bool) apply_filters( 'wpinv_is_discount_single_use', $single_use, $code_id );
+function wpinv_discount_is_single_use($code_id = 0) {
+    $single_use = get_post_meta($code_id, '_wpi_discount_is_single_use', true);
+    return (bool)apply_filters('wpinv_is_discount_single_use', $single_use, $code_id);
 }
 
-function wpinv_discount_is_recurring( $code_id = 0, $code = false ) {
-    if ( $code ) {
-        $discount = wpinv_get_discount_by_code( $code_id );
+function wpinv_discount_is_recurring($code_id = 0, $code = false) {
+    if ($code) {
+        $discount = wpinv_get_discount_by_code($code_id);
         
-        if ( !empty( $discount ) ) {
+        if (!empty($discount)) {
             $code_id = $discount->ID;
         }
     }
     
-    $recurring = get_post_meta( $code_id, '_wpi_discount_is_recurring', true );
+    $recurring = get_post_meta($code_id, '_wpi_discount_is_recurring', true);
     
-    return (bool) apply_filters( 'wpinv_is_discount_recurring', $recurring, $code_id, $code );
+    return (bool)apply_filters('wpinv_is_discount_recurring', $recurring, $code_id, $code);
 }
 
-function wpinv_discount_item_reqs_met( $code_id = null ) {
-    $item_reqs    = wpinv_get_discount_item_reqs( $code_id );
-    $condition    = wpinv_get_discount_item_condition( $code_id );
-    $excluded_ps  = wpinv_get_discount_excluded_items( $code_id );
+function wpinv_discount_item_reqs_met($code_id = null) {
+    $item_reqs    = wpinv_get_discount_item_reqs($code_id);
+    $condition    = wpinv_get_discount_item_condition($code_id);
+    $excluded_ps  = wpinv_get_discount_excluded_items($code_id);
     $cart_items   = wpinv_get_cart_contents();
-    $cart_ids     = $cart_items ? wp_list_pluck( $cart_items, 'id' ) : null;
+    $cart_ids     = $cart_items ? wp_list_pluck($cart_items, 'id') : null;
     $ret          = false;
 
-    if ( empty( $item_reqs ) && empty( $excluded_ps ) ) {
+    if (empty($item_reqs) && empty($excluded_ps)) {
         $ret = true;
     }
 
     // Normalize our data for item requirements, exclusions and cart data
     // First absint the items, then sort, and reset the array keys
-    $item_reqs = array_map( 'absint', $item_reqs );
-    asort( $item_reqs );
-    $item_reqs = array_values( $item_reqs );
+    $item_reqs = array_map('absint', $item_reqs);
+    asort($item_reqs);
+    $item_reqs = array_values($item_reqs);
 
-    $excluded_ps  = array_map( 'absint', $excluded_ps );
-    asort( $excluded_ps );
-    $excluded_ps  = array_values( $excluded_ps );
+    $excluded_ps  = array_map('absint', $excluded_ps);
+    asort($excluded_ps);
+    $excluded_ps  = array_values($excluded_ps);
 
-    $cart_ids     = array_map( 'absint', $cart_ids );
-    asort( $cart_ids );
-    $cart_ids     = array_values( $cart_ids );
+    $cart_ids     = array_map('absint', $cart_ids);
+    asort($cart_ids);
+    $cart_ids     = array_values($cart_ids);
 
     // Ensure we have requirements before proceeding
-    if ( !$ret && ! empty( $item_reqs ) ) {
-        switch( $condition ) {
+    if (!$ret && !empty($item_reqs)) {
+        switch ($condition) {
             case 'all' :
                 // Default back to true
                 $ret = true;
 
-                foreach ( $item_reqs as $item_id ) {
-                    if ( !wpinv_item_in_cart( $item_id ) ) {
-                        wpinv_set_error( 'wpinv-discount-error', __( 'The item requirements for this discount are not met.', 'invoicing' ) );
+                foreach ($item_reqs as $item_id) {
+                    if (!wpinv_item_in_cart($item_id)) {
+                        wpinv_set_error('wpinv-discount-error', __('The item requirements for this discount are not met.', 'invoicing'));
                         $ret = false;
                         break;
                     }
@@ -624,15 +624,15 @@ 
                 break;
 
             default : // Any
-                foreach ( $item_reqs as $item_id ) {
-                    if ( wpinv_item_in_cart( $item_id ) ) {
+                foreach ($item_reqs as $item_id) {
+                    if (wpinv_item_in_cart($item_id)) {
                         $ret = true;
                         break;
                     }
                 }
 
-                if( ! $ret ) {
-                    wpinv_set_error( 'wpinv-discount-error', __( 'The item requirements for this discount are not met.', 'invoicing' ) );
+                if (!$ret) {
+                    wpinv_set_error('wpinv-discount-error', __('The item requirements for this discount are not met.', 'invoicing'));
                 }
 
                 break;
@@ -641,70 +641,70 @@ 
         $ret = true;
     }
 
-    if( ! empty( $excluded_ps ) ) {
+    if (!empty($excluded_ps)) {
         // Check that there are items other than excluded ones in the cart
-        if( $cart_ids == $excluded_ps ) {
-            wpinv_set_error( 'wpinv-discount-error', __( 'This discount is not valid for the cart contents.', 'invoicing' ) );
+        if ($cart_ids == $excluded_ps) {
+            wpinv_set_error('wpinv-discount-error', __('This discount is not valid for the cart contents.', 'invoicing'));
             $ret = false;
         }
     }
 
-    return (bool) apply_filters( 'wpinv_is_discount_item_req_met', $ret, $code_id, $condition );
+    return (bool)apply_filters('wpinv_is_discount_item_req_met', $ret, $code_id, $condition);
 }
 
-function wpinv_is_discount_used( $code = null, $user = '', $code_id = 0 ) {
+function wpinv_is_discount_used($code = null, $user = '', $code_id = 0) {
     global $wpi_checkout_id;
     
     $return = false;
 
-    if ( empty( $code_id ) ) {
-        $code_id = wpinv_get_discount_id_by_code( $code );
+    if (empty($code_id)) {
+        $code_id = wpinv_get_discount_id_by_code($code);
         
-        if( empty( $code_id ) ) {
+        if (empty($code_id)) {
             return false; // No discount was found
         }
     }
 
-    if ( wpinv_discount_is_single_use( $code_id ) ) {
+    if (wpinv_discount_is_single_use($code_id)) {
         $payments = array();
 
         $user_id = 0;
-        if ( is_int( $user ) ) {
-            $user_id = absint( $user );
-        } else if ( is_email( $user ) && $user_data = get_user_by( 'email', $user ) ) {
+        if (is_int($user)) {
+            $user_id = absint($user);
+        } else if (is_email($user) && $user_data = get_user_by('email', $user)) {
             $user_id = $user_data->ID;
-        } else if ( $user_data = get_user_by( 'login', $user ) ) {
+        } else if ($user_data = get_user_by('login', $user)) {
             $user_id = $user_data->ID;
-        } else if ( absint( $user ) > 0 ) {
-            $user_id = absint( $user );
+        } else if (absint($user) > 0) {
+            $user_id = absint($user);
         }
 
-        if ( !empty( $user_id ) ) {
-            $query    = array( 'user' => $user_id, 'limit' => false );
-            $payments = wpinv_get_invoices( $query ); // Get all payments with matching user id
+        if (!empty($user_id)) {
+            $query    = array('user' => $user_id, 'limit' => false);
+            $payments = wpinv_get_invoices($query); // Get all payments with matching user id
         }
 
-        if ( $payments ) {
-            foreach ( $payments as $payment ) {
+        if ($payments) {
+            foreach ($payments as $payment) {
                 // Don't count discount used for current invoice chekcout.
-                if ( !empty( $wpi_checkout_id ) && $wpi_checkout_id == $payment->ID ) {
+                if (!empty($wpi_checkout_id) && $wpi_checkout_id == $payment->ID) {
                     continue;
                 }
                 
-                if ( $payment->has_status( array( 'wpi-cancelled', 'wpi-failed' ) ) ) {
+                if ($payment->has_status(array('wpi-cancelled', 'wpi-failed'))) {
                     continue;
                 }
 
-                $discounts = $payment->get_discounts( true );
-                if ( empty( $discounts ) ) {
+                $discounts = $payment->get_discounts(true);
+                if (empty($discounts)) {
                     continue;
                 }
 
-                $discounts = $discounts && !is_array( $discounts ) ? explode( ',', $discounts ) : $discounts;
+                $discounts = $discounts && !is_array($discounts) ? explode(',', $discounts) : $discounts;
 
-                if ( !empty( $discounts ) && is_array( $discounts ) ) {
-                    if ( in_array( strtolower( $code ), array_map( 'strtolower', $discounts ) ) ) {
-                        wpinv_set_error( 'wpinv-discount-error', __( 'This discount has already been redeemed.', 'invoicing' ) );
+                if (!empty($discounts) && is_array($discounts)) {
+                    if (in_array(strtolower($code), array_map('strtolower', $discounts))) {
+                        wpinv_set_error('wpinv-discount-error', __('This discount has already been redeemed.', 'invoicing'));
                         $return = true;
                         break;
                     }
@@ -713,61 +713,61 @@ 
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_used', $return, $code, $user );
+    return apply_filters('wpinv_is_discount_used', $return, $code, $user);
 }
 
-function wpinv_is_discount_valid( $code = '', $user = '', $set_error = true ) {
+function wpinv_is_discount_valid($code = '', $user = '', $set_error = true) {
     $return      = false;
-    $discount_id = wpinv_get_discount_id_by_code( $code );
-    $user        = trim( $user );
+    $discount_id = wpinv_get_discount_id_by_code($code);
+    $user        = trim($user);
 
-    if ( wpinv_get_cart_contents() ) {
-        if ( $discount_id ) {
+    if (wpinv_get_cart_contents()) {
+        if ($discount_id) {
             if (
-                wpinv_is_discount_active( $discount_id ) &&
-                wpinv_check_discount_dates( $discount_id ) &&
-                !wpinv_is_discount_maxed_out( $discount_id ) &&
-                !wpinv_is_discount_used( $code, $user, $discount_id ) &&
-                wpinv_discount_is_min_met( $discount_id ) &&
-                wpinv_discount_is_max_met( $discount_id ) &&
-                wpinv_discount_item_reqs_met( $discount_id )
+                wpinv_is_discount_active($discount_id) &&
+                wpinv_check_discount_dates($discount_id) &&
+                !wpinv_is_discount_maxed_out($discount_id) &&
+                !wpinv_is_discount_used($code, $user, $discount_id) &&
+                wpinv_discount_is_min_met($discount_id) &&
+                wpinv_discount_is_max_met($discount_id) &&
+                wpinv_discount_item_reqs_met($discount_id)
             ) {
                 $return = true;
             }
-        } elseif( $set_error ) {
-            wpinv_set_error( 'wpinv-discount-error', __( 'This discount is invalid.', 'invoicing' ) );
+        } elseif ($set_error) {
+            wpinv_set_error('wpinv-discount-error', __('This discount is invalid.', 'invoicing'));
         }
     }
 
-    return apply_filters( 'wpinv_is_discount_valid', $return, $discount_id, $code, $user );
+    return apply_filters('wpinv_is_discount_valid', $return, $discount_id, $code, $user);
 }
 
-function wpinv_get_discount_id_by_code( $code ) {
-    $discount = wpinv_get_discount_by_code( $code );
-    if( $discount ) {
+function wpinv_get_discount_id_by_code($code) {
+    $discount = wpinv_get_discount_by_code($code);
+    if ($discount) {
         return $discount->ID;
     }
     return false;
 }
 
-function wpinv_get_discounted_amount( $code, $base_price ) {
+function wpinv_get_discounted_amount($code, $base_price) {
     $amount      = $base_price;
-    $discount_id = wpinv_get_discount_id_by_code( $code );
+    $discount_id = wpinv_get_discount_id_by_code($code);
 
-    if( $discount_id ) {
-        $type        = wpinv_get_discount_type( $discount_id );
-        $rate        = wpinv_get_discount_amount( $discount_id );
+    if ($discount_id) {
+        $type        = wpinv_get_discount_type($discount_id);
+        $rate        = wpinv_get_discount_amount($discount_id);
 
-        if ( $type == 'flat' ) {
+        if ($type == 'flat') {
             // Set amount
             $amount = $base_price - $rate;
-            if ( $amount < 0 ) {
+            if ($amount < 0) {
                 $amount = 0;
             }
 
         } else {
             // Percentage discount
-            $amount = $base_price - ( $base_price * ( $rate / 100 ) );
+            $amount = $base_price - ($base_price * ($rate / 100));
         }
 
     } else {
@@ -776,108 +776,108 @@ 
 
     }
 
-    return apply_filters( 'wpinv_discounted_amount', $amount );
+    return apply_filters('wpinv_discounted_amount', $amount);
 }
 
-function wpinv_increase_discount_usage( $code ) {
+function wpinv_increase_discount_usage($code) {
 
-    $id   = wpinv_get_discount_id_by_code( $code );
-    $uses = wpinv_get_discount_uses( $id );
+    $id   = wpinv_get_discount_id_by_code($code);
+    $uses = wpinv_get_discount_uses($id);
 
-    if ( $uses ) {
+    if ($uses) {
         $uses++;
     } else {
         $uses = 1;
     }
 
-    update_post_meta( $id, '_wpi_discount_uses', $uses );
+    update_post_meta($id, '_wpi_discount_uses', $uses);
 
-    do_action( 'wpinv_discount_increase_use_count', $uses, $id, $code );
+    do_action('wpinv_discount_increase_use_count', $uses, $id, $code);
 
     return $uses;
 
 }
 
-function wpinv_decrease_discount_usage( $code ) {
+function wpinv_decrease_discount_usage($code) {
 
-    $id   = wpinv_get_discount_id_by_code( $code );
-    $uses = wpinv_get_discount_uses( $id );
+    $id   = wpinv_get_discount_id_by_code($code);
+    $uses = wpinv_get_discount_uses($id);
 
-    if ( $uses ) {
+    if ($uses) {
         $uses--;
     }
 
-    if ( $uses < 0 ) {
+    if ($uses < 0) {
         $uses = 0;
     }
 
-    update_post_meta( $id, '_wpi_discount_uses', $uses );
+    update_post_meta($id, '_wpi_discount_uses', $uses);
 
-    do_action( 'wpinv_discount_decrease_use_count', $uses, $id, $code );
+    do_action('wpinv_discount_decrease_use_count', $uses, $id, $code);
 
     return $uses;
 
 }
 
-function wpinv_format_discount_rate( $type, $amount ) {
-    if ( $type == 'flat' ) {
-        return wpinv_price( wpinv_format_amount( $amount ) );
+function wpinv_format_discount_rate($type, $amount) {
+    if ($type == 'flat') {
+        return wpinv_price(wpinv_format_amount($amount));
     } else {
         return $amount . '%';
     }
 }
 
-function wpinv_set_cart_discount( $code = '' ) {    
-    if ( wpinv_multiple_discounts_allowed() ) {
+function wpinv_set_cart_discount($code = '') {    
+    if (wpinv_multiple_discounts_allowed()) {
         // Get all active cart discounts
         $discounts = wpinv_get_cart_discounts();
     } else {
         $discounts = false; // Only one discount allowed per purchase, so override any existing
     }
 
-    if ( $discounts ) {
-        $key = array_search( strtolower( $code ), array_map( 'strtolower', $discounts ) );
-        if( false !== $key ) {
-            unset( $discounts[ $key ] ); // Can't set the same discount more than once
+    if ($discounts) {
+        $key = array_search(strtolower($code), array_map('strtolower', $discounts));
+        if (false !== $key) {
+            unset($discounts[$key]); // Can't set the same discount more than once
         }
         $discounts[] = $code;
     } else {
         $discounts = array();
         $discounts[] = $code;
     }
-    $discounts = array_values( $discounts );
+    $discounts = array_values($discounts);
     
     $data = wpinv_get_checkout_session();
-    if ( empty( $data ) ) {
+    if (empty($data)) {
         $data = array();
     } else {
-        if ( !empty( $data['invoice_id'] ) && $payment_meta = wpinv_get_invoice_meta( $data['invoice_id'] ) ) {
-            $payment_meta['user_info']['discount']  = implode( ',', $discounts );
-            update_post_meta( $data['invoice_id'], '_wpinv_payment_meta', $payment_meta );
+        if (!empty($data['invoice_id']) && $payment_meta = wpinv_get_invoice_meta($data['invoice_id'])) {
+            $payment_meta['user_info']['discount'] = implode(',', $discounts);
+            update_post_meta($data['invoice_id'], '_wpinv_payment_meta', $payment_meta);
         }
     }
     $data['cart_discounts'] = $discounts;
     
-    wpinv_set_checkout_session( $data );
+    wpinv_set_checkout_session($data);
     
     return $discounts;
 }
 
-function wpinv_unset_cart_discount( $code = '' ) {    
+function wpinv_unset_cart_discount($code = '') {    
     $discounts = wpinv_get_cart_discounts();
 
-    if ( $code && !empty( $discounts ) && in_array( $code, $discounts ) ) {
-        $key = array_search( $code, $discounts );
-        unset( $discounts[ $key ] );
+    if ($code && !empty($discounts) && in_array($code, $discounts)) {
+        $key = array_search($code, $discounts);
+        unset($discounts[$key]);
             
         $data = wpinv_get_checkout_session();
         $data['cart_discounts'] = $discounts;
-        if ( !empty( $data['invoice_id'] ) && $payment_meta = wpinv_get_invoice_meta( $data['invoice_id'] ) ) {
-            $payment_meta['user_info']['discount']  = !empty( $discounts ) ? implode( ',', $discounts ) : '';
-            update_post_meta( $data['invoice_id'], '_wpinv_payment_meta', $payment_meta );
+        if (!empty($data['invoice_id']) && $payment_meta = wpinv_get_invoice_meta($data['invoice_id'])) {
+            $payment_meta['user_info']['discount'] = !empty($discounts) ? implode(',', $discounts) : '';
+            update_post_meta($data['invoice_id'], '_wpinv_payment_meta', $payment_meta);
         }
         
-        wpinv_set_checkout_session( $data );
+        wpinv_set_checkout_session($data);
     }
 
     return $discounts;
@@ -886,27 +886,27 @@ 
 function wpinv_unset_all_cart_discounts() {
     $data = wpinv_get_checkout_session();
     
-    if ( !empty( $data ) && isset( $data['cart_discounts'] ) ) {
-        unset( $data['cart_discounts'] );
+    if (!empty($data) && isset($data['cart_discounts'])) {
+        unset($data['cart_discounts']);
         
-         wpinv_set_checkout_session( $data );
+         wpinv_set_checkout_session($data);
          return true;
     }
     
     return false;
 }
 
-function wpinv_get_cart_discounts( $items = array() ) {
+function wpinv_get_cart_discounts($items = array()) {
     $session = wpinv_get_checkout_session();
     
-    $discounts = !empty( $session['cart_discounts'] ) ? $session['cart_discounts'] : false;
+    $discounts = !empty($session['cart_discounts']) ? $session['cart_discounts'] : false;
     return $discounts;
 }
 
-function wpinv_cart_has_discounts( $items = array() ) {
+function wpinv_cart_has_discounts($items = array()) {
     $ret = false;
 
-    if ( wpinv_get_cart_discounts( $items ) ) {
+    if (wpinv_get_cart_discounts($items)) {
         $ret = true;
     }
     
@@ -917,131 +917,131 @@ 
     }
     */
 
-    return apply_filters( 'wpinv_cart_has_discounts', $ret );
+    return apply_filters('wpinv_cart_has_discounts', $ret);
 }
 
-function wpinv_get_cart_discounted_amount( $items = array(), $discounts = false ) {
+function wpinv_get_cart_discounted_amount($items = array(), $discounts = false) {
     $amount = 0.00;
-    $items  = !empty( $items ) ? $items : wpinv_get_cart_content_details();
+    $items  = !empty($items) ? $items : wpinv_get_cart_content_details();
 
-    if ( $items ) {
-        $discounts = wp_list_pluck( $items, 'discount' );
+    if ($items) {
+        $discounts = wp_list_pluck($items, 'discount');
 
-        if ( is_array( $discounts ) ) {
-            $discounts = array_map( 'floatval', $discounts );
-            $amount    = array_sum( $discounts );
+        if (is_array($discounts)) {
+            $discounts = array_map('floatval', $discounts);
+            $amount    = array_sum($discounts);
         }
     }
 
-    return apply_filters( 'wpinv_get_cart_discounted_amount', $amount );
+    return apply_filters('wpinv_get_cart_discounted_amount', $amount);
 }
 
-function wpinv_get_cart_items_discount_amount( $items = array(), $discount = false ) {
-    $items  = !empty( $items ) ? $items : wpinv_get_cart_content_details();
+function wpinv_get_cart_items_discount_amount($items = array(), $discount = false) {
+    $items = !empty($items) ? $items : wpinv_get_cart_content_details();
     
-    if ( empty( $discount ) || empty( $items ) ) {
+    if (empty($discount) || empty($items)) {
         return 0;
     }
 
     $amount = 0;
     
-    foreach ( $items as $item ) {
-        $amount += wpinv_get_cart_item_discount_amount( $item, $discount );
+    foreach ($items as $item) {
+        $amount += wpinv_get_cart_item_discount_amount($item, $discount);
     }
     
-    $amount = wpinv_round_amount( $amount );
+    $amount = wpinv_round_amount($amount);
 
     return $amount;
 }
 
-function wpinv_get_cart_item_discount_amount( $item = array(), $discount = false ) {
+function wpinv_get_cart_item_discount_amount($item = array(), $discount = false) {
     global $wpinv_is_last_cart_item, $wpinv_flat_discount_total;
     
     $amount = 0;
 
-    if ( empty( $item ) || empty( $item['id'] ) ) {
+    if (empty($item) || empty($item['id'])) {
         return $amount;
     }
 
-    if ( empty( $item['quantity'] ) ) {
+    if (empty($item['quantity'])) {
         return $amount;
     }
 
-    if ( empty( $item['options'] ) ) {
+    if (empty($item['options'])) {
         $item['options'] = array();
     }
 
-    $price            = wpinv_get_cart_item_price( $item['id'], $item, $item['options'] );
+    $price            = wpinv_get_cart_item_price($item['id'], $item, $item['options']);
     $discounted_price = $price;
 
     $discounts = false === $discount ? wpinv_get_cart_discounts() : $discount;
-    if ( empty( $discounts ) ) {
+    if (empty($discounts)) {
         return $amount;
     }
 
-    if ( $discounts ) {
-        if ( is_array( $discounts ) ) {
-            $discounts = array_values( $discounts );
+    if ($discounts) {
+        if (is_array($discounts)) {
+            $discounts = array_values($discounts);
         } else {
-            $discounts = explode( ',', $discounts );
+            $discounts = explode(',', $discounts);
         }
     }
 
-    if( $discounts ) {
-        foreach ( $discounts as $discount ) {
-            $code_id = wpinv_get_discount_id_by_code( $discount );
+    if ($discounts) {
+        foreach ($discounts as $discount) {
+            $code_id = wpinv_get_discount_id_by_code($discount);
 
             // Check discount exists
-            if( ! $code_id ) {
+            if (!$code_id) {
                 continue;
             }
 
-            $reqs           = wpinv_get_discount_item_reqs( $code_id );
-            $excluded_items = wpinv_get_discount_excluded_items( $code_id );
+            $reqs           = wpinv_get_discount_item_reqs($code_id);
+            $excluded_items = wpinv_get_discount_excluded_items($code_id);
 
             // Make sure requirements are set and that this discount shouldn't apply to the whole cart
-            if ( !empty( $reqs ) && wpinv_is_discount_not_global( $code_id ) ) {
-                foreach ( $reqs as $item_id ) {
-                    if ( $item_id == $item['id'] && ! in_array( $item['id'], $excluded_items ) ) {
-                        $discounted_price -= $price - wpinv_get_discounted_amount( $discount, $price );
+            if (!empty($reqs) && wpinv_is_discount_not_global($code_id)) {
+                foreach ($reqs as $item_id) {
+                    if ($item_id == $item['id'] && !in_array($item['id'], $excluded_items)) {
+                        $discounted_price -= $price - wpinv_get_discounted_amount($discount, $price);
                     }
                 }
             } else {
                 // This is a global cart discount
-                if ( !in_array( $item['id'], $excluded_items ) ) {
-                    if ( 'flat' === wpinv_get_discount_type( $code_id ) ) {
+                if (!in_array($item['id'], $excluded_items)) {
+                    if ('flat' === wpinv_get_discount_type($code_id)) {
                         $items_subtotal    = 0.00;
                         $cart_items        = wpinv_get_cart_contents();
                         
-                        foreach ( $cart_items as $cart_item ) {
-                            if ( ! in_array( $cart_item['id'], $excluded_items ) ) {
-                                $options = !empty( $cart_item['options'] ) ? $cart_item['options'] : array();
-                                $item_price      = wpinv_get_cart_item_price( $cart_item['id'], $cart_item, $options );
+                        foreach ($cart_items as $cart_item) {
+                            if (!in_array($cart_item['id'], $excluded_items)) {
+                                $options = !empty($cart_item['options']) ? $cart_item['options'] : array();
+                                $item_price      = wpinv_get_cart_item_price($cart_item['id'], $cart_item, $options);
                                 $items_subtotal += $item_price * $cart_item['quantity'];
                             }
                         }
 
-                        $subtotal_percent  = ( ( $price * $item['quantity'] ) / $items_subtotal );
-                        $code_amount       = wpinv_get_discount_amount( $code_id );
+                        $subtotal_percent  = (($price * $item['quantity']) / $items_subtotal);
+                        $code_amount       = wpinv_get_discount_amount($code_id);
                         $discounted_amount = $code_amount * $subtotal_percent;
                         $discounted_price -= $discounted_amount;
 
-                        $wpinv_flat_discount_total += round( $discounted_amount, wpinv_currency_decimal_filter() );
+                        $wpinv_flat_discount_total += round($discounted_amount, wpinv_currency_decimal_filter());
 
-                        if ( $wpinv_is_last_cart_item && $wpinv_flat_discount_total < $code_amount ) {
+                        if ($wpinv_is_last_cart_item && $wpinv_flat_discount_total < $code_amount) {
                             $adjustment = $code_amount - $wpinv_flat_discount_total;
                             $discounted_price -= $adjustment;
                         }
                     } else {
-                        $discounted_price -= $price - wpinv_get_discounted_amount( $discount, $price );
+                        $discounted_price -= $price - wpinv_get_discounted_amount($discount, $price);
                     }
                 }
             }
         }
 
-        $amount = ( $price - apply_filters( 'wpinv_get_cart_item_discounted_amount', $discounted_price, $discounts, $item, $price ) );
+        $amount = ($price - apply_filters('wpinv_get_cart_item_discounted_amount', $discounted_price, $discounts, $item, $price));
 
-        if ( 'flat' !== wpinv_get_discount_type( $code_id ) ) {
+        if ('flat' !== wpinv_get_discount_type($code_id)) {
             $amount = $amount * $item['quantity'];
         }
     }
@@ -1049,59 +1049,59 @@ 
     return $amount;
 }
 
-function wpinv_cart_discounts_html( $items = array() ) {
-    echo wpinv_get_cart_discounts_html( $items );
+function wpinv_cart_discounts_html($items = array()) {
+    echo wpinv_get_cart_discounts_html($items);
 }
 
-function wpinv_get_cart_discounts_html( $items = array(), $discounts = false ) {
+function wpinv_get_cart_discounts_html($items = array(), $discounts = false) {
     global $wpi_cart_columns;
     
-    $items  = !empty( $items ) ? $items : wpinv_get_cart_content_details();
+    $items = !empty($items) ? $items : wpinv_get_cart_content_details();
     
-    if ( !$discounts ) {
-        $discounts = wpinv_get_cart_discounts( $items );
+    if (!$discounts) {
+        $discounts = wpinv_get_cart_discounts($items);
     }
 
-    if ( !$discounts ) {
+    if (!$discounts) {
         return;
     }
     
-    $discounts = is_array( $discounts ) ? $discounts : array( $discounts );
+    $discounts = is_array($discounts) ? $discounts : array($discounts);
     
     $html = '';
 
-    foreach ( $discounts as $discount ) {
-        $discount_id    = wpinv_get_discount_id_by_code( $discount );
-        $discount_value = wpinv_get_discount_amount( $discount_id );
-        $rate           = wpinv_format_discount_rate( wpinv_get_discount_type( $discount_id ), $discount_value );
-        $amount         = wpinv_get_cart_items_discount_amount( $items, $discount );
-        $remove_btn     = '<a title="' . esc_attr__( 'Remove discount', 'invoicing' ) . '" data-code="' . $discount . '" data-value="' . $discount_value . '" class="wpi-discount-remove" href="javascript:void(0);">[<i class="fa fa-times" aria-hidden="true"></i>]</a> ';
+    foreach ($discounts as $discount) {
+        $discount_id    = wpinv_get_discount_id_by_code($discount);
+        $discount_value = wpinv_get_discount_amount($discount_id);
+        $rate           = wpinv_format_discount_rate(wpinv_get_discount_type($discount_id), $discount_value);
+        $amount         = wpinv_get_cart_items_discount_amount($items, $discount);
+        $remove_btn     = '<a title="' . esc_attr__('Remove discount', 'invoicing') . '" data-code="' . $discount . '" data-value="' . $discount_value . '" class="wpi-discount-remove" href="javascript:void(0);">[<i class="fa fa-times" aria-hidden="true"></i>]</a> ';
         
         $html .= '<tr class="wpinv_cart_footer_row wpinv_cart_discount_row">';
         ob_start();
-        do_action( 'wpinv_checkout_table_discount_first', $items );
+        do_action('wpinv_checkout_table_discount_first', $items);
         $html .= ob_get_clean();
-        $html .= '<td class="wpinv_cart_discount_label text-right" colspan="' . $wpi_cart_columns . '">' . $remove_btn . '<strong>' . wpinv_cart_discount_label( $discount, $rate, false ) . '</strong></td><td class="wpinv_cart_discount text-right"><span data-discount="' . $amount . '" class="wpinv_cart_discount_amount">&ndash;' . wpinv_price( wpinv_format_amount( $amount ) ) . '</span></td>';
+        $html .= '<td class="wpinv_cart_discount_label text-right" colspan="' . $wpi_cart_columns . '">' . $remove_btn . '<strong>' . wpinv_cart_discount_label($discount, $rate, false) . '</strong></td><td class="wpinv_cart_discount text-right"><span data-discount="' . $amount . '" class="wpinv_cart_discount_amount">&ndash;' . wpinv_price(wpinv_format_amount($amount)) . '</span></td>';
         ob_start();
-        do_action( 'wpinv_checkout_table_discount_last', $items );
+        do_action('wpinv_checkout_table_discount_last', $items);
         $html .= ob_get_clean();
         $html .= '</tr>';
     }
 
-    return apply_filters( 'wpinv_get_cart_discounts_html', $html, $discounts, $rate );
+    return apply_filters('wpinv_get_cart_discounts_html', $html, $discounts, $rate);
 }
 
-function wpinv_display_cart_discount( $formatted = false, $echo = false ) {
+function wpinv_display_cart_discount($formatted = false, $echo = false) {
     $discounts = wpinv_get_cart_discounts();
 
-    if ( empty( $discounts ) ) {
+    if (empty($discounts)) {
         return false;
     }
 
-    $discount_id  = wpinv_get_discount_id_by_code( $discounts[0] );
-    $amount       = wpinv_format_discount_rate( wpinv_get_discount_type( $discount_id ), wpinv_get_discount_amount( $discount_id ) );
+    $discount_id  = wpinv_get_discount_id_by_code($discounts[0]);
+    $amount       = wpinv_format_discount_rate(wpinv_get_discount_type($discount_id), wpinv_get_discount_amount($discount_id));
 
-    if ( $echo ) {
+    if ($echo) {
         echo $amount;
     }
 
@@ -1109,135 +1109,135 @@ 
 }
 
 function wpinv_remove_cart_discount() {
-    if ( !isset( $_GET['discount_id'] ) || ! isset( $_GET['discount_code'] ) ) {
+    if (!isset($_GET['discount_id']) || !isset($_GET['discount_code'])) {
         return;
     }
 
-    do_action( 'wpinv_pre_remove_cart_discount', absint( $_GET['discount_id'] ) );
+    do_action('wpinv_pre_remove_cart_discount', absint($_GET['discount_id']));
 
-    wpinv_unset_cart_discount( urldecode( $_GET['discount_code'] ) );
+    wpinv_unset_cart_discount(urldecode($_GET['discount_code']));
 
-    do_action( 'wpinv_post_remove_cart_discount', absint( $_GET['discount_id'] ) );
+    do_action('wpinv_post_remove_cart_discount', absint($_GET['discount_id']));
 
-    wp_redirect( wpinv_get_checkout_uri() ); wpinv_die();
+    wp_redirect(wpinv_get_checkout_uri()); wpinv_die();
 }
-add_action( 'wpinv_remove_cart_discount', 'wpinv_remove_cart_discount' );
+add_action('wpinv_remove_cart_discount', 'wpinv_remove_cart_discount');
 
-function wpinv_maybe_remove_cart_discount( $cart_key = 0 ) {
+function wpinv_maybe_remove_cart_discount($cart_key = 0) {
     $discounts = wpinv_get_cart_discounts();
 
-    if ( !$discounts ) {
+    if (!$discounts) {
         return;
     }
 
-    foreach ( $discounts as $discount ) {
-        if ( !wpinv_is_discount_valid( $discount ) ) {
-            wpinv_unset_cart_discount( $discount );
+    foreach ($discounts as $discount) {
+        if (!wpinv_is_discount_valid($discount)) {
+            wpinv_unset_cart_discount($discount);
         }
     }
 }
-add_action( 'wpinv_post_remove_from_cart', 'wpinv_maybe_remove_cart_discount' );
+add_action('wpinv_post_remove_from_cart', 'wpinv_maybe_remove_cart_discount');
 
 function wpinv_multiple_discounts_allowed() {
-    $ret = wpinv_get_option( 'allow_multiple_discounts', false );
-    return (bool) apply_filters( 'wpinv_multiple_discounts_allowed', $ret );
+    $ret = wpinv_get_option('allow_multiple_discounts', false);
+    return (bool)apply_filters('wpinv_multiple_discounts_allowed', $ret);
 }
 
 function wpinv_listen_for_cart_discount() {
     global $wpi_session;
     
-    if ( empty( $_REQUEST['discount'] ) || is_array( $_REQUEST['discount'] ) ) {
+    if (empty($_REQUEST['discount']) || is_array($_REQUEST['discount'])) {
         return;
     }
 
-    $code = preg_replace('/[^a-zA-Z0-9-_]+/', '', $_REQUEST['discount'] );
+    $code = preg_replace('/[^a-zA-Z0-9-_]+/', '', $_REQUEST['discount']);
 
-    $wpi_session->set( 'preset_discount', $code );
+    $wpi_session->set('preset_discount', $code);
 }
 //add_action( 'init', 'wpinv_listen_for_cart_discount', 0 );
 
 function wpinv_apply_preset_discount() {
     global $wpi_session;
     
-    $code = $wpi_session->get( 'preset_discount' );
+    $code = $wpi_session->get('preset_discount');
 
-    if ( !$code ) {
+    if (!$code) {
         return;
     }
 
-    if ( !wpinv_is_discount_valid( $code, '', false ) ) {
+    if (!wpinv_is_discount_valid($code, '', false)) {
         return;
     }
     
-    $code = apply_filters( 'wpinv_apply_preset_discount', $code );
+    $code = apply_filters('wpinv_apply_preset_discount', $code);
 
-    wpinv_set_cart_discount( $code );
+    wpinv_set_cart_discount($code);
 
-    $wpi_session->set( 'preset_discount', null );
+    $wpi_session->set('preset_discount', null);
 }
 //add_action( 'init', 'wpinv_apply_preset_discount', 999 );
 
-function wpinv_get_discount_label( $code, $echo = true ) {
-    $label = wp_sprintf( __( 'Discount%1$s', 'invoicing' ), ( $code != '' && $code != 'none' ? ' (<code>' . $code . '</code>)': '' ) );
-    $label = apply_filters( 'wpinv_get_discount_label', $label, $code );
+function wpinv_get_discount_label($code, $echo = true) {
+    $label = wp_sprintf(__('Discount%1$s', 'invoicing'), ($code != '' && $code != 'none' ? ' (<code>' . $code . '</code>)' : ''));
+    $label = apply_filters('wpinv_get_discount_label', $label, $code);
 
-    if ( $echo ) {
+    if ($echo) {
         echo $label;
     } else {
         return $label;
     }
 }
 
-function wpinv_cart_discount_label( $code, $rate, $echo = true ) {
-    $label = wp_sprintf( __( '%1$s Discount: %2$s', 'invoicing' ), $rate, $code );
-    $label = apply_filters( 'wpinv_cart_discount_label', $label, $code, $rate );
+function wpinv_cart_discount_label($code, $rate, $echo = true) {
+    $label = wp_sprintf(__('%1$s Discount: %2$s', 'invoicing'), $rate, $code);
+    $label = apply_filters('wpinv_cart_discount_label', $label, $code, $rate);
 
-    if ( $echo ) {
+    if ($echo) {
         echo $label;
     } else {
         return $label;
     }
 }
 
-function wpinv_check_delete_discount( $check, $post, $force_delete ) {
-    if ( $post->post_type == 'wpi_discount' && wpinv_get_discount_uses( $post->ID ) > 0 ) {
+function wpinv_check_delete_discount($check, $post, $force_delete) {
+    if ($post->post_type == 'wpi_discount' && wpinv_get_discount_uses($post->ID) > 0) {
         return true;
     }
     
     return $check;
 }
-add_filter( 'pre_delete_post', 'wpinv_check_delete_discount', 10, 3 );
+add_filter('pre_delete_post', 'wpinv_check_delete_discount', 10, 3);
 
 function wpinv_checkout_form_validate_discounts() {
     global $wpi_checkout_id;
     
     $discounts = wpinv_get_cart_discounts();
     
-    if ( !empty( $discounts ) ) {
+    if (!empty($discounts)) {
         $invalid = false;
         
-        foreach ( $discounts as $key => $code ) {
-            if ( !wpinv_is_discount_valid( $code, (int)wpinv_get_user_id( $wpi_checkout_id ) ) ) {
+        foreach ($discounts as $key => $code) {
+            if (!wpinv_is_discount_valid($code, (int)wpinv_get_user_id($wpi_checkout_id))) {
                 $invalid = true;
                 
-                wpinv_unset_cart_discount( $code );
+                wpinv_unset_cart_discount($code);
             }
         }
         
-        if ( $invalid ) {
+        if ($invalid) {
             $errors = wpinv_get_errors();
-            $error  = !empty( $errors['wpinv-discount-error'] ) ? $errors['wpinv-discount-error'] . ' ' : '';
-            $error  .= __( 'The discount has been removed from cart.', 'invoicing' );
-            wpinv_set_error( 'wpinv-discount-error', $error );
+            $error  = !empty($errors['wpinv-discount-error']) ? $errors['wpinv-discount-error'] . ' ' : '';
+            $error .= __('The discount has been removed from cart.', 'invoicing');
+            wpinv_set_error('wpinv-discount-error', $error);
             
-            wpinv_recalculate_tax( true );
+            wpinv_recalculate_tax(true);
         }
     }
 }
-add_action( 'wpinv_before_checkout_form', 'wpinv_checkout_form_validate_discounts', -10 );
+add_action('wpinv_before_checkout_form', 'wpinv_checkout_form_validate_discounts', -10);
 
 function wpinv_discount_amount() {
     $output = 0.00;
     
-    return apply_filters( 'wpinv_discount_amount', $output );
+    return apply_filters('wpinv_discount_amount', $output);
 }
\ No newline at end of file

includes/wpinv-gateway-functions.php

Spacing +255 added lines, -255 removed lines

@@ -7,206 +7,206 @@ 
  */
  
 // MUST have WordPress.
-if ( !defined( 'WPINC' ) ) {
-    exit( 'Do NOT access this file directly: ' . basename( __FILE__ ) );
+if (!defined('WPINC')) {
+    exit('Do NOT access this file directly: ' . basename(__FILE__));
 }
 
 function wpinv_get_payment_gateways() {
     // Default, built-in gateways
     $gateways = array(
         'paypal' => array(
-            'admin_label'    => __( 'PayPal Standard', 'invoicing' ),
-            'checkout_label' => __( 'PayPal Standard', 'invoicing' ),
+            'admin_label'    => __('PayPal Standard', 'invoicing'),
+            'checkout_label' => __('PayPal Standard', 'invoicing'),
             'ordering'       => 1,
         ),
         'authorizenet' => array(
-            'admin_label'    => __( 'Authorize.Net (AIM)', 'invoicing' ),
-            'checkout_label' => __( 'Authorize.Net - Credit Card / Debit Card', 'invoicing' ),
+            'admin_label'    => __('Authorize.Net (AIM)', 'invoicing'),
+            'checkout_label' => __('Authorize.Net - Credit Card / Debit Card', 'invoicing'),
             'ordering'       => 4,
         ),
         'worldpay' => array(
-            'admin_label'    => __( 'Worldpay', 'invoicing' ),
-            'checkout_label' => __( 'Worldpay - Credit Card / Debit Card', 'invoicing' ),
+            'admin_label'    => __('Worldpay', 'invoicing'),
+            'checkout_label' => __('Worldpay - Credit Card / Debit Card', 'invoicing'),
             'ordering'       => 5,
         ),
         'bank_transfer' => array(
-            'admin_label'    => __( 'Pre Bank Transfer', 'invoicing' ),
-            'checkout_label' => __( 'Pre Bank Transfer', 'invoicing' ),
+            'admin_label'    => __('Pre Bank Transfer', 'invoicing'),
+            'checkout_label' => __('Pre Bank Transfer', 'invoicing'),
             'ordering'       => 11,
         ),
         'manual' => array(
-            'admin_label'    => __( 'Test Payment', 'invoicing' ),
-            'checkout_label' => __( 'Test Payment', 'invoicing' ),
+            'admin_label'    => __('Test Payment', 'invoicing'),
+            'checkout_label' => __('Test Payment', 'invoicing'),
             'ordering'       => 12,
         ),
     );
 
-    return apply_filters( 'wpinv_payment_gateways', $gateways );
+    return apply_filters('wpinv_payment_gateways', $gateways);
 }
 
-function wpinv_payment_gateway_titles( $all_gateways ) {
+function wpinv_payment_gateway_titles($all_gateways) {
     global $wpinv_options;
     
     $gateways = array();
-    foreach ( $all_gateways as $key => $gateway ) {
-        if ( !empty( $wpinv_options[$key . '_title'] ) ) {
-            $all_gateways[$key]['checkout_label'] = __( $wpinv_options[$key . '_title'], 'invoicing' );
+    foreach ($all_gateways as $key => $gateway) {
+        if (!empty($wpinv_options[$key . '_title'])) {
+            $all_gateways[$key]['checkout_label'] = __($wpinv_options[$key . '_title'], 'invoicing');
         }
         
-        $gateways[$key] = isset( $wpinv_options[$key . '_ordering'] ) ? $wpinv_options[$key . '_ordering'] : ( isset( $gateway['ordering'] ) ? $gateway['ordering'] : '' );
+        $gateways[$key] = isset($wpinv_options[$key . '_ordering']) ? $wpinv_options[$key . '_ordering'] : (isset($gateway['ordering']) ? $gateway['ordering'] : '');
     }
 
-    asort( $gateways );
+    asort($gateways);
     
-    foreach ( $gateways as $gateway => $key ) {
+    foreach ($gateways as $gateway => $key) {
         $gateways[$gateway] = $all_gateways[$gateway];
     }
     
     return $gateways;
 }
-add_filter( 'wpinv_payment_gateways', 'wpinv_payment_gateway_titles', 1000, 1 );
+add_filter('wpinv_payment_gateways', 'wpinv_payment_gateway_titles', 1000, 1);
 
-function wpinv_get_enabled_payment_gateways( $sort = false ) {
+function wpinv_get_enabled_payment_gateways($sort = false) {
     $gateways = wpinv_get_payment_gateways();
-    $enabled  = wpinv_get_option( 'gateways', false );
+    $enabled  = wpinv_get_option('gateways', false);
 
     $gateway_list = array();
 
-    foreach ( $gateways as $key => $gateway ) {
-        if ( isset( $enabled[ $key ] ) && $enabled[ $key ] == 1 ) {
-            $gateway_list[ $key ] = $gateway;
+    foreach ($gateways as $key => $gateway) {
+        if (isset($enabled[$key]) && $enabled[$key] == 1) {
+            $gateway_list[$key] = $gateway;
         }
     }
 
-    if ( true === $sort ) {
-        uasort( $gateway_list, 'wpinv_sort_gateway_order' );
+    if (true === $sort) {
+        uasort($gateway_list, 'wpinv_sort_gateway_order');
         
         // Reorder our gateways so the default is first
         $default_gateway_id = wpinv_get_default_gateway();
 
-        if ( wpinv_is_gateway_active( $default_gateway_id ) ) {
-            $default_gateway    = array( $default_gateway_id => $gateway_list[ $default_gateway_id ] );
-            unset( $gateway_list[ $default_gateway_id ] );
+        if (wpinv_is_gateway_active($default_gateway_id)) {
+            $default_gateway = array($default_gateway_id => $gateway_list[$default_gateway_id]);
+            unset($gateway_list[$default_gateway_id]);
 
-            $gateway_list = array_merge( $default_gateway, $gateway_list );
+            $gateway_list = array_merge($default_gateway, $gateway_list);
         }
     }
 
-    return apply_filters( 'wpinv_enabled_payment_gateways', $gateway_list );
+    return apply_filters('wpinv_enabled_payment_gateways', $gateway_list);
 }
 
-function wpinv_sort_gateway_order( $a, $b ) {
+function wpinv_sort_gateway_order($a, $b) {
     return $a['ordering'] - $b['ordering'];
 }
 
-function wpinv_is_gateway_active( $gateway ) {
+function wpinv_is_gateway_active($gateway) {
     $gateways = wpinv_get_enabled_payment_gateways();
 
-    $ret = is_array($gateways) && $gateway ?  array_key_exists( $gateway, $gateways ) : false;
+    $ret = is_array($gateways) && $gateway ?  array_key_exists($gateway, $gateways) : false;
 
-    return apply_filters( 'wpinv_is_gateway_active', $ret, $gateway, $gateways );
+    return apply_filters('wpinv_is_gateway_active', $ret, $gateway, $gateways);
 }
 
 function wpinv_get_default_gateway() {
-    $default = wpinv_get_option( 'default_gateway', 'paypal' );
+    $default = wpinv_get_option('default_gateway', 'paypal');
 
-    if ( !wpinv_is_gateway_active( $default ) ) {
+    if (!wpinv_is_gateway_active($default)) {
         $gateways = wpinv_get_enabled_payment_gateways();
-        $gateways = array_keys( $gateways );
-        $default  = reset( $gateways );
+        $gateways = array_keys($gateways);
+        $default  = reset($gateways);
     }
 
-    return apply_filters( 'wpinv_default_gateway', $default );
+    return apply_filters('wpinv_default_gateway', $default);
 }
 
-function wpinv_get_gateway_admin_label( $gateway ) {
+function wpinv_get_gateway_admin_label($gateway) {
     $gateways = wpinv_get_payment_gateways();
-    $label    = isset( $gateways[ $gateway ] ) ? $gateways[ $gateway ]['admin_label'] : $gateway;
-    $payment  = isset( $_GET['id'] ) ? absint( $_GET['id'] ) : false;
+    $label    = isset($gateways[$gateway]) ? $gateways[$gateway]['admin_label'] : $gateway;
+    $payment  = isset($_GET['id']) ? absint($_GET['id']) : false;
 
-    if( $gateway == 'manual' && $payment ) {
-        if( !( (float)wpinv_payment_total( $payment ) > 0 ) ) {
-            $label = __( 'Free Purchase', 'invoicing' );
+    if ($gateway == 'manual' && $payment) {
+        if (!((float)wpinv_payment_total($payment) > 0)) {
+            $label = __('Free Purchase', 'invoicing');
         }
     }
 
-    return apply_filters( 'wpinv_gateway_admin_label', $label, $gateway );
+    return apply_filters('wpinv_gateway_admin_label', $label, $gateway);
 }
 
-function wpinv_get_gateway_description( $gateway ) {
+function wpinv_get_gateway_description($gateway) {
     global $wpinv_options;
 
-    $description = isset( $wpinv_options[$gateway . '_desc'] ) ? $wpinv_options[$gateway . '_desc'] : '';
+    $description = isset($wpinv_options[$gateway . '_desc']) ? $wpinv_options[$gateway . '_desc'] : '';
 
-    return apply_filters( 'wpinv_gateway_description', $description, $gateway );
+    return apply_filters('wpinv_gateway_description', $description, $gateway);
 }
 
-function wpinv_get_gateway_button_label( $gateway ) {
-    return apply_filters( 'wpinv_gateway_' . $gateway . '_button_label', '' );
+function wpinv_get_gateway_button_label($gateway) {
+    return apply_filters('wpinv_gateway_' . $gateway . '_button_label', '');
 }
 
-function wpinv_get_gateway_checkout_label( $gateway ) {
+function wpinv_get_gateway_checkout_label($gateway) {
     $gateways = wpinv_get_payment_gateways();
-    $label    = isset( $gateways[ $gateway ] ) ? $gateways[ $gateway ]['checkout_label'] : $gateway;
+    $label    = isset($gateways[$gateway]) ? $gateways[$gateway]['checkout_label'] : $gateway;
 
-    if( $gateway == 'manual' ) {
-        $label = __( 'Manual Payment', 'invoicing' );
+    if ($gateway == 'manual') {
+        $label = __('Manual Payment', 'invoicing');
     }
 
-    return apply_filters( 'wpinv_gateway_checkout_label', $label, $gateway );
+    return apply_filters('wpinv_gateway_checkout_label', $label, $gateway);
 }
 
-function wpinv_settings_sections_gateways( $settings ) {
+function wpinv_settings_sections_gateways($settings) {
     $gateways = wpinv_get_payment_gateways();
     
     if (!empty($gateways)) {
-        foreach  ($gateways as $key => $gateway) {
+        foreach ($gateways as $key => $gateway) {
             $settings[$key] = $gateway['admin_label'];
         }
     }
     
     return $settings;    
 }
-add_filter( 'wpinv_settings_sections_gateways', 'wpinv_settings_sections_gateways', 10, 1 );
+add_filter('wpinv_settings_sections_gateways', 'wpinv_settings_sections_gateways', 10, 1);
 
-function wpinv_settings_gateways( $settings ) {
+function wpinv_settings_gateways($settings) {
     $gateways = wpinv_get_payment_gateways();
     
     if (!empty($gateways)) {
-        foreach  ($gateways as $key => $gateway) {
+        foreach ($gateways as $key => $gateway) {
             $setting = array();
             $setting[$key . '_header'] = array(
                     'id'   => 'gateway_header',
-                    'name' => '<h3>' . wp_sprintf( __( '%s Settings', 'invoicing' ), $gateway['admin_label'] ) . '</h3>',
+                    'name' => '<h3>' . wp_sprintf(__('%s Settings', 'invoicing'), $gateway['admin_label']) . '</h3>',
                     'custom' => $key,
                     'type' => 'gateway_header',
                 );
             $setting[$key . '_active'] = array(
                     'id'   => $key . '_active',
-                    'name' => __( 'Active', 'invoicing' ),
-                    'desc' => wp_sprintf( __( 'Enable %s', 'invoicing' ), $gateway['admin_label'] ),
+                    'name' => __('Active', 'invoicing'),
+                    'desc' => wp_sprintf(__('Enable %s', 'invoicing'), $gateway['admin_label']),
                     'type' => 'checkbox',
                 );
                 
             $setting[$key . '_title'] = array(
                     'id'   => $key . '_title',
-                    'name' => __( 'Title', 'invoicing' ),
-                    'desc' => __( 'This controls the title which the user sees during checkout.', 'invoicing' ),
+                    'name' => __('Title', 'invoicing'),
+                    'desc' => __('This controls the title which the user sees during checkout.', 'invoicing'),
                     'type' => 'text',
                     'std' => isset($gateway['checkout_label']) ? $gateway['checkout_label'] : ''
                 );
             
             $setting[$key . '_desc'] = array(
                     'id'   => $key . '_desc',
-                    'name' => __( 'Description', 'invoicing' ),
-                    'desc' => __( 'This controls the description which the user sees during checkout.', 'invoicing' ),
+                    'name' => __('Description', 'invoicing'),
+                    'desc' => __('This controls the description which the user sees during checkout.', 'invoicing'),
                     'type' => 'text',
                     'size' => 'large'
                 );
                 
             $setting[$key . '_ordering'] = array(
                     'id'   => $key . '_ordering',
-                    'name' => __( 'Display Order', 'invoicing' ),
+                    'name' => __('Display Order', 'invoicing'),
                     'type' => 'number',
                     'size' => 'small',
                     'std'  => isset($gateway['ordering']) ? $gateway['ordering'] : '10',
@@ -215,8 +215,8 @@ 
                     'step' => '1'
                 );
                 
-            $setting = apply_filters( 'wpinv_gateway_settings', $setting, $key );
-            $setting = apply_filters( 'wpinv_gateway_settings_' . $key, $setting );
+            $setting = apply_filters('wpinv_gateway_settings', $setting, $key);
+            $setting = apply_filters('wpinv_gateway_settings_' . $key, $setting);
             
             $settings[$key] = $setting;
         }
@@ -224,106 +224,106 @@ 
     
     return $settings;    
 }
-add_filter( 'wpinv_settings_gateways', 'wpinv_settings_gateways', 10, 1 );
+add_filter('wpinv_settings_gateways', 'wpinv_settings_gateways', 10, 1);
 
-function wpinv_gateway_header_callback( $args ) {
-    echo '<input type="hidden" id="wpinv_settings[save_gateway]" name="wpinv_settings[save_gateway]" value="' . esc_attr( $args['custom'] ) . '" />';
+function wpinv_gateway_header_callback($args) {
+    echo '<input type="hidden" id="wpinv_settings[save_gateway]" name="wpinv_settings[save_gateway]" value="' . esc_attr($args['custom']) . '" />';
 }
 
-function wpinv_get_gateway_supports( $gateway ) {
+function wpinv_get_gateway_supports($gateway) {
     $gateways = wpinv_get_enabled_payment_gateways();
-    $supports = isset( $gateways[ $gateway ]['supports'] ) ? $gateways[ $gateway ]['supports'] : array();
-    return apply_filters( 'wpinv_gateway_supports', $supports, $gateway );
+    $supports = isset($gateways[$gateway]['supports']) ? $gateways[$gateway]['supports'] : array();
+    return apply_filters('wpinv_gateway_supports', $supports, $gateway);
 }
 
-function wpinv_gateway_supports_buy_now( $gateway ) {
-    $supports = wpinv_get_gateway_supports( $gateway );
-    $ret = in_array( 'buy_now', $supports );
-    return apply_filters( 'wpinv_gateway_supports_buy_now', $ret, $gateway );
+function wpinv_gateway_supports_buy_now($gateway) {
+    $supports = wpinv_get_gateway_supports($gateway);
+    $ret = in_array('buy_now', $supports);
+    return apply_filters('wpinv_gateway_supports_buy_now', $ret, $gateway);
 }
 
 function wpinv_shop_supports_buy_now() {
     $gateways = wpinv_get_enabled_payment_gateways();
     $ret      = false;
 
-    if ( !wpinv_use_taxes()  && $gateways ) {
-        foreach ( $gateways as $gateway_id => $gateway ) {
-            if ( wpinv_gateway_supports_buy_now( $gateway_id ) ) {
+    if (!wpinv_use_taxes() && $gateways) {
+        foreach ($gateways as $gateway_id => $gateway) {
+            if (wpinv_gateway_supports_buy_now($gateway_id)) {
                 $ret = true;
                 break;
             }
         }
     }
 
-    return apply_filters( 'wpinv_shop_supports_buy_now', $ret );
+    return apply_filters('wpinv_shop_supports_buy_now', $ret);
 }
 
-function wpinv_send_to_gateway( $gateway, $payment_data ) {
-    $payment_data['gateway_nonce'] = wp_create_nonce( 'wpi-gateway' );
+function wpinv_send_to_gateway($gateway, $payment_data) {
+    $payment_data['gateway_nonce'] = wp_create_nonce('wpi-gateway');
 
     // $gateway must match the ID used when registering the gateway
-    do_action( 'wpinv_gateway_' . $gateway, $payment_data );
+    do_action('wpinv_gateway_' . $gateway, $payment_data);
 }
 
 function wpinv_show_gateways() {
     $gateways = wpinv_get_enabled_payment_gateways();
     $show_gateways = false;
 
-    $chosen_gateway = isset( $_GET['payment-mode'] ) ? preg_replace('/[^a-zA-Z0-9-_]+/', '', $_GET['payment-mode'] ) : false;
+    $chosen_gateway = isset($_GET['payment-mode']) ? preg_replace('/[^a-zA-Z0-9-_]+/', '', $_GET['payment-mode']) : false;
 
-    if ( count( $gateways ) > 1 && empty( $chosen_gateway ) ) {
+    if (count($gateways) > 1 && empty($chosen_gateway)) {
         $show_gateways = true;
-        if ( wpinv_get_cart_total() <= 0 ) {
+        if (wpinv_get_cart_total() <= 0) {
             $show_gateways = false;
         }
     }
     
-    if ( !$show_gateways && wpinv_cart_has_recurring_item() ) {
+    if (!$show_gateways && wpinv_cart_has_recurring_item()) {
         $show_gateways = true;
     }
 
-    return apply_filters( 'wpinv_show_gateways', $show_gateways );
+    return apply_filters('wpinv_show_gateways', $show_gateways);
 }
 
-function wpinv_get_chosen_gateway( $invoice_id = 0 ) {
-	$gateways = array_keys( wpinv_get_enabled_payment_gateways() );
+function wpinv_get_chosen_gateway($invoice_id = 0) {
+	$gateways = array_keys(wpinv_get_enabled_payment_gateways());
 
     $chosen = false;
-    if ( $invoice_id > 0 && $invoice = wpinv_get_invoice( $invoice_id ) ) {
+    if ($invoice_id > 0 && $invoice = wpinv_get_invoice($invoice_id)) {
         $chosen = $invoice->get_gateway();
     }
 
-	$chosen   = isset( $_REQUEST['payment-mode'] ) ? sanitize_text_field( $_REQUEST['payment-mode'] ) : $chosen;
+	$chosen = isset($_REQUEST['payment-mode']) ? sanitize_text_field($_REQUEST['payment-mode']) : $chosen;
 
-	if ( false !== $chosen ) {
-		$chosen = preg_replace('/[^a-zA-Z0-9-_]+/', '', $chosen );
+	if (false !== $chosen) {
+		$chosen = preg_replace('/[^a-zA-Z0-9-_]+/', '', $chosen);
 	}
 
-	if ( ! empty ( $chosen ) ) {
-		$enabled_gateway = urldecode( $chosen );
-	} else if (  !empty( $invoice ) && (float)$invoice->get_subtotal() <= 0 ) {
+	if (!empty ($chosen)) {
+		$enabled_gateway = urldecode($chosen);
+	} else if (!empty($invoice) && (float)$invoice->get_subtotal() <= 0) {
 		$enabled_gateway = 'manual';
 	} else {
 		$enabled_gateway = wpinv_get_default_gateway();
 	}
     
-    if ( !wpinv_is_gateway_active( $enabled_gateway ) && !empty( $gateways ) ) {
-        if(wpinv_is_gateway_active( wpinv_get_default_gateway()) ){
+    if (!wpinv_is_gateway_active($enabled_gateway) && !empty($gateways)) {
+        if (wpinv_is_gateway_active(wpinv_get_default_gateway())) {
             $enabled_gateway = wpinv_get_default_gateway();
-        }else{
+        } else {
             $enabled_gateway = $gateways[0];
         }
 
     }
 
-	return apply_filters( 'wpinv_chosen_gateway', $enabled_gateway );
+	return apply_filters('wpinv_chosen_gateway', $enabled_gateway);
 }
 
-function wpinv_record_gateway_error( $title = '', $message = '', $parent = 0 ) {
-    return wpinv_error_log( $message, $title );
+function wpinv_record_gateway_error($title = '', $message = '', $parent = 0) {
+    return wpinv_error_log($message, $title);
 }
 
-function wpinv_count_sales_by_gateway( $gateway_id = 'paypal', $status = 'publish' ) {
+function wpinv_count_sales_by_gateway($gateway_id = 'paypal', $status = 'publish') {
 	$ret  = 0;
 	$args = array(
 		'meta_key'    => '_wpinv_gateway',
@@ -334,48 +334,48 @@ 
 		'fields'      => 'ids'
 	);
 
-	$payments = new WP_Query( $args );
+	$payments = new WP_Query($args);
 
-	if( $payments )
+	if ($payments)
 		$ret = $payments->post_count;
 	return $ret;
 }
 
-function wpinv_settings_update_gateways( $input ) {
+function wpinv_settings_update_gateways($input) {
     global $wpinv_options;
     
-    if ( !empty( $input['save_gateway'] ) ) {
-        $gateways = wpinv_get_option( 'gateways', false );
+    if (!empty($input['save_gateway'])) {
+        $gateways = wpinv_get_option('gateways', false);
         $gateways = !empty($gateways) ? $gateways : array();
         $gateway = $input['save_gateway'];
         
-        if ( !empty( $input[$gateway . '_active'] ) ) {
+        if (!empty($input[$gateway . '_active'])) {
             $gateways[$gateway] = 1;
         } else {
-            if ( isset( $gateways[$gateway] ) ) {
-                unset( $gateways[$gateway] );
+            if (isset($gateways[$gateway])) {
+                unset($gateways[$gateway]);
             }
         }
         
         $input['gateways'] = $gateways;
     }
     
-    if ( !empty( $input['default_gateway'] ) ) {
+    if (!empty($input['default_gateway'])) {
         $gateways = wpinv_get_payment_gateways();
         
-        foreach ( $gateways as $key => $gateway ) {
-            $active   = 0;
-            if ( !empty( $input['gateways'] ) && !empty( $input['gateways'][$key] ) ) {
+        foreach ($gateways as $key => $gateway) {
+            $active = 0;
+            if (!empty($input['gateways']) && !empty($input['gateways'][$key])) {
                 $active = 1;
             }
             
             $input[$key . '_active'] = $active;
             
-            if ( empty( $wpinv_options[$key . '_title'] ) ) {
+            if (empty($wpinv_options[$key . '_title'])) {
                 $input[$key . '_title'] = $gateway['checkout_label'];
             }
             
-            if ( !isset( $wpinv_options[$key . '_ordering'] ) && isset( $gateway['ordering'] ) ) {
+            if (!isset($wpinv_options[$key . '_ordering']) && isset($gateway['ordering'])) {
                 $input[$key . '_ordering'] = $gateway['ordering'];
             }
         }
@@ -383,26 +383,26 @@ 
     
     return $input;
 }
-add_filter( 'wpinv_settings_tab_gateways_sanitize', 'wpinv_settings_update_gateways', 10, 1 );
+add_filter('wpinv_settings_tab_gateways_sanitize', 'wpinv_settings_update_gateways', 10, 1);
 
 // PayPal Standard settings
-function wpinv_gateway_settings_paypal( $setting ) {    
-    $setting['paypal_desc']['std'] = __( 'Pay via PayPal: you can pay with your credit card if you don\'t have a PayPal account.', 'invoicing' );
+function wpinv_gateway_settings_paypal($setting) {    
+    $setting['paypal_desc']['std'] = __('Pay via PayPal: you can pay with your credit card if you don\'t have a PayPal account.', 'invoicing');
     
     $setting['paypal_sandbox'] = array(
             'type' => 'checkbox',
             'id'   => 'paypal_sandbox',
-            'name' => __( 'PayPal Sandbox', 'invoicing' ),
-            'desc' => __( 'PayPal sandbox can be used to test payments.', 'invoicing' ),
+            'name' => __('PayPal Sandbox', 'invoicing'),
+            'desc' => __('PayPal sandbox can be used to test payments.', 'invoicing'),
             'std'  => 1
         );
         
     $setting['paypal_email'] = array(
             'type' => 'text',
             'id'   => 'paypal_email',
-            'name' => __( 'PayPal Email', 'invoicing' ),
-            'desc' => __( 'Please enter your PayPal account\'s email address. Ex: myaccount@paypal.com', 'invoicing' ),
-            'std' => __( 'myaccount@paypal.com', 'invoicing' ),
+            'name' => __('PayPal Email', 'invoicing'),
+            'desc' => __('Please enter your PayPal account\'s email address. Ex: myaccount@paypal.com', 'invoicing'),
+            'std' => __('myaccount@paypal.com', 'invoicing'),
         );
     /*
     $setting['paypal_ipn_url'] = array(
@@ -416,123 +416,123 @@ 
         
     return $setting;
 }
-add_filter( 'wpinv_gateway_settings_paypal', 'wpinv_gateway_settings_paypal', 10, 1 );
+add_filter('wpinv_gateway_settings_paypal', 'wpinv_gateway_settings_paypal', 10, 1);
 
 // Pre Bank Transfer settings
-function wpinv_gateway_settings_bank_transfer( $setting ) {
-    $setting['bank_transfer_desc']['std'] = __( 'Make your payment directly into our bank account. Please use your Invoice ID as the payment reference. Your invoice won\'t be processed until the funds have cleared in our account.', 'invoicing' );
+function wpinv_gateway_settings_bank_transfer($setting) {
+    $setting['bank_transfer_desc']['std'] = __('Make your payment directly into our bank account. Please use your Invoice ID as the payment reference. Your invoice won\'t be processed until the funds have cleared in our account.', 'invoicing');
     
     $setting['bank_transfer_ac_name'] = array(
             'type' => 'text',
             'id' => 'bank_transfer_ac_name',
-            'name' => __( 'Account Name', 'invoicing' ),
-            'desc' => __( 'Enter the bank account name to which you want to transfer payment.', 'invoicing' ),
-            'std'  =>  __( 'Mr. John Martin', 'invoicing' ),
+            'name' => __('Account Name', 'invoicing'),
+            'desc' => __('Enter the bank account name to which you want to transfer payment.', 'invoicing'),
+            'std'  =>  __('Mr. John Martin', 'invoicing'),
         );
     
     $setting['bank_transfer_ac_no'] = array(
             'type' => 'text',
             'id' => 'bank_transfer_ac_no',
-            'name' => __( 'Account Number', 'invoicing' ),
-            'desc' => __( 'Enter your bank account number.', 'invoicing' ),
-            'std'  =>  __( 'TEST1234567890', 'invoicing' ),
+            'name' => __('Account Number', 'invoicing'),
+            'desc' => __('Enter your bank account number.', 'invoicing'),
+            'std'  =>  __('TEST1234567890', 'invoicing'),
         );
     
     $setting['bank_transfer_bank_name'] = array(
             'type' => 'text',
             'id'   => 'bank_transfer_bank_name',
-            'name' => __( 'Bank Name', 'invoicing' ),
-            'desc' => __( 'Enter the bank name to which you want to transfer payment.', 'invoicing' ),
-            'std' => __( 'ICICI Bank', 'invoicing' ),
+            'name' => __('Bank Name', 'invoicing'),
+            'desc' => __('Enter the bank name to which you want to transfer payment.', 'invoicing'),
+            'std' => __('ICICI Bank', 'invoicing'),
         );
     
     $setting['bank_transfer_ifsc'] = array(
             'type' => 'text',
             'id'   => 'bank_transfer_ifsc',
-            'name' => __( 'IFSC Code', 'invoicing' ),
-            'desc' => __( 'Enter your bank IFSC code.', 'invoicing' ),
-            'std'  =>  __( 'ICIC0001234', 'invoicing' ),
+            'name' => __('IFSC Code', 'invoicing'),
+            'desc' => __('Enter your bank IFSC code.', 'invoicing'),
+            'std'  =>  __('ICIC0001234', 'invoicing'),
         );
         
     $setting['bank_transfer_iban'] = array(
             'type' => 'text',
             'id'   => 'bank_transfer_iban',
-            'name' => __( 'IBAN', 'invoicing' ),
-            'desc' => __( 'Enter your International Bank Account Number(IBAN).', 'invoicing' ),
-            'std'  =>  __( 'GB29NWBK60161331926819', 'invoicing' ),
+            'name' => __('IBAN', 'invoicing'),
+            'desc' => __('Enter your International Bank Account Number(IBAN).', 'invoicing'),
+            'std'  =>  __('GB29NWBK60161331926819', 'invoicing'),
         );
         
     $setting['bank_transfer_bic'] = array(
             'type' => 'text',
             'id'   => 'bank_transfer_bic',
-            'name' => __( 'BIC/Swift Code', 'invoicing' ),
-            'std'  =>  __( 'ICICGB2L129', 'invoicing' ),
+            'name' => __('BIC/Swift Code', 'invoicing'),
+            'std'  =>  __('ICICGB2L129', 'invoicing'),
         );
 
     $setting['bank_transfer_sort_code'] = array(
         'type' => 'text',
         'id'   => 'bank_transfer_sort_code',
-        'name' => __( 'Sort Code', 'invoicing' ),
-        'std'  =>  __( '12-34-56', 'invoicing' ),
+        'name' => __('Sort Code', 'invoicing'),
+        'std'  =>  __('12-34-56', 'invoicing'),
     );
         
     $setting['bank_transfer_info'] = array(
             'id'   => 'bank_transfer_info',
-            'name' => __( 'Instructions', 'invoicing' ),
-            'desc' => __( 'Instructions that will be added to the thank you page and emails.', 'invoicing' ),
+            'name' => __('Instructions', 'invoicing'),
+            'desc' => __('Instructions that will be added to the thank you page and emails.', 'invoicing'),
             'type' => 'textarea',
-            'std' => __( 'Make your payment directly into our bank account. Please use your Invoice ID as the payment reference. Your invoice won\'t be processed until the funds have cleared in our account.', 'invoicing' ),
+            'std' => __('Make your payment directly into our bank account. Please use your Invoice ID as the payment reference. Your invoice won\'t be processed until the funds have cleared in our account.', 'invoicing'),
             'cols' => 37,
             'rows' => 5
         );
         
     return $setting;
 }
-add_filter( 'wpinv_gateway_settings_bank_transfer', 'wpinv_gateway_settings_bank_transfer', 10, 1 );
+add_filter('wpinv_gateway_settings_bank_transfer', 'wpinv_gateway_settings_bank_transfer', 10, 1);
 
 // Authorize.Net settings
-function wpinv_gateway_settings_authorizenet( $setting ) {
-    $setting['authorizenet_active']['desc'] = $setting['authorizenet_active']['desc'] . ' ' . __( '( currencies supported: AUD, CAD, CHF, DKK, EUR, GBP, JPY, NOK, NZD, PLN, SEK, USD, ZAR )', 'invoicing' );
-    $setting['authorizenet_desc']['std'] = __( 'Pay using a Authorize.Net to process credit card / debit card transactions.', 'invoicing' );
+function wpinv_gateway_settings_authorizenet($setting) {
+    $setting['authorizenet_active']['desc'] = $setting['authorizenet_active']['desc'] . ' ' . __('( currencies supported: AUD, CAD, CHF, DKK, EUR, GBP, JPY, NOK, NZD, PLN, SEK, USD, ZAR )', 'invoicing');
+    $setting['authorizenet_desc']['std'] = __('Pay using a Authorize.Net to process credit card / debit card transactions.', 'invoicing');
     
     $setting['authorizenet_sandbox'] = array(
             'type' => 'checkbox',
             'id'   => 'authorizenet_sandbox',
-            'name' => __( 'Authorize.Net Test Mode', 'invoicing' ),
-            'desc' => __( 'Enable Authorize.Net test mode to test payments.', 'invoicing' ),
+            'name' => __('Authorize.Net Test Mode', 'invoicing'),
+            'desc' => __('Enable Authorize.Net test mode to test payments.', 'invoicing'),
             'std'  => 1
         );
         
     $setting['authorizenet_login_id'] = array(
             'type' => 'text',
             'id'   => 'authorizenet_login_id',
-            'name' => __( 'API Login ID', 'invoicing' ),
-            'desc' => __( 'API Login ID can be obtained from Authorize.Net Account > Settings > Security Settings > General Security Settings > API Credentials & Keys. Example : 2j4rBekUnD', 'invoicing' ),
+            'name' => __('API Login ID', 'invoicing'),
+            'desc' => __('API Login ID can be obtained from Authorize.Net Account > Settings > Security Settings > General Security Settings > API Credentials & Keys. Example : 2j4rBekUnD', 'invoicing'),
             'std' => '2j4rBekUnD',
         );
     
     $setting['authorizenet_transaction_key'] = array(
             'type' => 'text',
             'id'   => 'authorizenet_transaction_key',
-            'name' => __( 'Transaction Key', 'invoicing' ),
-            'desc' => __( 'Transaction Key can be obtained from Authorize.Net Account > Settings > Security Settings > General Security Settings > API Credentials & Keys. Example : 4vyBUOJgR74679xa', 'invoicing' ),
+            'name' => __('Transaction Key', 'invoicing'),
+            'desc' => __('Transaction Key can be obtained from Authorize.Net Account > Settings > Security Settings > General Security Settings > API Credentials & Keys. Example : 4vyBUOJgR74679xa', 'invoicing'),
             'std' => '4vyBUOJgR74679xa',
         );
         
     $setting['authorizenet_md5_hash'] = array(
             'type' => 'text',
             'id'   => 'authorizenet_md5_hash',
-            'name' => __( 'MD5-Hash', 'invoicing' ),
-            'desc' => __( 'The MD5 Hash security feature allows you to authenticate transaction responses from the Authorize.Net. If you are accepting recurring payments then md5 hash will helps to validate response from Authorize.net. It can be obtained from Authorize.Net Account > Settings > Security Settings > General Settings > MD5 Hash.', 'invoicing' ),
+            'name' => __('MD5-Hash', 'invoicing'),
+            'desc' => __('The MD5 Hash security feature allows you to authenticate transaction responses from the Authorize.Net. If you are accepting recurring payments then md5 hash will helps to validate response from Authorize.net. It can be obtained from Authorize.Net Account > Settings > Security Settings > General Settings > MD5 Hash.', 'invoicing'),
             'std' => '',
         );
         
     $setting['authorizenet_ipn_url'] = array(
             'type' => 'ipn_url',
             'id'   => 'authorizenet_ipn_url',
-            'name' => __( 'Silent Post URL', 'invoicing' ),
-            'std' => wpinv_get_ipn_url( 'authorizenet' ),
-            'desc' => __( 'If you are accepting recurring payments then you must set this url at Authorize.Net Account > Settings > Transaction Format Settings > Transaction Response Settings > Silent Post URL.', 'invoicing' ),
+            'name' => __('Silent Post URL', 'invoicing'),
+            'std' => wpinv_get_ipn_url('authorizenet'),
+            'desc' => __('If you are accepting recurring payments then you must set this url at Authorize.Net Account > Settings > Transaction Format Settings > Transaction Response Settings > Silent Post URL.', 'invoicing'),
             'size' => 'large',
             'custom' => 'authorizenet',
             'readonly' => true
@@ -540,25 +540,25 @@ 
         
     return $setting;
 }
-add_filter( 'wpinv_gateway_settings_authorizenet', 'wpinv_gateway_settings_authorizenet', 10, 1 );
+add_filter('wpinv_gateway_settings_authorizenet', 'wpinv_gateway_settings_authorizenet', 10, 1);
 
 // Worldpay settings
-function wpinv_gateway_settings_worldpay( $setting ) {
-    $setting['worldpay_desc']['std'] = __( 'Pay using a Worldpay account to process credit card / debit card transactions.', 'invoicing' );
+function wpinv_gateway_settings_worldpay($setting) {
+    $setting['worldpay_desc']['std'] = __('Pay using a Worldpay account to process credit card / debit card transactions.', 'invoicing');
     
     $setting['worldpay_sandbox'] = array(
             'type' => 'checkbox',
             'id'   => 'worldpay_sandbox',
-            'name' => __( 'Worldpay Test Mode', 'invoicing' ),
-            'desc' => __( 'This provides a special Test Environment to enable you to test your installation and integration to your website before going live.', 'invoicing' ),
+            'name' => __('Worldpay Test Mode', 'invoicing'),
+            'desc' => __('This provides a special Test Environment to enable you to test your installation and integration to your website before going live.', 'invoicing'),
             'std'  => 1
         );
         
     $setting['worldpay_instId'] = array(
             'type' => 'text',
             'id'   => 'worldpay_instId',
-            'name' => __( 'Installation Id', 'invoicing' ),
-            'desc' => __( 'Your installation id. Ex: 211616', 'invoicing' ),
+            'name' => __('Installation Id', 'invoicing'),
+            'desc' => __('Your installation id. Ex: 211616', 'invoicing'),
             'std' => '211616',
         );
     /*
@@ -574,9 +574,9 @@ 
     $setting['worldpay_ipn_url'] = array(
             'type' => 'ipn_url',
             'id'   => 'worldpay_ipn_url',
-            'name' => __( 'Worldpay Callback Url', 'invoicing' ),
-            'std' => wpinv_get_ipn_url( 'worldpay' ),
-            'desc' => wp_sprintf( __( 'Login to your Worldpay Merchant Interface then enable Payment Response & Shopper Response. Next, go to the Payment Response URL field and type "%s" or "%s" for a dynamic payment response.', 'invoicing' ), '<font style="color:#000;font-style:normal">' . wpinv_get_ipn_url( 'worldpay' ) . '</font>', '<font style="color:#000;font-style:normal">&lt;wpdisplay item=MC_callback&gt;</font>' ),
+            'name' => __('Worldpay Callback Url', 'invoicing'),
+            'std' => wpinv_get_ipn_url('worldpay'),
+            'desc' => wp_sprintf(__('Login to your Worldpay Merchant Interface then enable Payment Response & Shopper Response. Next, go to the Payment Response URL field and type "%s" or "%s" for a dynamic payment response.', 'invoicing'), '<font style="color:#000;font-style:normal">' . wpinv_get_ipn_url('worldpay') . '</font>', '<font style="color:#000;font-style:normal">&lt;wpdisplay item=MC_callback&gt;</font>'),
             'size' => 'large',
             'custom' => 'worldpay',
             'readonly' => true
@@ -584,95 +584,95 @@ 
         
     return $setting;
 }
-add_filter( 'wpinv_gateway_settings_worldpay', 'wpinv_gateway_settings_worldpay', 10, 1 );
+add_filter('wpinv_gateway_settings_worldpay', 'wpinv_gateway_settings_worldpay', 10, 1);
 
-function wpinv_ipn_url_callback( $args ) {    
-    $sanitize_id = wpinv_sanitize_key( $args['id'] );
+function wpinv_ipn_url_callback($args) {    
+    $sanitize_id = wpinv_sanitize_key($args['id']);
     
     $attrs = $args['readonly'] ? ' readonly' : '';
 
-    $html = '<input style="background-color:#fefefe" type="text" ' . $attrs . ' value="' . esc_attr( $args['std'] ) . '" name="wpinv_settings[' . $sanitize_id . ']" id="wpinv_settings[' . $sanitize_id . ']" class="large-text">';
-    $html .= '<label for="wpinv_settings[' . $sanitize_id . ']">'  . $args['desc'] . '</label>';
+    $html = '<input style="background-color:#fefefe" type="text" ' . $attrs . ' value="' . esc_attr($args['std']) . '" name="wpinv_settings[' . $sanitize_id . ']" id="wpinv_settings[' . $sanitize_id . ']" class="large-text">';
+    $html .= '<label for="wpinv_settings[' . $sanitize_id . ']">' . $args['desc'] . '</label>';
 
     echo $html;
 }
 
-function wpinv_is_test_mode( $gateway = '' ) {
-    if ( empty( $gateway ) ) {
+function wpinv_is_test_mode($gateway = '') {
+    if (empty($gateway)) {
         return false;
     }
     
-    $is_test_mode = wpinv_get_option( $gateway . '_sandbox', false );
+    $is_test_mode = wpinv_get_option($gateway . '_sandbox', false);
     
-    return apply_filters( 'wpinv_is_test_mode', $is_test_mode, $gateway );
+    return apply_filters('wpinv_is_test_mode', $is_test_mode, $gateway);
 }
 
-function wpinv_get_ipn_url( $gateway = '', $args = array() ) {
-    $data = array( 'wpi-listener' => 'IPN' );
+function wpinv_get_ipn_url($gateway = '', $args = array()) {
+    $data = array('wpi-listener' => 'IPN');
     
-    if ( !empty( $gateway ) ) {
-        $data['wpi-gateway'] = wpinv_sanitize_key( $gateway );
+    if (!empty($gateway)) {
+        $data['wpi-gateway'] = wpinv_sanitize_key($gateway);
     }
     
-    $args = !empty( $args ) && is_array( $args ) ? array_merge( $data, $args ) : $data;
+    $args = !empty($args) && is_array($args) ? array_merge($data, $args) : $data;
     
-    $ipn_url = add_query_arg( $args,  home_url( 'index.php' ) );
+    $ipn_url = add_query_arg($args, home_url('index.php'));
     
-    return apply_filters( 'wpinv_ipn_url', $ipn_url );
+    return apply_filters('wpinv_ipn_url', $ipn_url);
 }
 
 function wpinv_listen_for_payment_ipn() {
     // Regular PayPal IPN
-    if ( isset( $_GET['wpi-listener'] ) && $_GET['wpi-listener'] == 'IPN' ) {
-        do_action( 'wpinv_verify_payment_ipn' );
+    if (isset($_GET['wpi-listener']) && $_GET['wpi-listener'] == 'IPN') {
+        do_action('wpinv_verify_payment_ipn');
         
-        if ( !empty( $_GET['wpi-gateway'] ) ) {
-            wpinv_error_log( sanitize_text_field( $_GET['wpi-gateway'] ), 'WP Invoicing IPN', __FILE__, __LINE__ );
-            do_action( 'wpinv_verify_' . sanitize_text_field( $_GET['wpi-gateway'] ) . '_ipn' );
+        if (!empty($_GET['wpi-gateway'])) {
+            wpinv_error_log(sanitize_text_field($_GET['wpi-gateway']), 'WP Invoicing IPN', __FILE__, __LINE__);
+            do_action('wpinv_verify_' . sanitize_text_field($_GET['wpi-gateway']) . '_ipn');
         }
     }
 }
-add_action( 'init', 'wpinv_listen_for_payment_ipn' );
+add_action('init', 'wpinv_listen_for_payment_ipn');
 
 function wpinv_get_bank_instructions() {
-    $bank_instructions = wpinv_get_option( 'bank_transfer_info' );
+    $bank_instructions = wpinv_get_option('bank_transfer_info');
     
-    return apply_filters( 'wpinv_bank_instructions', $bank_instructions );
+    return apply_filters('wpinv_bank_instructions', $bank_instructions);
 }
 
-function wpinv_get_bank_info( $filtered = false ) {
+function wpinv_get_bank_info($filtered = false) {
     $bank_fields = array(
-        'bank_transfer_ac_name'     => __( 'Account Name', 'invoicing' ),
-        'bank_transfer_ac_no'       => __( 'Account Number', 'invoicing' ),
-        'bank_transfer_bank_name'   => __( 'Bank Name', 'invoicing' ),
-        'bank_transfer_ifsc'        => __( 'IFSC code', 'invoicing' ),
-        'bank_transfer_iban'        => __( 'IBAN', 'invoicing' ),
-        'bank_transfer_bic'         => __( 'BIC/Swift code', 'invoicing' ),
-        'bank_transfer_sort_code'   => __( 'Sort Code', 'invoicing' )
+        'bank_transfer_ac_name'     => __('Account Name', 'invoicing'),
+        'bank_transfer_ac_no'       => __('Account Number', 'invoicing'),
+        'bank_transfer_bank_name'   => __('Bank Name', 'invoicing'),
+        'bank_transfer_ifsc'        => __('IFSC code', 'invoicing'),
+        'bank_transfer_iban'        => __('IBAN', 'invoicing'),
+        'bank_transfer_bic'         => __('BIC/Swift code', 'invoicing'),
+        'bank_transfer_sort_code'   => __('Sort Code', 'invoicing')
     );
     
     $bank_info = array();
-    foreach ( $bank_fields as $field => $label ) {
-        if ( $filtered && !( $value = wpinv_get_option( $field ) ) ) {
+    foreach ($bank_fields as $field => $label) {
+        if ($filtered && !($value = wpinv_get_option($field))) {
             continue;
         }
         
-        $bank_info[$field] = array( 'label' => $label, 'value' => $value );
+        $bank_info[$field] = array('label' => $label, 'value' => $value);
     }
     
-    return apply_filters( 'wpinv_bank_info', $bank_info, $filtered );
+    return apply_filters('wpinv_bank_info', $bank_info, $filtered);
 }
 
-function wpinv_process_before_send_to_gateway( $invoice, $invoice_data = array() ) {
-    if ( !empty( $invoice ) && $invoice->is_recurring() && $subscription_item = $invoice->get_recurring( true ) ) {        
+function wpinv_process_before_send_to_gateway($invoice, $invoice_data = array()) {
+    if (!empty($invoice) && $invoice->is_recurring() && $subscription_item = $invoice->get_recurring(true)) {        
         $args                          = array();
         $args['item_id']               = $subscription_item->ID;
-        $args['initial_amount']        = wpinv_round_amount( $invoice->get_total() );
-        $args['recurring_amount']      = wpinv_round_amount( $invoice->get_recurring_details( 'total' ) );
+        $args['initial_amount']        = wpinv_round_amount($invoice->get_total());
+        $args['recurring_amount']      = wpinv_round_amount($invoice->get_recurring_details('total'));
         $args['currency']              = $invoice->get_currency();
         $args['period']                = $subscription_item->get_recurring_period();
         $args['interval']              = $subscription_item->get_recurring_interval();
-        if ( $subscription_item->has_free_trial() ) {
+        if ($subscription_item->has_free_trial()) {
             $args['trial_period']      = $subscription_item->get_trial_period();
             $args['trial_interval']    = $subscription_item->get_trial_interval();
         } else {
@@ -681,25 +681,25 @@ 
         }
         $args['bill_times']            = (int)$subscription_item->get_recurring_limit();
         
-        $invoice->update_subscription( $args );
+        $invoice->update_subscription($args);
     }
 }
-add_action( 'wpinv_checkout_before_send_to_gateway', 'wpinv_process_before_send_to_gateway', 10, 2 );
+add_action('wpinv_checkout_before_send_to_gateway', 'wpinv_process_before_send_to_gateway', 10, 2);
 
-function wpinv_get_post_data( $method = 'request' ) {
+function wpinv_get_post_data($method = 'request') {
     $data       = array();
     $request    = $_REQUEST;
     
-    if ( $method == 'post' ) {
-        if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] != 'POST' ) {
+    if ($method == 'post') {
+        if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] != 'POST') {
             return $data;
         }
         
         $request = $_POST;
     }
     
-    if ( $method == 'get' ) {
-        if ( isset( $_SERVER['REQUEST_METHOD'] ) && $_SERVER['REQUEST_METHOD'] != 'GET' ) {
+    if ($method == 'get') {
+        if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] != 'GET') {
             return $data;
         }
         
@@ -710,11 +710,11 @@ 
     $post_data = '';
     
     // Fallback just in case post_max_size is lower than needed
-    if ( ini_get( 'allow_url_fopen' ) ) {
-        $post_data = file_get_contents( 'php://input' );
+    if (ini_get('allow_url_fopen')) {
+        $post_data = file_get_contents('php://input');
     } else {
         // If allow_url_fopen is not enabled, then make sure that post_max_size is large enough
-        ini_set( 'post_max_size', '12M' );
+        ini_set('post_max_size', '12M');
     }
     // Start the encoded data collection with notification command
     $encoded_data = 'cmd=_notify-validate';
@@ -723,58 +723,58 @@ 
     $arg_separator = wpinv_get_php_arg_separator_output();
 
     // Verify there is a post_data
-    if ( $post_data || strlen( $post_data ) > 0 ) {
+    if ($post_data || strlen($post_data) > 0) {
         // Append the data
         $encoded_data .= $arg_separator . $post_data;
     } else {
         // Check if POST is empty
-        if ( empty( $request ) ) {
+        if (empty($request)) {
             // Nothing to do
             return;
         } else {
             // Loop through each POST
-            foreach ( $request as $key => $value ) {
+            foreach ($request as $key => $value) {
                 // Encode the value and append the data
-                $encoded_data .= $arg_separator . "$key=" . urlencode( $value );
+                $encoded_data .= $arg_separator . "$key=" . urlencode($value);
             }
         }
     }
 
     // Convert collected post data to an array
-    parse_str( $encoded_data, $data );
+    parse_str($encoded_data, $data);
 
-    foreach ( $data as $key => $value ) {
-        if ( false !== strpos( $key, 'amp;' ) ) {
-            $new_key = str_replace( '&amp;', '&', $key );
-            $new_key = str_replace( 'amp;', '&' , $new_key );
+    foreach ($data as $key => $value) {
+        if (false !== strpos($key, 'amp;')) {
+            $new_key = str_replace('&amp;', '&', $key);
+            $new_key = str_replace('amp;', '&', $new_key);
 
-            unset( $data[ $key ] );
-            $data[ $new_key ] = sanitize_text_field( $value );
+            unset($data[$key]);
+            $data[$new_key] = sanitize_text_field($value);
         }
     }
     
     return $data;
 }
 
-function wpinv_gateway_support_subscription( $gateway ) {
+function wpinv_gateway_support_subscription($gateway) {
     $return = false;
     
-    if ( wpinv_is_gateway_active( $gateway ) ) {
-        $return = apply_filters( 'wpinv_' . $gateway . '_support_subscription', false );
+    if (wpinv_is_gateway_active($gateway)) {
+        $return = apply_filters('wpinv_' . $gateway . '_support_subscription', false);
     }
     
     return $return;
 }
 
-function wpinv_payment_gateways_on_cart( $gateways = array() ) {
-    if ( !empty( $gateways ) && wpinv_cart_has_recurring_item() ) {
-        foreach ( $gateways as $gateway => $info ) {
-            if ( !wpinv_gateway_support_subscription( $gateway ) ) {
-                unset( $gateways[$gateway] );
+function wpinv_payment_gateways_on_cart($gateways = array()) {
+    if (!empty($gateways) && wpinv_cart_has_recurring_item()) {
+        foreach ($gateways as $gateway => $info) {
+            if (!wpinv_gateway_support_subscription($gateway)) {
+                unset($gateways[$gateway]);
             }
         }
     }
     
     return $gateways;
 }
-add_filter( 'wpinv_payment_gateways_on_cart', 'wpinv_payment_gateways_on_cart', 10, 1 );
\ No newline at end of file
+add_filter('wpinv_payment_gateways_on_cart', 'wpinv_payment_gateways_on_cart', 10, 1);
\ No newline at end of file