AyeCode / invoicing

includes/wpinv-post-types.php

Spacing +117 added lines, -117 removed lines

@@ -7,38 +7,38 @@ 
  */
  
 // 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__));
 }
 
-add_action( 'init', 'wpinv_register_post_types', 1 );
+add_action('init', 'wpinv_register_post_types', 1);
 function wpinv_register_post_types() {
     
     $labels = array(
-        'name'               => _x( 'Invoices', 'post type general name', 'invoicing' ),
-        'singular_name'      => _x( 'Invoice', 'post type singular name', 'invoicing' ),
-        'menu_name'          => _x( 'Invoices', 'admin menu', 'invoicing' ),
-        'name_admin_bar'     => _x( 'Invoice', 'add new on admin bar', 'invoicing' ),
-        'add_new'            => _x( 'Add New', 'book', 'invoicing' ),
-        'add_new_item'       => __( 'Add New Invoice', 'invoicing' ),
-        'new_item'           => __( 'New Invoice', 'invoicing' ),
-        'edit_item'          => __( 'Edit Invoice', 'invoicing' ),
-        'view_item'          => __( 'View Invoice', 'invoicing' ),
-        'all_items'          => __( 'Invoices', 'invoicing' ),
-        'search_items'       => __( 'Search Invoices', 'invoicing' ),
-        'parent_item_colon'  => __( 'Parent Invoices:', 'invoicing' ),
-        'not_found'          => __( 'No invoices found.', 'invoicing' ),
-        'not_found_in_trash' => __( 'No invoices found in trash.', 'invoicing' )
+        'name'               => _x('Invoices', 'post type general name', 'invoicing'),
+        'singular_name'      => _x('Invoice', 'post type singular name', 'invoicing'),
+        'menu_name'          => _x('Invoices', 'admin menu', 'invoicing'),
+        'name_admin_bar'     => _x('Invoice', 'add new on admin bar', 'invoicing'),
+        'add_new'            => _x('Add New', 'book', 'invoicing'),
+        'add_new_item'       => __('Add New Invoice', 'invoicing'),
+        'new_item'           => __('New Invoice', 'invoicing'),
+        'edit_item'          => __('Edit Invoice', 'invoicing'),
+        'view_item'          => __('View Invoice', 'invoicing'),
+        'all_items'          => __('Invoices', 'invoicing'),
+        'search_items'       => __('Search Invoices', 'invoicing'),
+        'parent_item_colon'  => __('Parent Invoices:', 'invoicing'),
+        'not_found'          => __('No invoices found.', 'invoicing'),
+        'not_found_in_trash' => __('No invoices found in trash.', 'invoicing')
     );
-    $labels = apply_filters( 'wpinv_labels', $labels );
+    $labels = apply_filters('wpinv_labels', $labels);
     
     $menu_icon = WPINV_PLUGIN_URL . '/assets/images/favicon.ico';
-    $menu_icon = apply_filters( 'wpinv_menu_icon_invoice', $menu_icon );
+    $menu_icon = apply_filters('wpinv_menu_icon_invoice', $menu_icon);
 
     $cap_type = 'wpi_invoice';
     $args = array(
         'labels'             => $labels,
-        'description'        => __( 'This is where invoices are stored.', 'invoicing' ),
+        'description'        => __('This is where invoices are stored.', 'invoicing'),
         'public'             => true,
         'can_export'         => true,
         '_builtin'           => false,
@@ -71,13 +71,13 @@ 
         'has_archive'        => false,
         'hierarchical'       => false,
         'menu_position'      => null,
-        'supports'           => array( 'title', 'author' ),
+        'supports'           => array('title', 'author'),
         'menu_icon'          => 'dashicons-media-spreadsheet',
     );
             
-    $args = apply_filters( 'wpinv_register_post_type_invoice', $args );
+    $args = apply_filters('wpinv_register_post_type_invoice', $args);
     
-    register_post_type( 'wpi_invoice', $args );
+    register_post_type('wpi_invoice', $args);
 
     $cap_type = 'wpi_payment_form';
     register_post_type(
@@ -86,22 +86,22 @@ 
             'wpinv_register_post_type_payment_form',
             array(
                 'labels'             => array(
-                    'name'               => _x( 'Payment Forms', 'post type general name', 'invoicing' ),
-                    'singular_name'      => _x( 'Payment Form', 'post type singular name', 'invoicing' ),
-                    'menu_name'          => _x( 'Payment Forms', 'admin menu', 'invoicing' ),
-                    'name_admin_bar'     => _x( 'Payment Form', 'add new on admin bar', 'invoicing' ),
-                    'add_new'            => _x( 'Add New', 'Payment Form', 'invoicing' ),
-                    'add_new_item'       => __( 'Add New Payment Form', 'invoicing' ),
-                    'new_item'           => __( 'New Payment Form', 'invoicing' ),
-                    'edit_item'          => __( 'Edit Payment Form', 'invoicing' ),
-                    'view_item'          => __( 'View Payment Form', 'invoicing' ),
-                    'all_items'          => __( 'Payment Forms', 'invoicing' ),
-                    'search_items'       => __( 'Search Payment Forms', 'invoicing' ),
-                    'parent_item_colon'  => __( 'Parent Payment Forms:', 'invoicing' ),
-                    'not_found'          => __( 'No payment forms found.', 'invoicing' ),
-                    'not_found_in_trash' => __( 'No payment forms found in trash.', 'invoicing' )
+                    'name'               => _x('Payment Forms', 'post type general name', 'invoicing'),
+                    'singular_name'      => _x('Payment Form', 'post type singular name', 'invoicing'),
+                    'menu_name'          => _x('Payment Forms', 'admin menu', 'invoicing'),
+                    'name_admin_bar'     => _x('Payment Form', 'add new on admin bar', 'invoicing'),
+                    'add_new'            => _x('Add New', 'Payment Form', 'invoicing'),
+                    'add_new_item'       => __('Add New Payment Form', 'invoicing'),
+                    'new_item'           => __('New Payment Form', 'invoicing'),
+                    'edit_item'          => __('Edit Payment Form', 'invoicing'),
+                    'view_item'          => __('View Payment Form', 'invoicing'),
+                    'all_items'          => __('Payment Forms', 'invoicing'),
+                    'search_items'       => __('Search Payment Forms', 'invoicing'),
+                    'parent_item_colon'  => __('Parent Payment Forms:', 'invoicing'),
+                    'not_found'          => __('No payment forms found.', 'invoicing'),
+                    'not_found_in_trash' => __('No payment forms found in trash.', 'invoicing')
                 ),
-                'description'        => __( 'Stores payment forms.', 'invoicing' ),
+                'description'        => __('Stores payment forms.', 'invoicing'),
                 'public'             => false,
                 'show_ui'            => true,
                 'show_in_menu'       => wpinv_current_user_can_manage_invoicing() ? 'wpinv' : true,
@@ -112,40 +112,40 @@ 
                 'has_archive'        => false,
                 'hierarchical'       => false,
                 'menu_position'      => null,
-                'supports'           => array( 'title' ),
+                'supports'           => array('title'),
                 'menu_icon'          => 'dashicons-media-form',
             )
         )
     );
     
     $items_labels = array(
-        'name'               => _x( 'Items', 'post type general name', 'invoicing' ),
-        'singular_name'      => _x( 'Item', 'post type singular name', 'invoicing' ),
-        'menu_name'          => _x( 'Items', 'admin menu', 'invoicing' ),
-        'add_new'            => _x( 'Add New', 'wpi_item', 'invoicing' ),
-        'add_new_item'       => __( 'Add New Item', 'invoicing' ),
-        'new_item'           => __( 'New Item', 'invoicing' ),
-        'edit_item'          => __( 'Edit Item', 'invoicing' ),
-        'view_item'          => __( 'View Item', 'invoicing' ),
-        'all_items'          => __( 'Items', 'invoicing' ),
-        'search_items'       => __( 'Search Items', 'invoicing' ),
+        'name'               => _x('Items', 'post type general name', 'invoicing'),
+        'singular_name'      => _x('Item', 'post type singular name', 'invoicing'),
+        'menu_name'          => _x('Items', 'admin menu', 'invoicing'),
+        'add_new'            => _x('Add New', 'wpi_item', 'invoicing'),
+        'add_new_item'       => __('Add New Item', 'invoicing'),
+        'new_item'           => __('New Item', 'invoicing'),
+        'edit_item'          => __('Edit Item', 'invoicing'),
+        'view_item'          => __('View Item', 'invoicing'),
+        'all_items'          => __('Items', 'invoicing'),
+        'search_items'       => __('Search Items', 'invoicing'),
         'parent_item_colon'  => '',
-        'not_found'          => __( 'No items found.', 'invoicing' ),
-        'not_found_in_trash' => __( 'No items found in trash.', 'invoicing' )
+        'not_found'          => __('No items found.', 'invoicing'),
+        'not_found_in_trash' => __('No items found in trash.', 'invoicing')
     );
-    $items_labels = apply_filters( 'wpinv_items_labels', $items_labels );
+    $items_labels = apply_filters('wpinv_items_labels', $items_labels);
 
     $cap_type          = 'wpi_item';
     $invoice_item_args = array(
         'labels'                => $items_labels,
-        'description'           => __( 'This is where you can add new invoice items.', 'invoicing' ),
+        'description'           => __('This is where you can add new invoice items.', 'invoicing'),
         'public'                => false,
         'has_archive'           => false,
         '_builtin'              => false,
         'show_ui'               => true,
         'show_in_menu'          => wpinv_current_user_can_manage_invoicing() ? 'wpinv' : false,
         'show_in_nav_menus'     => false,
-        'supports'              => array( 'title', 'excerpt' ),
+        'supports'              => array('title', 'excerpt'),
         'register_meta_box_cb'  => 'wpinv_register_item_meta_boxes',
         'rewrite'               => false,
         'query_var'             => false,
@@ -172,33 +172,33 @@ 
         ),
         'can_export'            => true,
     );
-    $invoice_item_args = apply_filters( 'wpinv_register_post_type_invoice_item', $invoice_item_args );
+    $invoice_item_args = apply_filters('wpinv_register_post_type_invoice_item', $invoice_item_args);
 
-    register_post_type( 'wpi_item', $invoice_item_args );
+    register_post_type('wpi_item', $invoice_item_args);
     
     $labels = array(
-        'name'               => _x( 'Discounts', 'post type general name', 'invoicing' ),
-        'singular_name'      => _x( 'Discount', 'post type singular name', 'invoicing' ),
-        'menu_name'          => _x( 'Discounts', 'admin menu', 'invoicing' ),
-        'name_admin_bar'     => _x( 'Discount', 'add new on admin bar', 'invoicing' ),
-        'add_new'            => _x( 'Add New', 'book', 'invoicing' ),
-        'add_new_item'       => __( 'Add New Discount', 'invoicing' ),
-        'new_item'           => __( 'New Discount', 'invoicing' ),
-        'edit_item'          => __( 'Edit Discount', 'invoicing' ),
-        'view_item'          => __( 'View Discount', 'invoicing' ),
-        'all_items'          => __( 'Discounts', 'invoicing' ),
-        'search_items'       => __( 'Search Discounts', 'invoicing' ),
-        'parent_item_colon'  => __( 'Parent Discounts:', 'invoicing' ),
-        'not_found'          => __( 'No discounts found.', 'invoicing' ),
-        'not_found_in_trash' => __( 'No discounts found in trash.', 'invoicing' )
+        'name'               => _x('Discounts', 'post type general name', 'invoicing'),
+        'singular_name'      => _x('Discount', 'post type singular name', 'invoicing'),
+        'menu_name'          => _x('Discounts', 'admin menu', 'invoicing'),
+        'name_admin_bar'     => _x('Discount', 'add new on admin bar', 'invoicing'),
+        'add_new'            => _x('Add New', 'book', 'invoicing'),
+        'add_new_item'       => __('Add New Discount', 'invoicing'),
+        'new_item'           => __('New Discount', 'invoicing'),
+        'edit_item'          => __('Edit Discount', 'invoicing'),
+        'view_item'          => __('View Discount', 'invoicing'),
+        'all_items'          => __('Discounts', 'invoicing'),
+        'search_items'       => __('Search Discounts', 'invoicing'),
+        'parent_item_colon'  => __('Parent Discounts:', 'invoicing'),
+        'not_found'          => __('No discounts found.', 'invoicing'),
+        'not_found_in_trash' => __('No discounts found in trash.', 'invoicing')
     );
-    $labels = apply_filters( 'wpinv_discounts_labels', $labels );
+    $labels = apply_filters('wpinv_discounts_labels', $labels);
 
     $cap_type = 'wpi_discount';
     
     $args = array(
         'labels'             => $labels,
-        'description'        => __( 'This is where you can add new discounts that users can use in invoices.', 'invoicing' ),
+        'description'        => __('This is where you can add new discounts that users can use in invoices.', 'invoicing'),
         'public'             => false,
         'can_export'         => true,
         '_builtin'           => false,
@@ -229,7 +229,7 @@ 
         ),
         'has_archive'        => false,
         'hierarchical'       => false,
-        'supports'           => array( 'title', 'excerpt' ),
+        'supports'           => array('title', 'excerpt'),
         'register_meta_box_cb'  => 'wpinv_register_discount_meta_boxes',
         'show_in_nav_menus'  => false,
         'show_in_admin_bar'  => true,
@@ -237,106 +237,106 @@ 
         'menu_position'      => null,
     );
             
-    $args = apply_filters( 'wpinv_register_post_type_discount', $args );
+    $args = apply_filters('wpinv_register_post_type_discount', $args);
     
-    register_post_type( 'wpi_discount', $args );
+    register_post_type('wpi_discount', $args);
 }
 
 function wpinv_get_default_labels() {
     $defaults = array(
-       'singular' => __( 'Invoice', 'invoicing' ),
-       'plural'   => __( 'Invoices', 'invoicing' )
+       'singular' => __('Invoice', 'invoicing'),
+       'plural'   => __('Invoices', 'invoicing')
     );
     
-    return apply_filters( 'wpinv_default_invoices_name', $defaults );
+    return apply_filters('wpinv_default_invoices_name', $defaults);
 }
 
-function wpinv_get_label_singular( $lowercase = false ) {
+function wpinv_get_label_singular($lowercase = false) {
     $defaults = wpinv_get_default_labels();
     
-    return ($lowercase) ? strtolower( $defaults['singular'] ) : $defaults['singular'];
+    return ($lowercase) ? strtolower($defaults['singular']) : $defaults['singular'];
 }
 
-function wpinv_get_label_plural( $lowercase = false ) {
+function wpinv_get_label_plural($lowercase = false) {
     $defaults = wpinv_get_default_labels();
     
-    return ( $lowercase ) ? strtolower( $defaults['plural'] ) : $defaults['plural'];
+    return ($lowercase) ? strtolower($defaults['plural']) : $defaults['plural'];
 }
 
-function wpinv_change_default_title( $title ) {
-     if ( !is_admin() ) {
+function wpinv_change_default_title($title) {
+     if (!is_admin()) {
         $label = wpinv_get_label_singular();
-        $title = sprintf( __( 'Enter %s name here', 'invoicing' ), $label );
+        $title = sprintf(__('Enter %s name here', 'invoicing'), $label);
         return $title;
      }
 
      $screen = get_current_screen();
 
-     if ( 'wpi_invoice' == $screen->post_type ) {
+     if ('wpi_invoice' == $screen->post_type) {
         $label = wpinv_get_label_singular();
-        $title = sprintf( __( 'Enter %s name here', 'invoicing' ), $label );
+        $title = sprintf(__('Enter %s name here', 'invoicing'), $label);
      }
 
      return $title;
 }
-add_filter( 'enter_title_here', 'wpinv_change_default_title' );
+add_filter('enter_title_here', 'wpinv_change_default_title');
 
 function wpinv_register_post_status() {
-    register_post_status( 'wpi-pending', array(
-        'label'                     => _x( 'Pending', 'Invoice status', 'invoicing' ),
+    register_post_status('wpi-pending', array(
+        'label'                     => _x('Pending', 'Invoice status', 'invoicing'),
         'public'                    => true,
         'exclude_from_search'       => true,
         'show_in_admin_all_list'    => true,
         'show_in_admin_status_list' => true,
-        'label_count'               => _n_noop( 'Pending <span class="count">(%s)</span>', 'Pending <span class="count">(%s)</span>', 'invoicing' )
-    ) );
-    register_post_status( 'wpi-processing', array(
-        'label'                     => _x( 'Processing', 'Invoice status', 'invoicing' ),
+        'label_count'               => _n_noop('Pending <span class="count">(%s)</span>', 'Pending <span class="count">(%s)</span>', 'invoicing')
+    ));
+    register_post_status('wpi-processing', array(
+        'label'                     => _x('Processing', 'Invoice status', 'invoicing'),
         'public'                    => true,
         'exclude_from_search'       => true,
         'show_in_admin_all_list'    => true,
         'show_in_admin_status_list' => true,
-        'label_count'               => _n_noop( 'Processing <span class="count">(%s)</span>', 'Processing <span class="count">(%s)</span>', 'invoicing' )
-    ) );
-    register_post_status( 'wpi-onhold', array(
-        'label'                     => _x( 'On Hold', 'Invoice status', 'invoicing' ),
+        'label_count'               => _n_noop('Processing <span class="count">(%s)</span>', 'Processing <span class="count">(%s)</span>', 'invoicing')
+    ));
+    register_post_status('wpi-onhold', array(
+        'label'                     => _x('On Hold', 'Invoice status', 'invoicing'),
         'public'                    => true,
         'exclude_from_search'       => true,
         'show_in_admin_all_list'    => true,
         'show_in_admin_status_list' => true,
-        'label_count'               => _n_noop( 'On Hold <span class="count">(%s)</span>', 'On Hold <span class="count">(%s)</span>', 'invoicing' )
-    ) );
-    register_post_status( 'wpi-cancelled', array(
-        'label'                     => _x( 'Cancelled', 'Invoice status', 'invoicing' ),
+        'label_count'               => _n_noop('On Hold <span class="count">(%s)</span>', 'On Hold <span class="count">(%s)</span>', 'invoicing')
+    ));
+    register_post_status('wpi-cancelled', array(
+        'label'                     => _x('Cancelled', 'Invoice status', 'invoicing'),
         'public'                    => true,
         'exclude_from_search'       => true,
         'show_in_admin_all_list'    => true,
         'show_in_admin_status_list' => true,
-        'label_count'               => _n_noop( 'Cancelled <span class="count">(%s)</span>', 'Cancelled <span class="count">(%s)</span>', 'invoicing' )
-    ) );
-    register_post_status( 'wpi-refunded', array(
-        'label'                     => _x( 'Refunded', 'Invoice status', 'invoicing' ),
+        'label_count'               => _n_noop('Cancelled <span class="count">(%s)</span>', 'Cancelled <span class="count">(%s)</span>', 'invoicing')
+    ));
+    register_post_status('wpi-refunded', array(
+        'label'                     => _x('Refunded', 'Invoice status', 'invoicing'),
         'public'                    => true,
         'exclude_from_search'       => true,
         'show_in_admin_all_list'    => true,
         'show_in_admin_status_list' => true,
-        'label_count'               => _n_noop( 'Refunded <span class="count">(%s)</span>', 'Refunded <span class="count">(%s)</span>', 'invoicing' )
-    ) );
-    register_post_status( 'wpi-failed', array(
-        'label'                     => _x( 'Failed', 'Invoice status', 'invoicing' ),
+        'label_count'               => _n_noop('Refunded <span class="count">(%s)</span>', 'Refunded <span class="count">(%s)</span>', 'invoicing')
+    ));
+    register_post_status('wpi-failed', array(
+        'label'                     => _x('Failed', 'Invoice status', 'invoicing'),
         'public'                    => true,
         'exclude_from_search'       => true,
         'show_in_admin_all_list'    => true,
         'show_in_admin_status_list' => true,
-        'label_count'               => _n_noop( 'Failed <span class="count">(%s)</span>', 'Failed <span class="count">(%s)</span>', 'invoicing' )
-    ) );
-    register_post_status( 'wpi-renewal', array(
-        'label'                     => _x( 'Renewal', 'Invoice status', 'invoicing' ),
+        'label_count'               => _n_noop('Failed <span class="count">(%s)</span>', 'Failed <span class="count">(%s)</span>', 'invoicing')
+    ));
+    register_post_status('wpi-renewal', array(
+        'label'                     => _x('Renewal', 'Invoice status', 'invoicing'),
         'public'                    => true,
         'exclude_from_search'       => true,
         'show_in_admin_all_list'    => true,
         'show_in_admin_status_list' => true,
-        'label_count'               => _n_noop( 'Renewal <span class="count">(%s)</span>', 'Renewal <span class="count">(%s)</span>', 'invoicing' )
-    ) );
+        'label_count'               => _n_noop('Renewal <span class="count">(%s)</span>', 'Renewal <span class="count">(%s)</span>', 'invoicing')
+    ));
 }
-add_action( 'init', 'wpinv_register_post_status', 10 );
+add_action('init', 'wpinv_register_post_status', 10);

includes/wpinv-template-functions.php

Spacing +743 added lines, -743 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', wpinv_get_theme_template_dir_name() );
+    return apply_filters('wpinv_template_path', wpinv_get_theme_template_dir_name());
 }
 
-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 ( $invoice->post_type == 'wpi_invoice' ) { ?>
-        <a class="btn btn-primary btn-sm btn-print-invoice" onclick="window.print();" href="javascript:void(0)"><?php _e( 'Print Invoice', 'invoicing' ); ?></a>
-        <?php if ( is_user_logged_in() ) { ?>
-        &nbsp;&nbsp;<a class="btn btn-warning btn-sm btn-invoice-history" href="<?php echo esc_url( wpinv_get_history_page_uri() ); ?>"><?php _e( 'Invoice History', 'invoicing' ); ?></a>
+    if ($invoice->post_type == 'wpi_invoice') { ?>
+        <a class="btn btn-primary btn-sm btn-print-invoice" 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 btn-invoice-history" 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;
 }
@@ -208,159 +208,159 @@ 
 	$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', 'invoicing' ) );
+	return trailingslashit(apply_filters('wpinv_templates_dir', 'invoicing'));
 }
 
 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( 'invoice_subscription_page' );
+	$pages[] = wpinv_get_option('success_page');
+	$pages[] = wpinv_get_option('failure_page');
+	$pages[] = wpinv_get_option('invoice_history_page');
+	$pages[] = wpinv_get_option('invoice_subscription_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 ) {
-	$classes = (array)$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_subscriptions_history_page() ) {
+	if (wpinv_is_subscriptions_history_page()) {
 		$classes[] = 'wpinv-subscription';
 		$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) {
 
     $options = array(
-        '1'  => __( 'January', 'invoicing' ),
-        '2'  => __( 'February', 'invoicing' ),
-        '3'  => __( 'March', 'invoicing' ),
-        '4'  => __( 'April', 'invoicing' ),
-        '5'  => __( 'May', 'invoicing' ),
-        '6'  => __( 'June', 'invoicing' ),
-        '7'  => __( 'July', 'invoicing' ),
-        '8'  => __( 'August', 'invoicing' ),
-        '9'  => __( 'September', 'invoicing' ),
-        '10' => __( 'October', 'invoicing' ),
-        '11' => __( 'November', 'invoicing' ),
-        '12' => __( 'December', 'invoicing' ),
+        '1'  => __('January', 'invoicing'),
+        '2'  => __('February', 'invoicing'),
+        '3'  => __('March', 'invoicing'),
+        '4'  => __('April', 'invoicing'),
+        '5'  => __('May', 'invoicing'),
+        '6'  => __('June', 'invoicing'),
+        '7'  => __('July', 'invoicing'),
+        '8'  => __('August', 'invoicing'),
+        '9'  => __('September', 'invoicing'),
+        '10' => __('October', 'invoicing'),
+        '11' => __('November', 'invoicing'),
+        '12' => __('December', 'invoicing'),
     );
 
     // If no month is selected, default to the current month
-    $selected = empty( $selected ) ? date( 'n' ) : $selected;
+    $selected = empty($selected) ? date('n') : $selected;
 
-    $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,
@@ -369,8 +369,8 @@ 
         'selected'         => 0,
         '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,
@@ -378,74 +378,74 @@ 
         '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( $args['placeholder'] ) {
+    if ($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>';
         }
     }
 
@@ -454,7 +454,7 @@ 
     return $output;
 }
 
-function wpinv_item_dropdown( $args = array() ) {
+function wpinv_item_dropdown($args = array()) {
     $defaults = array(
         'name'              => 'wpi_item',
         'id'                => 'wpi_item',
@@ -462,14 +462,14 @@ 
         'multiple'          => false,
         'selected'          => 0,
         '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',
@@ -478,44 +478,44 @@ 
         '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'],
@@ -526,12 +526,12 @@ 
         '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,
@@ -542,38 +542,38 @@ 
         )
     );
 
-    $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,
@@ -583,51 +583,51 @@ 
         '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,
@@ -638,31 +638,31 @@ 
         'placeholder' => '',
     );
 
-    $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'] ) . '" placeholder="' . esc_attr( $args['placeholder'] ) . '" 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']) . '" placeholder="' . esc_attr($args['placeholder']) . '" id="' . wpinv_sanitize_key($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'       => '',
@@ -671,13 +671,13 @@ 
         '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;
@@ -686,7 +686,7 @@ 
 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    = '';
@@ -697,69 +697,69 @@ 
     $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>
@@ -767,18 +767,18 @@ 
 <?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);
         }
     }
 
@@ -787,7 +787,7 @@ 
 
 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();
@@ -811,7 +811,7 @@ 
     
     $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() {
@@ -821,107 +821,107 @@ 
     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 ) ) && ( $invoice->is_paid() || $invoice->is_refunded() ) ) { ?>
+        <?php if (($gateway_name = wpinv_get_payment_gateway_name($invoice_id)) && ($invoice->is_paid() || $invoice->is_refunded())) { ?>
             <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 do_action( 'wpinv_display_details_before_due_date', $invoice_id ); ?>
-        <?php if ( wpinv_get_option( 'overdue_active' ) && $invoice->needs_payment() && ( $due_date = $invoice->get_due_date( true ) ) ) { ?>
+        <?php do_action('wpinv_display_details_before_due_date', $invoice_id); ?>
+        <?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 do_action( 'wpinv_display_details_after_due_date', $invoice_id ); ?>
-        <?php if ( $owner_vat_number = $wpinv_euvat->get_vat_number() ) { ?>
+        <?php do_action('wpinv_display_details_after_due_date', $invoice_id); ?>
+        <?php if ($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
@@ -937,84 +937,84 @@ 
  * @param  string $separator How to separate address lines.
  * @return string
  */
-function wpinv_get_invoice_address_markup( $billing_details, $separator = '<br/>' ) {
+function wpinv_get_invoice_address_markup($billing_details, $separator = '<br/>') {
 
     // Retrieve the address markup...
-    $country= empty( $billing_details['country'] ) ? '' : $billing_details['country'];
-    $format = wpinv_get_full_address_format( $country );
+    $country = empty($billing_details['country']) ? '' : $billing_details['country'];
+    $format = wpinv_get_full_address_format($country);
 
     // ... and the replacements.
-    $replacements = wpinv_get_invoice_address_replacements( $billing_details );
+    $replacements = wpinv_get_invoice_address_replacements($billing_details);
 
-    $formatted_address = str_ireplace( array_keys( $replacements ), $replacements, $format );
+    $formatted_address = str_ireplace(array_keys($replacements), $replacements, $format);
     
 	// Remove unavailable tags.
-    $formatted_address = preg_replace( "/\{\{\w+\}\}/", '', $formatted_address );
+    $formatted_address = preg_replace("/\{\{\w+\}\}/", '', $formatted_address);
 
     // Clean up white space.
-	$formatted_address = preg_replace( '/  +/', ' ', trim( $formatted_address ) );
-    $formatted_address = preg_replace( '/\n\n+/', "\n", $formatted_address );
+	$formatted_address = preg_replace('/  +/', ' ', trim($formatted_address));
+    $formatted_address = preg_replace('/\n\n+/', "\n", $formatted_address);
     
     // Break newlines apart and remove empty lines/trim commas and white space.
-	$formatted_address = array_filter( array_map( 'wpinv_trim_formatted_address_line', explode( "\n", $formatted_address ) ) );
+	$formatted_address = array_filter(array_map('wpinv_trim_formatted_address_line', explode("\n", $formatted_address)));
 
     // Add html breaks.
-	$formatted_address = implode( $separator, $formatted_address );
+	$formatted_address = implode($separator, $formatted_address);
 
 	// We're done!
 	return $formatted_address;
     
 }
 
-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();
     
-    $address_row = wpinv_get_invoice_address_markup( $billing_details );
+    $address_row = wpinv_get_invoice_address_markup($billing_details);
 
-    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();
     $use_taxes          = wpinv_use_taxes();
-    if ( !$use_taxes && (float)$invoice->get_tax() > 0 ) {
+    if (!$use_taxes && (float) $invoice->get_tax() > 0) {
         $use_taxes = true;
     }
-    $zero_tax           = !(float)$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 ) ) : '';
+    $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)) : '';
 
     $cart_details       = $invoice->get_cart_details();
     $ajax_cart_details  = $cart_details;
@@ -1023,67 +1023,67 @@ 
     <table class="table table-sm table-bordered table-responsive">
         <thead>
             <tr>
-                <th class="name"><strong><?php _e( "Item Name", "invoicing" );?></strong></th>
-                <th class="rate"><strong><?php _e( "Price", "invoicing" );?></strong></th>
+                <th class="name"><strong><?php _e("Item Name", "invoicing"); ?></strong></th>
+                <th class="rate"><strong><?php _e("Price", "invoicing"); ?></strong></th>
                 <?php if ($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    = '';
-	                $item_name    = '';
+	                $item_name = '';
                     $cols       = 3;
-                    if ( !empty($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
                     }
 
-                    $action = apply_filters( 'wpinv_display_line_item_action', '', $cart_item, $invoice, $cols );
+                    $action = apply_filters('wpinv_display_line_item_action', '', $cart_item, $invoice, $cols);
 
-                    $line_item = '<tr class="row-' . ( ($count % 2 == 0) ? 'even' : 'odd' ) . ' wpinv-item">';
-                        $line_item .= '<td class="name">' . $action. 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">' . $action . esc_html__($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>';
@@ -1092,55 +1092,55 @@ 
                             $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>
@@ -1152,56 +1152,56 @@ 
 /**
  * @param WPInv_Invoice $invoice
  */
-function wpinv_display_invoice_notes( $invoice ) {
+function wpinv_display_invoice_notes($invoice) {
 
-    $notes = wpinv_get_invoice_notes( $invoice->ID, 'customer' );
+    $notes = wpinv_get_invoice_notes($invoice->ID, 'customer');
 
-    if ( empty( $notes ) ) {
+    if (empty($notes)) {
         return;
     }
 
     echo '<div class="wpi_invoice_notes_container">';
-    echo '<h2>' . __( 'Invoice Notes', 'invoicing' ) .'</h2>';
+    echo '<h2>' . __('Invoice Notes', 'invoicing') . '</h2>';
     echo '<ul class="wpi_invoice_notes">';
 
-    foreach( $notes as $note ) {
-        wpinv_get_invoice_note_line_item( $note );
+    foreach ($notes as $note) {
+        wpinv_get_invoice_note_line_item($note);
     }
 
     echo '</ul>';
     echo '</div>';
 }
-add_action( 'wpinv_invoice_print_after_line_items', 'wpinv_display_invoice_notes' );
+add_action('wpinv_invoice_print_after_line_items', 'wpinv_display_invoice_notes');
 
-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>
@@ -1209,82 +1209,82 @@ 
                 <?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');
 
     $custom_css = wpinv_get_option('template_custom_css');
-    if(isset($custom_css) && !empty($custom_css)){
-        $custom_css     = wp_kses( $custom_css, array( '\'', '\"' ) );
-        $custom_css     = str_replace( '&gt;', '>', $custom_css );
+    if (isset($custom_css) && !empty($custom_css)) {
+        $custom_css     = wp_kses($custom_css, array('\'', '\"'));
+        $custom_css     = str_replace('&gt;', '>', $custom_css);
         echo '<style type="text/css">';
         echo $custom_css;
         echo '</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();
+    $invoice_id = (int) wpinv_get_invoice_cart_id();
     if (empty($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'];
@@ -1300,98 +1300,98 @@ 
         '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() && !$invoice->is_refunded() ) {
+            if (!$invoice->is_paid() && !$invoice->is_refunded()) {
                 $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();
 }
@@ -1403,32 +1403,32 @@ 
     $wpi_checkout_id = wpinv_get_invoice_cart_id();
 
     //Maybe update the prices
-    if(! empty( $_GET['wpi_dynamic_item'] ) && ! empty( $_GET['wpi_dynamic_price'] ) ) {
+    if (!empty($_GET['wpi_dynamic_item']) && !empty($_GET['wpi_dynamic_price'])) {
 
         //If the invoice exists, update it with new pricing details
-        if (! empty( $wpi_checkout_id ) ) {
+        if (!empty($wpi_checkout_id)) {
 
             $_invoice       = wpinv_get_invoice_cart();
             $_cart_details  = $_invoice->get_cart_details();
-            $_dynamic_item  = sanitize_text_field( $_GET['wpi_dynamic_item'] );
+            $_dynamic_item  = sanitize_text_field($_GET['wpi_dynamic_item']);
 
             //First, fetch the item
-            $item    = new WPInv_Item( $_dynamic_item );
+            $item = new WPInv_Item($_dynamic_item);
     
             //Next, ensure it supports dynamic pricing...
-            if( $item->supports_dynamic_pricing() && $item->get_is_dynamic_pricing() ) {
+            if ($item->supports_dynamic_pricing() && $item->get_is_dynamic_pricing()) {
                 
                 //... and that the new price is not lower than the minimum price
-                $_dynamic_price = (float) wpinv_sanitize_amount( sanitize_text_field( $_GET['wpi_dynamic_price'] ) );
-                if( $_dynamic_price < $item->get_minimum_price() ) {
+                $_dynamic_price = (float) wpinv_sanitize_amount(sanitize_text_field($_GET['wpi_dynamic_price']));
+                if ($_dynamic_price < $item->get_minimum_price()) {
                     $_dynamic_price = $item->get_minimum_price();
                 }
 
                 //Finally, update our invoice with the new price
-                if ( !empty( $_cart_details ) ) {
+                if (!empty($_cart_details)) {
 
-                    foreach ( $_cart_details as $key => $item ) {
-                        if ( !empty( $item['id'] ) && $_dynamic_item == $item['id'] ) {
+                    foreach ($_cart_details as $key => $item) {
+                        if (!empty($item['id']) && $_dynamic_item == $item['id']) {
                             $_cart_details[$key]['custom_price'] = $_dynamic_price;
                             $_cart_details[$key]['item_price']   = $_dynamic_price;
                         }
@@ -1436,8 +1436,8 @@ 
 
                     $_meta = $_invoice->get_meta();
                     $_meta['cart_details'] = $_cart_details;
-                    $_invoice->set( 'payment_meta', $_meta );
-                    $_invoice->set( 'cart_details', $_cart_details );
+                    $_invoice->set('payment_meta', $_meta);
+                    $_invoice->set('cart_details', $_cart_details);
                     $_invoice->recalculate_totals();
 
                 }
@@ -1448,60 +1448,60 @@ 
 
     }
 
-    $form_action  = esc_url( wpinv_get_checkout_uri() );
+    $form_action = esc_url(wpinv_get_checkout_uri());
 
     ob_start();
-	    do_action( 'wpinv_checkout_content_before' );
+	    do_action('wpinv_checkout_content_before');
         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-->';
-	    do_action( 'wpinv_checkout_content_after' );
+	    do_action('wpinv_checkout_content_after');
     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;
 
     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>');
 }
 
 /**
@@ -1513,83 +1513,83 @@ 
 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_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">
@@ -1602,10 +1602,10 @@ 
 <?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($){
@@ -1620,125 +1620,125 @@ 
 <?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 );
-    $invoice = wpinv_get_invoice( 0, true );
+    $gateways = wpinv_get_enabled_payment_gateways(true);
+    $gateways = apply_filters('wpinv_payment_gateways_on_cart', $gateways);
+    $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 );
+    $invoice_id = (int) $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;" data-free="1"' : '' ); ?>>
-            <?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;" data-free="1"' : ''); ?>>
+            <?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' );
-
-                    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 );
-                            $gateway_label = wpinv_get_gateway_checkout_label( $gateway_id );
-                            $description   = wpinv_get_gateway_description( $gateway_id );
+                    do_action('wpinv_payment_mode_before_gateways');
+
+                    if (!empty($gateways)) {
+                        foreach ($gateways as $gateway_id => $gateway) {
+                            $checked       = checked($gateway_id, $chosen_gateway, false);
+                            $button_label  = wpinv_get_gateway_button_label($gateway_id);
+                            $gateway_label = wpinv_get_gateway_checkout_label($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( $gateway_label ); ?></label>
+                                    <label><input type="radio" data-button-text="<?php echo esc_attr($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_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 _e( $description, 'invoicing' ); ?></div>
+                                <div style="display:none;" class="payment_box wpi_gateway_<?php echo esc_attr($gateway_id); ?>" role="alert">
+                                    <?php if (!empty($description)) { ?>
+                                        <div class="wpi-gateway-desc alert alert-info"><?php _e($description, 'invoicing'); ?></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>';
+                        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()) {
         $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',
@@ -1746,16 +1746,16 @@ 
                             'show_option_all'  => false,
                             'show_option_none' => false,
                             'class'            => 'wpi-input form-control wpi_select2',
-                            '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',
@@ -1763,61 +1763,61 @@ 
                                 'show_option_all'  => false,
                                 'show_option_none' => false,
                                 'class'            => 'wpi-input form-control wpi_select2',
-                                '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" />
@@ -1827,9 +1827,9 @@ 
 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() {
@@ -1838,84 +1838,84 @@ 
 <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_accept_tandc() {
-    $page = wpinv_get_option( 'tandc_page' );
+    $page = wpinv_get_option('tandc_page');
     ?>
     <div id="wpinv_checkout_tandc" class="panel panel-success">
         <div class="panel-body">
             <?php echo wpinv_get_policy_text(); ?>
             <?php
-            if(isset($page) && (int)$page > 0 && apply_filters( 'wpinv_checkout_show_terms', true )){
-                $terms_link = esc_url( get_permalink( $page ) );
+            if (isset($page) && (int) $page > 0 && apply_filters('wpinv_checkout_show_terms', true)) {
+                $terms_link = esc_url(get_permalink($page));
                 ?>
                 <label class="">
-                    <input type="checkbox" class="wpi-terms-checkbox" name="wpi_terms" id="wpi-terms" <?php checked( apply_filters( 'wpinv_terms_is_checked_default', isset( $_POST['wpi_terms'] ) ), true ); ?>> <span><?php printf( __( 'I&rsquo;ve read and accept the <a href="%s" target="_blank" class="wpi-terms-and-conditions-link">terms &amp; conditions</a>', 'invoicing' ), $terms_link ); ?></span> <span class="wpi-required">*</span>
+                    <input type="checkbox" class="wpi-terms-checkbox" name="wpi_terms" id="wpi-terms" <?php checked(apply_filters('wpinv_terms_is_checked_default', isset($_POST['wpi_terms'])), true); ?>> <span><?php printf(__('I&rsquo;ve read and accept the <a href="%s" target="_blank" class="wpi-terms-and-conditions-link">terms &amp; conditions</a>', 'invoicing'), $terms_link); ?></span> <span class="wpi-required">*</span>
                 </label>
             <?php } ?>
         </div>
     </div>
     <?php
 }
-add_action( 'wpinv_checkout_form_bottom', 'wpinv_checkout_accept_tandc', 9995 );
+add_action('wpinv_checkout_form_bottom', 'wpinv_checkout_accept_tandc', 9995);
 
 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 = wpinv_get_invoice_address_markup( $billing_details );
+    $address_row = wpinv_get_invoice_address_markup($billing_details);
 
     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>
             <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>
@@ -1923,74 +1923,74 @@ 
     <?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 ) ) {
-        $subscription = wpinv_get_subscription( $invoice, true );
+function wpinv_invoice_subscription_details($invoice) {
+    if (!empty($invoice) && $invoice->is_recurring() && !wpinv_is_subscription_payment($invoice)) {
+        $subscription = wpinv_get_subscription($invoice, true);
 
-        if ( empty( $subscription ) ) {
+        if (empty($subscription)) {
             return;
         }
 
@@ -2001,15 +2001,15 @@ 
         $payments = $subscription->get_child_payments();
         ?>
         <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>
@@ -2023,29 +2023,29 @@ 
                 </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
                         $i = 1;
-                        foreach ( $payments as $payment ) {
+                        foreach ($payments as $payment) {
                             $invoice_id = $payment->ID;
                     ?>
                     <tr>
-                        <th scope="row"><?php echo $i;?></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 $i; ?></th>
+                        <td><?php echo wpinv_invoice_link($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 $i++; } ?>
                 </tbody>
@@ -2056,52 +2056,52 @@ 
     }
 }
 
-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">
@@ -2113,43 +2113,43 @@ 
 }
 // 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   = array('note');
+    $note_classes[] = get_comment_meta($note->comment_ID, '_wpi_customer_note', true) ? 'customer-note' : '';
     $note_classes[] = $note->comment_author === 'System' ? 'system-note' : '';
-    $note_classes   = apply_filters( 'wpinv_invoice_note_class', array_filter( $note_classes ), $note );
-    $note_classes   = !empty( $note_classes ) ? implode( ' ', $note_classes ) : '';
+    $note_classes   = apply_filters('wpinv_invoice_note_class', array_filter($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 ( is_admin() && ( $note->comment_author !== 'System' || wpinv_current_user_can_manage_invoicing() ) ) { ?>
-                <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($note->comment_date))); ?></abbr>&nbsp;&nbsp;
+            <?php if (is_admin() && ($note->comment_author !== 'System' || wpinv_current_user_can_manage_invoicing())) { ?>
+                <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;
@@ -2159,43 +2159,43 @@ 
 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 was 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' );
+    $error = __('This invoice is only viewable by clicking on the invoice link that was sent to you via email.', 'invoicing');
+    if (!empty($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' );
+add_action('wpinv_invalid_invoice_content', 'wpinv_invalid_invoice_content');
 
-add_action( 'wpinv_checkout_billing_fields_last', 'wpinv_force_company_name_field');
-function wpinv_force_company_name_field(){
+add_action('wpinv_checkout_billing_fields_last', 'wpinv_force_company_name_field');
+function wpinv_force_company_name_field() {
     $invoice = wpinv_get_invoice_cart();
-    $user_id = wpinv_get_user_id( $invoice->ID );
-    $company = empty( $user_id ) ? "" : get_user_meta( $user_id, '_wpinv_company', true );
-    if ( 1 == wpinv_get_option( 'force_show_company' ) && !wpinv_use_taxes() ) {
+    $user_id = wpinv_get_user_id($invoice->ID);
+    $company = empty($user_id) ? "" : get_user_meta($user_id, '_wpinv_company', true);
+    if (1 == wpinv_get_option('force_show_company') && !wpinv_use_taxes()) {
         ?>
         <p class="wpi-cart-field wpi-col2 wpi-colf">
             <label for="wpinv_company" class="wpi-label"><?php _e('Company Name', 'invoicing'); ?></label>
@@ -2220,21 +2220,21 @@ 
  * @return string
  */
 function wpinv_get_policy_text() {
-    $privacy_page_id = get_option( 'wp_page_for_privacy_policy', 0 );
+    $privacy_page_id = get_option('wp_page_for_privacy_policy', 0);
 
-    $text = wpinv_get_option('invoicing_privacy_checkout_message', sprintf( __( 'Your personal data will be used to process your invoice, payment and for other purposes described in our %s.', 'invoicing' ), '[wpinv_privacy_policy]' ));
+    $text = wpinv_get_option('invoicing_privacy_checkout_message', sprintf(__('Your personal data will be used to process your invoice, payment and for other purposes described in our %s.', 'invoicing'), '[wpinv_privacy_policy]'));
 
-    if(!$privacy_page_id){
-        $privacy_page_id = wpinv_get_option( 'privacy_page', 0 );
+    if (!$privacy_page_id) {
+        $privacy_page_id = wpinv_get_option('privacy_page', 0);
     }
 
-    $privacy_link    = $privacy_page_id ? '<a href="' . esc_url( get_permalink( $privacy_page_id ) ) . '" class="wpinv-privacy-policy-link" target="_blank">' . __( 'privacy policy', 'invoicing' ) . '</a>' : __( 'privacy policy', 'invoicing' );
+    $privacy_link = $privacy_page_id ? '<a href="' . esc_url(get_permalink($privacy_page_id)) . '" class="wpinv-privacy-policy-link" target="_blank">' . __('privacy policy', 'invoicing') . '</a>' : __('privacy policy', 'invoicing');
 
     $find_replace = array(
         '[wpinv_privacy_policy]' => $privacy_link,
     );
 
-    $privacy_text = str_replace( array_keys( $find_replace ), array_values( $find_replace ), $text );
+    $privacy_text = str_replace(array_keys($find_replace), array_values($find_replace), $text);
 
     return wp_kses_post(wpautop($privacy_text));
 }
@@ -2243,25 +2243,25 @@ 
 /**
  * Allows the user to set their own price for an invoice item
  */
-function wpinv_checkout_cart_item_name_your_price( $cart_item, $key ) {
+function wpinv_checkout_cart_item_name_your_price($cart_item, $key) {
     
     //Ensure we have an item id
-    if(! is_array( $cart_item ) || empty( $cart_item['id'] ) ) {
+    if (!is_array($cart_item) || empty($cart_item['id'])) {
         return;
     }
 
     //Fetch the item
     $item_id = $cart_item['id'];
-    $item    = new WPInv_Item( $item_id );
+    $item    = new WPInv_Item($item_id);
     
-    if(! $item->supports_dynamic_pricing() || !$item->get_is_dynamic_pricing() ) {
+    if (!$item->supports_dynamic_pricing() || !$item->get_is_dynamic_pricing()) {
         return;
     }
 
     //Fetch the dynamic pricing "strings"
-    $suggested_price_text = esc_html( wpinv_get_option( 'suggested_price_text', __( 'Suggested Price:', 'invoicing' ) ) );
-    $minimum_price_text   = esc_html( wpinv_get_option( 'minimum_price_text', __( 'Minimum Price:', 'invoicing' ) ) );
-    $name_your_price_text = esc_html( wpinv_get_option( 'name_your_price_text', __( 'Name Your Price', 'invoicing' ) ) );
+    $suggested_price_text = esc_html(wpinv_get_option('suggested_price_text', __('Suggested Price:', 'invoicing')));
+    $minimum_price_text   = esc_html(wpinv_get_option('minimum_price_text', __('Minimum Price:', 'invoicing')));
+    $name_your_price_text = esc_html(wpinv_get_option('name_your_price_text', __('Name Your Price', 'invoicing')));
 
     //Display a "name_your_price" button
     echo " &mdash; <a href='#' class='wpinv-name-your-price-frontend small'>$name_your_price_text</a></div>";
@@ -2270,7 +2270,7 @@ 
     echo '<div class="name-your-price-miniform">';
     
     //Maybe display the recommended price
-    if( $item->get_price() > 0 && !empty( $suggested_price_text ) ) {
+    if ($item->get_price() > 0 && !empty($suggested_price_text)) {
         $suggested_price = $item->get_the_price();
         echo "<div>$suggested_price_text &mdash; $suggested_price</div>";
     }
@@ -2278,50 +2278,50 @@ 
     //Display the update price form
     $symbol         = wpinv_currency_symbol();
     $position       = wpinv_currency_position();
-    $minimum        = esc_attr( $item->get_minimum_price() );
-    $price          = esc_attr( $cart_item['item_price'] );
-    $update         = esc_attr__( "Update", 'invoicing' );
+    $minimum        = esc_attr($item->get_minimum_price());
+    $price          = esc_attr($cart_item['item_price']);
+    $update         = esc_attr__("Update", 'invoicing');
 
     //Ensure it supports dynamic prici
-    if( $price < $minimum ) {
+    if ($price < $minimum) {
         $price = $minimum;
     }
 
     echo '<label>';
     echo $position != 'right' ? $symbol . '&nbsp;' : '';
     echo "<input type='number' min='$minimum' placeholder='$price' value='$price' class='wpi-field-price' />";
-    echo $position == 'right' ? '&nbsp;' . $symbol : '' ;
+    echo $position == 'right' ? '&nbsp;' . $symbol : '';
     echo "</label>";
     echo "<input type='hidden' value='$item_id' class='wpi-field-item' />";
     echo "<a class='btn btn-success wpinv-submit wpinv-update-dynamic-price-frontend'>$update</a>";
 
     //Maybe display the minimum price
-    if( $item->get_minimum_price() > 0 && !empty( $minimum_price_text ) ) {
-        $minimum_price = wpinv_price( wpinv_format_amount( $item->get_minimum_price() ) );
+    if ($item->get_minimum_price() > 0 && !empty($minimum_price_text)) {
+        $minimum_price = wpinv_price(wpinv_format_amount($item->get_minimum_price()));
         echo "<div>$minimum_price_text &mdash; $minimum_price</div>";
     }
 
     echo "</div>";
 
 }
-add_action( 'wpinv_checkout_cart_item_price_after', 'wpinv_checkout_cart_item_name_your_price', 10, 2 );
+add_action('wpinv_checkout_cart_item_price_after', 'wpinv_checkout_cart_item_name_your_price', 10, 2);
 
 function wpinv_oxygen_fix_conflict() {
     global $ct_ignore_post_types;
 
-    if ( ! is_array( $ct_ignore_post_types ) ) {
+    if (!is_array($ct_ignore_post_types)) {
         $ct_ignore_post_types = array();
     }
 
-    $post_types = array( 'wpi_discount', 'wpi_invoice', 'wpi_item' );
+    $post_types = array('wpi_discount', 'wpi_invoice', 'wpi_item');
 
-    foreach ( $post_types as $post_type ) {
+    foreach ($post_types as $post_type) {
         $ct_ignore_post_types[] = $post_type;
 
         // Ignore post type
-        add_filter( 'pre_option_oxygen_vsb_ignore_post_type_' . $post_type, '__return_true', 999 );
+        add_filter('pre_option_oxygen_vsb_ignore_post_type_' . $post_type, '__return_true', 999);
     }
 
-    remove_filter( 'template_include', 'wpinv_template', 10, 1 );
-    add_filter( 'template_include', 'wpinv_template', 999, 1 );
+    remove_filter('template_include', 'wpinv_template', 10, 1);
+    add_filter('template_include', 'wpinv_template', 999, 1);
 }
\ No newline at end of file

vendor/composer/autoload_static.php

Spacing +7 added lines, -7 removed lines

@@ -6,33 +6,33 @@
 
 class ComposerStaticInit8b6d4385c391849a80038f0b0e87c8b5
 {
-    public static $files = array (
+    public static $files = array(
         'e8d544c98e79f913e13eae1306ab635e' => __DIR__ . '/..' . '/ayecode/wp-ayecode-ui/ayecode-ui-loader.php',
         '24583d3588ebda5228dd453cfaa070da' => __DIR__ . '/..' . '/ayecode/wp-font-awesome-settings/wp-font-awesome-settings.php',
     );
 
-    public static $prefixLengthsPsr4 = array (
+    public static $prefixLengthsPsr4 = array(
         'C' => 
-        array (
+        array(
             'Composer\\Installers\\' => 20,
         ),
     );
 
-    public static $prefixDirsPsr4 = array (
+    public static $prefixDirsPsr4 = array(
         'Composer\\Installers\\' => 
-        array (
+        array(
             0 => __DIR__ . '/..' . '/composer/installers/src/Composer/Installers',
         ),
     );
 
-    public static $classMap = array (
+    public static $classMap = array(
         'AyeCode_Connect_Helper' => __DIR__ . '/..' . '/ayecode/ayecode-connect-helper/ayecode-connect-helper.php',
         'WP_Super_Duper' => __DIR__ . '/..' . '/ayecode/wp-super-duper/wp-super-duper.php',
     );
 
     public static function getInitializer(ClassLoader $loader)
     {
-        return \Closure::bind(function () use ($loader) {
+        return \Closure::bind(function() use ($loader) {
             $loader->prefixLengthsPsr4 = ComposerStaticInit8b6d4385c391849a80038f0b0e87c8b5::$prefixLengthsPsr4;
             $loader->prefixDirsPsr4 = ComposerStaticInit8b6d4385c391849a80038f0b0e87c8b5::$prefixDirsPsr4;
             $loader->classMap = ComposerStaticInit8b6d4385c391849a80038f0b0e87c8b5::$classMap;

includes/data/sample-payment-form-items.php

Spacing +3 added lines, -3 removed lines

@@ -8,13 +8,13 @@ 
  * @version 1.0.19
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 return array(
 
     array(
 
-        'title'       => __( 'My Cool Item', 'invoicing' ),
+        'title'       => __('My Cool Item', 'invoicing'),
         'id'          => 'fxhnagzi',
         'price'       => '999.00',
         'recurring'   => false,
@@ -24,7 +24,7 @@ 
 
     array(
 
-        'title'       => __( 'Shipping Fee', 'invoicing' ),
+        'title'       => __('Shipping Fee', 'invoicing'),
         'id'          => 'rxnymibri',
         'price'       => '19.99',
         'recurring'   => false,

includes/data/sample-payment-form.php

Spacing +8 added lines, -8 removed lines

@@ -8,14 +8,14 @@ 
  * @version 1.0.19
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 return array(
 
     array(
 
         'level' => 'h2',
-        'text'  => __( 'Payment Form', 'invoicing' ),
+        'text'  => __('Payment Form', 'invoicing'),
         'id'    => 'uiylyczw',
         'name'  => 'uiylyczw',
         'type'  => 'heading'
@@ -23,7 +23,7 @@ 
 
     array(
 
-        'text' => __( 'Fill the form below to place an order for my cool item', 'invoicing' ),
+        'text' => __('Fill the form below to place an order for my cool item', 'invoicing'),
         'id'   => 'pcvqjj',
         'name' => 'pcvqjj',
         'type' => 'paragraph'
@@ -34,7 +34,7 @@ 
 
         'placeholder' => 'Jon',
         'value'       => '',
-        'label'       => __( 'First Name', 'invoicing' ),
+        'label'       => __('First Name', 'invoicing'),
         'description' => '',
         'required'    => false,
         'id'          => 'ynkzkjyc',
@@ -47,7 +47,7 @@ 
 
         'placeholder' => 'Snow',
         'value'       => '',
-        'label'       => __( 'Last Name', 'invoicing' ),
+        'label'       => __('Last Name', 'invoicing'),
         'description' => '',
         'required'    => false,
         'id'          => 'wfjcdmzox',
@@ -60,7 +60,7 @@ 
 
         'placeholder' => 'jon@snow.com',
         'value'       => '',
-        'label'       => __( 'Billing Email', 'invoicing' ),
+        'label'       => __('Billing Email', 'invoicing'),
         'description' => '',
         'required'    => true,
         'id'          => 'mmdwqzpox',
@@ -85,8 +85,8 @@ 
 
         'value'       =>'',
         'class'       => 'btn-primary',
-        'label'       => __( 'Pay Now »', 'invoicing' ),
-        'description' => __( 'By continuing with your payment, you are agreeing to our privacy policy and terms of service.', 'invoicing' ),
+        'label'       => __('Pay Now »', 'invoicing'),
+        'description' => __('By continuing with your payment, you are agreeing to our privacy policy and terms of service.', 'invoicing'),
         'id'          => 'rtqljyy',
         'name'        => 'rtqljyy',
         'type'        => 'pay_button',

includes/admin/admin-pages.php

Spacing +155 added lines, -155 removed lines

@@ -1,66 +1,66 @@ 
 <?php
 // 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__));
 }
 
-add_filter( 'manage_wpi_payment_form_posts_columns', 'wpinv_payment_form_columns' );
-function wpinv_payment_form_columns( $existing_columns ) {
+add_filter('manage_wpi_payment_form_posts_columns', 'wpinv_payment_form_columns');
+function wpinv_payment_form_columns($existing_columns) {
     $date = $existing_columns['date'];
-    unset( $existing_columns['date'] );
-    $existing_columns['shortcode'] = __( 'Shortcode', 'invoicing' );
+    unset($existing_columns['date']);
+    $existing_columns['shortcode'] = __('Shortcode', 'invoicing');
     $existing_columns['date'] = $date;
     return $existing_columns;
 }
 
-add_action( 'manage_wpi_payment_form_posts_custom_column', 'wpinv_payment_form_custom_column' );
-function wpinv_payment_form_custom_column( $column ) {
+add_action('manage_wpi_payment_form_posts_custom_column', 'wpinv_payment_form_custom_column');
+function wpinv_payment_form_custom_column($column) {
     global $post;
 
-    if( 'shortcode' == $column ) {
-        WPInv_Meta_Box_Payment_Form::output_shortcode( $post );
+    if ('shortcode' == $column) {
+        WPInv_Meta_Box_Payment_Form::output_shortcode($post);
     }
 
 }
 
-add_filter( 'manage_wpi_discount_posts_columns', 'wpinv_discount_columns' );
-function wpinv_discount_columns( $existing_columns ) {
+add_filter('manage_wpi_discount_posts_columns', 'wpinv_discount_columns');
+function wpinv_discount_columns($existing_columns) {
     $columns                = array();
     $columns['cb']          = $existing_columns['cb'];
-    $columns['name']        = __( 'Name', 'invoicing' );
-    $columns['code']        = __( 'Code', 'invoicing' );
-    $columns['amount']      = __( 'Amount', 'invoicing' );
-    $columns['usage']       = __( 'Usage / Limit', 'invoicing' );
-    $columns['start_date']  = __( 'Start Date', 'invoicing' );
-    $columns['expiry_date'] = __( 'Expiry Date', 'invoicing' );
-    $columns['status']      = __( 'Status', 'invoicing' );
+    $columns['name']        = __('Name', 'invoicing');
+    $columns['code']        = __('Code', 'invoicing');
+    $columns['amount']      = __('Amount', 'invoicing');
+    $columns['usage']       = __('Usage / Limit', 'invoicing');
+    $columns['start_date']  = __('Start Date', 'invoicing');
+    $columns['expiry_date'] = __('Expiry Date', 'invoicing');
+    $columns['status']      = __('Status', 'invoicing');
 
     return $columns;
 }
 
-add_action( 'manage_wpi_discount_posts_custom_column', 'wpinv_discount_custom_column' );
-function wpinv_discount_custom_column( $column ) {
+add_action('manage_wpi_discount_posts_custom_column', 'wpinv_discount_custom_column');
+function wpinv_discount_custom_column($column) {
     global $post;
 
     $discount = $post;
 
-    switch ( $column ) {
+    switch ($column) {
         case 'name' :
-            echo get_the_title( $discount->ID );
+            echo get_the_title($discount->ID);
         break;
         case 'code' :
-            echo wpinv_get_discount_code( $discount->ID );
+            echo wpinv_get_discount_code($discount->ID);
         break;
         case 'amount' :
-            echo wpinv_format_discount_rate( wpinv_get_discount_type( $discount->ID ), wpinv_get_discount_amount( $discount->ID ) );
+            echo wpinv_format_discount_rate(wpinv_get_discount_type($discount->ID), wpinv_get_discount_amount($discount->ID));
         break;
         case 'usage_limit' :
-            echo wpinv_get_discount_uses( $discount->ID );
+            echo wpinv_get_discount_uses($discount->ID);
         break;
         case 'usage' :
-            $usage = wpinv_get_discount_uses( $discount->ID ) . ' / ';
-            if ( wpinv_get_discount_max_uses( $discount->ID ) ) {
-                $usage .= wpinv_get_discount_max_uses( $discount->ID );
+            $usage = wpinv_get_discount_uses($discount->ID) . ' / ';
+            if (wpinv_get_discount_max_uses($discount->ID)) {
+                $usage .= wpinv_get_discount_max_uses($discount->ID);
             } else {
                 $usage .= ' &infin;';
             }
@@ -68,8 +68,8 @@ 
             echo $usage;
         break;
         case 'start_date' :
-            if ( $start_date = wpinv_get_discount_start_date( $discount->ID ) ) {
-                $value = date_i18n( get_option( 'date_format' ) . ' @ ' . get_option( 'time_format' ), strtotime( $start_date ) );
+            if ($start_date = wpinv_get_discount_start_date($discount->ID)) {
+                $value = date_i18n(get_option('date_format') . ' @ ' . get_option('time_format'), strtotime($start_date));
             } else {
                 $value = '-';
             }
@@ -77,163 +77,163 @@ 
             echo $value;
         break;
         case 'expiry_date' :
-            if ( $expiration = wpinv_get_discount_expiration( $discount->ID ) ) {
-                $value = date_i18n( get_option( 'date_format' ) . ' @ ' . get_option( 'time_format' ), strtotime( $expiration ) );
+            if ($expiration = wpinv_get_discount_expiration($discount->ID)) {
+                $value = date_i18n(get_option('date_format') . ' @ ' . get_option('time_format'), strtotime($expiration));
             } else {
-                $value = __( 'Never', 'invoicing' );
+                $value = __('Never', 'invoicing');
             }
                 
             echo $value;
         break;
         break;
         case 'description' :
-            echo wp_kses_post( $post->post_excerpt );
+            echo wp_kses_post($post->post_excerpt);
         break;
         case 'status' :
-            $status = wpinv_is_discount_expired( $discount->ID ) ? 'expired' : $discount->post_status;
+            $status = wpinv_is_discount_expired($discount->ID) ? 'expired' : $discount->post_status;
             
-            echo wpinv_discount_status( $status );
+            echo wpinv_discount_status($status);
         break;
     }
 }
 
-add_filter( 'post_row_actions', 'wpinv_post_row_actions', 9999, 2 );
-function wpinv_post_row_actions( $actions, $post ) {
-    $post_type = !empty( $post->post_type ) ? $post->post_type : '';
+add_filter('post_row_actions', 'wpinv_post_row_actions', 9999, 2);
+function wpinv_post_row_actions($actions, $post) {
+    $post_type = !empty($post->post_type) ? $post->post_type : '';
     
-    if ( $post_type == 'wpi_invoice' ) {
+    if ($post_type == 'wpi_invoice') {
         $actions = array();
     }
     
-    if ( $post_type == 'wpi_discount' ) {
-        $actions = wpinv_discount_row_actions( $post, $actions );
+    if ($post_type == 'wpi_discount') {
+        $actions = wpinv_discount_row_actions($post, $actions);
     }
     
     return $actions;
 }
 
-function wpinv_discount_row_actions( $discount, $row_actions ) {
-    $row_actions  = array();
-    $edit_link = get_edit_post_link( $discount->ID );
-    $row_actions['edit'] = '<a href="' . esc_url( $edit_link ) . '">' . __( 'Edit', 'invoicing' ) . '</a>';
+function wpinv_discount_row_actions($discount, $row_actions) {
+    $row_actions = array();
+    $edit_link = get_edit_post_link($discount->ID);
+    $row_actions['edit'] = '<a href="' . esc_url($edit_link) . '">' . __('Edit', 'invoicing') . '</a>';
 
-    if( in_array( strtolower( $discount->post_status ),  array(  'publish' ) ) ) {
-        $row_actions['deactivate'] = '<a href="' . esc_url( wp_nonce_url( add_query_arg( array( 'wpi_action' => 'deactivate_discount', 'discount' => $discount->ID ) ), 'wpinv_discount_nonce' ) ) . '">' . __( 'Deactivate', 'invoicing' ) . '</a>';
-    } elseif( in_array( strtolower( $discount->post_status ),  array( 'pending', 'draft' ) ) ) {
-        $row_actions['activate'] = '<a href="' . esc_url( wp_nonce_url( add_query_arg( array( 'wpi_action' => 'activate_discount', 'discount' => $discount->ID ) ), 'wpinv_discount_nonce' ) ) . '">' . __( 'Activate', 'invoicing' ) . '</a>';
+    if (in_array(strtolower($discount->post_status), array('publish'))) {
+        $row_actions['deactivate'] = '<a href="' . esc_url(wp_nonce_url(add_query_arg(array('wpi_action' => 'deactivate_discount', 'discount' => $discount->ID)), 'wpinv_discount_nonce')) . '">' . __('Deactivate', 'invoicing') . '</a>';
+    } elseif (in_array(strtolower($discount->post_status), array('pending', 'draft'))) {
+        $row_actions['activate'] = '<a href="' . esc_url(wp_nonce_url(add_query_arg(array('wpi_action' => 'activate_discount', 'discount' => $discount->ID)), 'wpinv_discount_nonce')) . '">' . __('Activate', 'invoicing') . '</a>';
     }
 
-    if ( wpinv_get_discount_uses( $discount->ID ) > 0 ) {
-        if ( isset( $row_actions['delete'] ) ) {
-            unset( $row_actions['delete'] ); // Don't delete used discounts.
+    if (wpinv_get_discount_uses($discount->ID) > 0) {
+        if (isset($row_actions['delete'])) {
+            unset($row_actions['delete']); // Don't delete used discounts.
         }
     } else {
-        $row_actions['delete'] = '<a href="' . esc_url( wp_nonce_url( add_query_arg( array( 'wpi_action' => 'delete_discount', 'discount' => $discount->ID ) ), 'wpinv_discount_nonce' ) ) . '">' . __( 'Delete', 'invoicing' ) . '</a>';
+        $row_actions['delete'] = '<a href="' . esc_url(wp_nonce_url(add_query_arg(array('wpi_action' => 'delete_discount', 'discount' => $discount->ID)), 'wpinv_discount_nonce')) . '">' . __('Delete', 'invoicing') . '</a>';
     }
     
 
-    $row_actions = apply_filters( 'wpinv_discount_row_actions', $row_actions, $discount );
+    $row_actions = apply_filters('wpinv_discount_row_actions', $row_actions, $discount);
 
     return $row_actions;
 }
 
-add_filter( 'list_table_primary_column', 'wpinv_table_primary_column', 10, 2 );
-function wpinv_table_primary_column( $default, $screen_id ) {
-    if ( 'edit-wpi_invoice' === $screen_id ) {
+add_filter('list_table_primary_column', 'wpinv_table_primary_column', 10, 2);
+function wpinv_table_primary_column($default, $screen_id) {
+    if ('edit-wpi_invoice' === $screen_id) {
         return 'name';
     }
     
     return $default;
 }
 
-function wpinv_discount_bulk_actions( $actions, $display = false ) {    
-    if ( !$display ) {
+function wpinv_discount_bulk_actions($actions, $display = false) {    
+    if (!$display) {
         return array();
     }
     
     $actions = array(
-        'activate'   => __( 'Activate', 'invoicing' ),
-        'deactivate' => __( 'Deactivate', 'invoicing' ),
-        'delete'     => __( 'Delete', 'invoicing' ),
+        'activate'   => __('Activate', 'invoicing'),
+        'deactivate' => __('Deactivate', 'invoicing'),
+        'delete'     => __('Delete', 'invoicing'),
     );
     $two = '';
     $which = 'top';
     echo '</div><div class="alignleft actions bulkactions">';
-    echo '<label for="bulk-action-selector-' . esc_attr( $which ) . '" class="screen-reader-text">' . __( 'Select bulk action' ) . '</label>';
-    echo '<select name="action' . $two . '" id="bulk-action-selector-' . esc_attr( $which ) . "\">";
-    echo '<option value="-1">' . __( 'Bulk Actions' ) . "</option>";
+    echo '<label for="bulk-action-selector-' . esc_attr($which) . '" class="screen-reader-text">' . __('Select bulk action') . '</label>';
+    echo '<select name="action' . $two . '" id="bulk-action-selector-' . esc_attr($which) . "\">";
+    echo '<option value="-1">' . __('Bulk Actions') . "</option>";
 
-    foreach ( $actions as $name => $title ) {
+    foreach ($actions as $name => $title) {
         $class = 'edit' === $name ? ' class="hide-if-no-js"' : '';
 
         echo "" . '<option value="' . $name . '"' . $class . '>' . $title . "</option>";
     }
     echo "</select>";
 
-    submit_button( __( 'Apply' ), 'action', '', false, array( 'id' => "doaction$two" ) );
+    submit_button(__('Apply'), 'action', '', false, array('id' => "doaction$two"));
     
     echo '</div><div class="alignleft actions">';
 }
-add_filter( 'bulk_actions-edit-wpi_discount', 'wpinv_discount_bulk_actions', 10 );
+add_filter('bulk_actions-edit-wpi_discount', 'wpinv_discount_bulk_actions', 10);
 
-function wpinv_disable_months_dropdown( $disable, $post_type ) {
-    if ( $post_type == 'wpi_discount' ) {
+function wpinv_disable_months_dropdown($disable, $post_type) {
+    if ($post_type == 'wpi_discount') {
         $disable = true;
     }
     
     return $disable;
 }
-add_filter( 'disable_months_dropdown', 'wpinv_disable_months_dropdown', 10, 2 );
+add_filter('disable_months_dropdown', 'wpinv_disable_months_dropdown', 10, 2);
 
 function wpinv_restrict_manage_posts() {
     global $typenow;
 
-    if( 'wpi_discount' == $typenow ) {
+    if ('wpi_discount' == $typenow) {
         wpinv_discount_filters();
     }
 }
-add_action( 'restrict_manage_posts', 'wpinv_restrict_manage_posts', 10 );
+add_action('restrict_manage_posts', 'wpinv_restrict_manage_posts', 10);
 
 function wpinv_discount_filters() {
-    echo wpinv_discount_bulk_actions( array(), true );
+    echo wpinv_discount_bulk_actions(array(), true);
     
     ?>
     <select name="discount_type" id="dropdown_wpinv_discount_type">
-        <option value=""><?php _e( 'Show all types', 'invoicing' ); ?></option>
+        <option value=""><?php _e('Show all types', 'invoicing'); ?></option>
         <?php
             $types = wpinv_get_discount_types();
 
-            foreach ( $types as $name => $type ) {
-                echo '<option value="' . esc_attr( $name ) . '"';
+            foreach ($types as $name => $type) {
+                echo '<option value="' . esc_attr($name) . '"';
 
-                if ( isset( $_GET['discount_type'] ) )
-                    selected( $name, $_GET['discount_type'] );
+                if (isset($_GET['discount_type']))
+                    selected($name, $_GET['discount_type']);
 
-                echo '>' . esc_html__( $type, 'invoicing' ) . '</option>';
+                echo '>' . esc_html__($type, 'invoicing') . '</option>';
             }
         ?>
     </select>
     <?php
 }
 
-function wpinv_request( $vars ) {
+function wpinv_request($vars) {
     global $typenow, $wp_query, $wp_post_statuses;
 
-    if ( 'wpi_invoice' === $typenow ) {
-        if ( !isset( $vars['post_status'] ) ) {
+    if ('wpi_invoice' === $typenow) {
+        if (!isset($vars['post_status'])) {
             $post_statuses = wpinv_get_invoice_statuses();
 
-            foreach ( $post_statuses as $status => $value ) {
-                if ( isset( $wp_post_statuses[ $status ] ) && false === $wp_post_statuses[ $status ]->show_in_admin_all_list ) {
-                    unset( $post_statuses[ $status ] );
+            foreach ($post_statuses as $status => $value) {
+                if (isset($wp_post_statuses[$status]) && false === $wp_post_statuses[$status]->show_in_admin_all_list) {
+                    unset($post_statuses[$status]);
                 }
             }
 
-            $vars['post_status'] = array_keys( $post_statuses );
+            $vars['post_status'] = array_keys($post_statuses);
         }
         
-        if ( isset( $vars['orderby'] ) ) {
-            if ( 'amount' == $vars['orderby'] ) {
+        if (isset($vars['orderby'])) {
+            if ('amount' == $vars['orderby']) {
                 $vars = array_merge(
                     $vars,
                     array(
@@ -241,7 +241,7 @@ 
                         'orderby'  => 'meta_value_num'
                     )
                 );
-            } else if ( 'customer' == $vars['orderby'] ) {
+            } else if ('customer' == $vars['orderby']) {
                 $vars = array_merge(
                     $vars,
                     array(
@@ -249,7 +249,7 @@ 
                         'orderby'  => 'meta_value'
                     )
                 );
-            } else if ( 'number' == $vars['orderby'] ) {
+            } else if ('number' == $vars['orderby']) {
                 $vars = array_merge(
                     $vars,
                     array(
@@ -257,7 +257,7 @@ 
                         'orderby'  => 'meta_value'
                     )
                 );
-            } else if ( 'payment_date' == $vars['orderby'] ) {
+            } else if ('payment_date' == $vars['orderby']) {
                 $vars = array_merge(
                     $vars,
                     array(
@@ -267,9 +267,9 @@ 
                 );
             }
         }
-    } else if ( 'wpi_item' == $typenow ) {
+    } else if ('wpi_item' == $typenow) {
         // Check if 'orderby' is set to "price"
-        if ( isset( $vars['orderby'] ) && 'price' == $vars['orderby'] ) {
+        if (isset($vars['orderby']) && 'price' == $vars['orderby']) {
             $vars = array_merge(
                 $vars,
                 array(
@@ -280,7 +280,7 @@ 
         }
 
         // Check if "orderby" is set to "vat_rule"
-        if ( isset( $vars['orderby'] ) && 'vat_rule' == $vars['orderby'] ) {
+        if (isset($vars['orderby']) && 'vat_rule' == $vars['orderby']) {
             $vars = array_merge(
                 $vars,
                 array(
@@ -291,7 +291,7 @@ 
         }
 
         // Check if "orderby" is set to "vat_class"
-        if ( isset( $vars['orderby'] ) && 'vat_class' == $vars['orderby'] ) {
+        if (isset($vars['orderby']) && 'vat_class' == $vars['orderby']) {
             $vars = array_merge(
                 $vars,
                 array(
@@ -302,7 +302,7 @@ 
         }
         
         // Check if "orderby" is set to "type"
-        if ( isset( $vars['orderby'] ) && 'type' == $vars['orderby'] ) {
+        if (isset($vars['orderby']) && 'type' == $vars['orderby']) {
             $vars = array_merge(
                 $vars,
                 array(
@@ -313,7 +313,7 @@ 
         }
         
         // Check if "orderby" is set to "recurring"
-        if ( isset( $vars['orderby'] ) && 'recurring' == $vars['orderby'] ) {
+        if (isset($vars['orderby']) && 'recurring' == $vars['orderby']) {
             $vars = array_merge(
                 $vars,
                 array(
@@ -323,104 +323,104 @@ 
             );
         }
 
-        $meta_query = !empty( $vars['meta_query'] ) ? $vars['meta_query'] : array();
+        $meta_query = !empty($vars['meta_query']) ? $vars['meta_query'] : array();
         // Filter vat rule type
-        if ( isset( $_GET['vat_rule'] ) && $_GET['vat_rule'] !== '' ) {
+        if (isset($_GET['vat_rule']) && $_GET['vat_rule'] !== '') {
             $meta_query[] = array(
                     'key'   => '_wpinv_vat_rule',
-                    'value' => sanitize_text_field( $_GET['vat_rule'] ),
+                    'value' => sanitize_text_field($_GET['vat_rule']),
                     'compare' => '='
                 );
         }
         
         // Filter vat class
-        if ( isset( $_GET['vat_class'] ) && $_GET['vat_class'] !== '' ) {
+        if (isset($_GET['vat_class']) && $_GET['vat_class'] !== '') {
             $meta_query[] = array(
                     'key'   => '_wpinv_vat_class',
-                    'value' => sanitize_text_field( $_GET['vat_class'] ),
+                    'value' => sanitize_text_field($_GET['vat_class']),
                     'compare' => '='
                 );
         }
         
         // Filter item type
-        if ( isset( $_GET['type'] ) && $_GET['type'] !== '' ) {
+        if (isset($_GET['type']) && $_GET['type'] !== '') {
             $meta_query[] = array(
                     'key'   => '_wpinv_type',
-                    'value' => sanitize_text_field( $_GET['type'] ),
+                    'value' => sanitize_text_field($_GET['type']),
                     'compare' => '='
                 );
         }
         
-        if ( !empty( $meta_query ) ) {
+        if (!empty($meta_query)) {
             $vars['meta_query'] = $meta_query;
         }
-    } else if ( 'wpi_discount' == $typenow ) {
-        $meta_query = !empty( $vars['meta_query'] ) ? $vars['meta_query'] : array();
+    } else if ('wpi_discount' == $typenow) {
+        $meta_query = !empty($vars['meta_query']) ? $vars['meta_query'] : array();
         // Filter vat rule type
-        if ( isset( $_GET['discount_type'] ) && $_GET['discount_type'] !== '' ) {
+        if (isset($_GET['discount_type']) && $_GET['discount_type'] !== '') {
             $meta_query[] = array(
                     'key'   => '_wpi_discount_type',
-                    'value' => sanitize_text_field( $_GET['discount_type'] ),
+                    'value' => sanitize_text_field($_GET['discount_type']),
                     'compare' => '='
                 );
         }
         
-        if ( !empty( $meta_query ) ) {
+        if (!empty($meta_query)) {
             $vars['meta_query'] = $meta_query;
         }
     }
 
     return $vars;
 }
-add_filter( 'request', 'wpinv_request' );
+add_filter('request', 'wpinv_request');
 
-function wpinv_item_type_class( $classes, $class, $post_id ) {
+function wpinv_item_type_class($classes, $class, $post_id) {
     global $pagenow, $typenow;
 
-    if ( $pagenow == 'edit.php' && $typenow == 'wpi_item' && get_post_type( $post_id ) == $typenow ) {
-        if ( $type = get_post_meta( $post_id, '_wpinv_type', true ) ) {
-            $classes[] = 'wpi-type-' . sanitize_html_class( $type );
+    if ($pagenow == 'edit.php' && $typenow == 'wpi_item' && get_post_type($post_id) == $typenow) {
+        if ($type = get_post_meta($post_id, '_wpinv_type', true)) {
+            $classes[] = 'wpi-type-' . sanitize_html_class($type);
         }
         
-        if ( !wpinv_item_is_editable( $post_id ) ) {
+        if (!wpinv_item_is_editable($post_id)) {
             $classes[] = 'wpi-editable-n';
         }
     }
     return $classes;
 }
-add_filter( 'post_class', 'wpinv_item_type_class', 10, 3 );
+add_filter('post_class', 'wpinv_item_type_class', 10, 3);
 
 function wpinv_check_quick_edit() {
     global $pagenow, $current_screen, $wpinv_item_screen;
 
-    if ( $pagenow == 'edit.php' && !empty( $current_screen->post_type ) ) {
-        if ( empty( $wpinv_item_screen ) ) {
-            if ( $current_screen->post_type == 'wpi_item' ) {
+    if ($pagenow == 'edit.php' && !empty($current_screen->post_type)) {
+        if (empty($wpinv_item_screen)) {
+            if ($current_screen->post_type == 'wpi_item') {
                 $wpinv_item_screen = 'y';
             } else {
                 $wpinv_item_screen = 'n';
             }
         }
 
-        if ( $wpinv_item_screen == 'y' && $pagenow == 'edit.php' ) {
-            add_filter( 'post_row_actions', 'wpinv_item_disable_quick_edit', 10, 2 );
-            add_filter( 'page_row_actions', 'wpinv_item_disable_quick_edit', 10, 2 );
+        if ($wpinv_item_screen == 'y' && $pagenow == 'edit.php') {
+            add_filter('post_row_actions', 'wpinv_item_disable_quick_edit', 10, 2);
+            add_filter('page_row_actions', 'wpinv_item_disable_quick_edit', 10, 2);
         }
     }
 }
-add_action( 'admin_head', 'wpinv_check_quick_edit', 10 );
+add_action('admin_head', 'wpinv_check_quick_edit', 10);
 
-function wpinv_item_disable_quick_edit( $actions = array(), $row = null ) {
-    if ( isset( $actions['inline hide-if-no-js'] ) ) {
-        unset( $actions['inline hide-if-no-js'] );
+function wpinv_item_disable_quick_edit($actions = array(), $row = null) {
+    if (isset($actions['inline hide-if-no-js'])) {
+        unset($actions['inline hide-if-no-js']);
     }
     
-    if ( !empty( $row->post_type ) && $row->post_type == 'wpi_item' && !wpinv_item_is_editable( $row ) ) {
-        if ( isset( $actions['trash'] ) ) {
-            unset( $actions['trash'] );
+    if (!empty($row->post_type) && $row->post_type == 'wpi_item' && !wpinv_item_is_editable($row)) {
+        if (isset($actions['trash'])) {
+            unset($actions['trash']);
         }
-        if ( isset( $actions['delete'] ) ) {
-            unset( $actions['delete'] );
+        if (isset($actions['delete'])) {
+            unset($actions['delete']);
         }
     }
 
@@ -437,19 +437,19 @@ 
  * @param int $post_parent (default: 0) Parent for the new page
  * @return int page ID
  */
-function wpinv_create_page( $slug, $option = '', $page_title = '', $page_content = '', $post_parent = 0 ) {
+function wpinv_create_page($slug, $option = '', $page_title = '', $page_content = '', $post_parent = 0) {
     global $wpdb;
 
-    $option_value = wpinv_get_option( $option );
+    $option_value = wpinv_get_option($option);
 
-    if ( $option_value > 0 && ( $page_object = get_post( $option_value ) ) ) {
-        if ( 'page' === $page_object->post_type && ! in_array( $page_object->post_status, array( 'pending', 'trash', 'future', 'auto-draft' ) ) ) {
+    if ($option_value > 0 && ($page_object = get_post($option_value))) {
+        if ('page' === $page_object->post_type && !in_array($page_object->post_status, array('pending', 'trash', 'future', 'auto-draft'))) {
             // Valid page is already in place
             return $page_object->ID;
         }
     }
 
-    if(!empty($post_parent)){
+    if (!empty($post_parent)) {
         $page = get_page_by_path($post_parent);
         if ($page) {
             $post_parent = $page->ID;
@@ -458,40 +458,40 @@ 
         }
     }
 
-    if ( strlen( $page_content ) > 0 ) {
+    if (strlen($page_content) > 0) {
         // Search for an existing page with the specified page content (typically a shortcode)
-        $valid_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status NOT IN ( 'pending', 'trash', 'future', 'auto-draft' ) AND post_content LIKE %s LIMIT 1;", "%{$page_content}%" ) );
+        $valid_page_found = $wpdb->get_var($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status NOT IN ( 'pending', 'trash', 'future', 'auto-draft' ) AND post_content LIKE %s LIMIT 1;", "%{$page_content}%"));
     } else {
         // Search for an existing page with the specified page slug
-        $valid_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status NOT IN ( 'pending', 'trash', 'future', 'auto-draft' )  AND post_name = %s LIMIT 1;", $slug ) );
+        $valid_page_found = $wpdb->get_var($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status NOT IN ( 'pending', 'trash', 'future', 'auto-draft' )  AND post_name = %s LIMIT 1;", $slug));
     }
 
-    $valid_page_found = apply_filters( 'wpinv_create_page_id', $valid_page_found, $slug, $page_content );
+    $valid_page_found = apply_filters('wpinv_create_page_id', $valid_page_found, $slug, $page_content);
 
-    if ( $valid_page_found ) {
-        if ( $option ) {
-            wpinv_update_option( $option, $valid_page_found );
+    if ($valid_page_found) {
+        if ($option) {
+            wpinv_update_option($option, $valid_page_found);
         }
         return $valid_page_found;
     }
 
     // Search for a matching valid trashed page
-    if ( strlen( $page_content ) > 0 ) {
+    if (strlen($page_content) > 0) {
         // Search for an existing page with the specified page content (typically a shortcode)
-        $trashed_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status = 'trash' AND post_content LIKE %s LIMIT 1;", "%{$page_content}%" ) );
+        $trashed_page_found = $wpdb->get_var($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status = 'trash' AND post_content LIKE %s LIMIT 1;", "%{$page_content}%"));
     } else {
         // Search for an existing page with the specified page slug
-        $trashed_page_found = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status = 'trash' AND post_name = %s LIMIT 1;", $slug ) );
+        $trashed_page_found = $wpdb->get_var($wpdb->prepare("SELECT ID FROM $wpdb->posts WHERE post_type='page' AND post_status = 'trash' AND post_name = %s LIMIT 1;", $slug));
     }
 
-    if ( $trashed_page_found ) {
+    if ($trashed_page_found) {
         $page_id   = $trashed_page_found;
         $page_data = array(
             'ID'             => $page_id,
             'post_status'    => 'publish',
             'post_parent'    => $post_parent,
         );
-        wp_update_post( $page_data );
+        wp_update_post($page_data);
     } else {
         $page_data = array(
             'post_status'    => 'publish',
@@ -503,11 +503,11 @@ 
             'post_parent'    => $post_parent,
             'comment_status' => 'closed',
         );
-        $page_id = wp_insert_post( $page_data );
+        $page_id = wp_insert_post($page_data);
     }
 
-    if ( $option ) {
-        wpinv_update_option( $option, (int)$page_id );
+    if ($option) {
+        wpinv_update_option($option, (int) $page_id);
     }
 
     return $page_id;

widgets/payment-form.php

Indentation +70 added lines, -70 removed lines

@@ -16,23 +16,23 @@ 
      */
     public function __construct() {
 
-		$forms = get_posts(
-			array(
-				'post_type'      => 'wpi_payment_form',
-				'orderby'        => 'title',
-				'order'          => 'ASC',
-				'posts_per_page' => -1,
-				'post_status'    => array( 'publish' ),
-			)
-		);
-
-		$options = array(
-			'' => __('Select a Form','invoicing')
-		);
-
-		foreach( $forms as $form ) {
-			$options[ $form->ID ] = $form->post_title;
-		}
+        $forms = get_posts(
+            array(
+                'post_type'      => 'wpi_payment_form',
+                'orderby'        => 'title',
+                'order'          => 'ASC',
+                'posts_per_page' => -1,
+                'post_status'    => array( 'publish' ),
+            )
+        );
+
+        $options = array(
+            '' => __('Select a Form','invoicing')
+        );
+
+        foreach( $forms as $form ) {
+            $options[ $form->ID ] = $form->post_title;
+        }
 
         $options = array(
             'textdomain'    => 'invoicing',
@@ -50,8 +50,8 @@ 
                 'form'            => array(
                     'title'       => __( 'Payment Form', 'invoicing' ),
                     'desc'        => __( 'Select your payment form.', 'invoicing' ),
-					'type'        => 'select',
-					'options'     =>  $options,
+                    'type'        => 'select',
+                    'options'     =>  $options,
                     'desc_tip'    => true,
                     'default'     => '',
                     'advanced'    => false
@@ -64,59 +64,59 @@ 
         parent::__construct( $options );
     }
 
-	/**
-	 * The Super block output function.
-	 *
-	 * @param array $args
-	 * @param array $widget_args
-	 * @param string $content
-	 *
-	 * @return string
-	 */
+    /**
+     * The Super block output function.
+     *
+     * @param array $args
+     * @param array $widget_args
+     * @param string $content
+     *
+     * @return string
+     */
     public function output( $args = array(), $widget_args = array(), $content = '' ) {
-		global $invoicing;
-
-		// Do we have a payment form?
-		if ( empty( $args['form'] ) ) {
-			return aui()->alert(
-				array(
-					'type'    => 'warning',
-					'content' => __( 'No payment form selected', 'invoicing' ),
-				)
-			);
-
-		}
-
-		// If yes, ensure that it is published.
-		if ( 'publish' != get_post_status( $args['form'] ) ) {
-			return aui()->alert(
-				array(
-					'type'    => 'warning',
-					'content' => __( 'This payment form is no longer active', 'invoicing' ),
-				)
-			);
-		}
-
-		// Get the form elements and items.
-		$elements = $invoicing->form_elements->get_form_elements( $args['form'] );
-		$items    = $invoicing->form_elements->get_form_items( $args['form'] );
-
-		ob_start();
-		echo "<form class='wpinv_payment_form'>";
-		echo "<input type='hidden' name='form_id' value='{$args['form']}'/>";
-		wp_nonce_field( 'wpinv_payment_form', 'wpinv_payment_form' );
-
-		foreach ( $elements as $element ) {
-			do_action( 'wpinv_frontend_render_payment_form_element', $element, $items, $args['form'] );
-			do_action( "wpinv_frontend_render_payment_form_{$element['type']}", $element, $items, $args['form'] );
-		}
-
-		echo "<div class='wpinv_payment_form_errors alert alert-danger d-none'></div>";
-		echo '</form>';
-
-		$content = ob_get_clean();
+        global $invoicing;
+
+        // Do we have a payment form?
+        if ( empty( $args['form'] ) ) {
+            return aui()->alert(
+                array(
+                    'type'    => 'warning',
+                    'content' => __( 'No payment form selected', 'invoicing' ),
+                )
+            );
+
+        }
+
+        // If yes, ensure that it is published.
+        if ( 'publish' != get_post_status( $args['form'] ) ) {
+            return aui()->alert(
+                array(
+                    'type'    => 'warning',
+                    'content' => __( 'This payment form is no longer active', 'invoicing' ),
+                )
+            );
+        }
+
+        // Get the form elements and items.
+        $elements = $invoicing->form_elements->get_form_elements( $args['form'] );
+        $items    = $invoicing->form_elements->get_form_items( $args['form'] );
+
+        ob_start();
+        echo "<form class='wpinv_payment_form'>";
+        echo "<input type='hidden' name='form_id' value='{$args['form']}'/>";
+        wp_nonce_field( 'wpinv_payment_form', 'wpinv_payment_form' );
+
+        foreach ( $elements as $element ) {
+            do_action( 'wpinv_frontend_render_payment_form_element', $element, $items, $args['form'] );
+            do_action( "wpinv_frontend_render_payment_form_{$element['type']}", $element, $items, $args['form'] );
+        }
+
+        echo "<div class='wpinv_payment_form_errors alert alert-danger d-none'></div>";
+        echo '</form>';
+
+        $content = ob_get_clean();
 		
-		return str_replace( 'sr-only', '', $content );
+        return str_replace( 'sr-only', '', $content );
 
     }
 

Spacing +22 added lines, -22 removed lines

@@ -1,6 +1,6 @@ 
 <?php
 
-if ( ! defined( 'ABSPATH' ) ) {
+if (!defined('ABSPATH')) {
     exit; // Exit if accessed directly
 }
 
@@ -22,16 +22,16 @@ 
 				'orderby'        => 'title',
 				'order'          => 'ASC',
 				'posts_per_page' => -1,
-				'post_status'    => array( 'publish' ),
+				'post_status'    => array('publish'),
 			)
 		);
 
 		$options = array(
-			'' => __('Select a Form','invoicing')
+			'' => __('Select a Form', 'invoicing')
 		);
 
-		foreach( $forms as $form ) {
-			$options[ $form->ID ] = $form->post_title;
+		foreach ($forms as $form) {
+			$options[$form->ID] = $form->post_title;
 		}
 
         $options = array(
@@ -41,15 +41,15 @@ 
             'block-keywords'=> "['invoicing','buy', 'buy item', 'pay', 'payment form']",
             'class_name'     => __CLASS__,
             'base_id'       => 'wpinv_payment_form',
-            'name'          => __('Invoicing > Payment Form','invoicing'),
+            'name'          => __('Invoicing > Payment Form', 'invoicing'),
             'widget_ops'    => array(
                 'classname'   => 'wpinv-payment-form-class bsui',
-                'description' => esc_html__('Displays a payment form.','invoicing'),
+                'description' => esc_html__('Displays a payment form.', 'invoicing'),
             ),
             'arguments'           => array(
                 'form'            => array(
-                    'title'       => __( 'Payment Form', 'invoicing' ),
-                    'desc'        => __( 'Select your payment form.', 'invoicing' ),
+                    'title'       => __('Payment Form', 'invoicing'),
+                    'desc'        => __('Select your payment form.', 'invoicing'),
 					'type'        => 'select',
 					'options'     =>  $options,
                     'desc_tip'    => true,
@@ -61,7 +61,7 @@ 
         );
 
 
-        parent::__construct( $options );
+        parent::__construct($options);
     }
 
 	/**
@@ -73,42 +73,42 @@ 
 	 *
 	 * @return string
 	 */
-    public function output( $args = array(), $widget_args = array(), $content = '' ) {
+    public function output($args = array(), $widget_args = array(), $content = '') {
 		global $invoicing;
 
 		// Do we have a payment form?
-		if ( empty( $args['form'] ) ) {
+		if (empty($args['form'])) {
 			return aui()->alert(
 				array(
 					'type'    => 'warning',
-					'content' => __( 'No payment form selected', 'invoicing' ),
+					'content' => __('No payment form selected', 'invoicing'),
 				)
 			);
 
 		}
 
 		// If yes, ensure that it is published.
-		if ( 'publish' != get_post_status( $args['form'] ) ) {
+		if ('publish' != get_post_status($args['form'])) {
 			return aui()->alert(
 				array(
 					'type'    => 'warning',
-					'content' => __( 'This payment form is no longer active', 'invoicing' ),
+					'content' => __('This payment form is no longer active', 'invoicing'),
 				)
 			);
 		}
 
 		// Get the form elements and items.
-		$elements = $invoicing->form_elements->get_form_elements( $args['form'] );
-		$items    = $invoicing->form_elements->get_form_items( $args['form'] );
+		$elements = $invoicing->form_elements->get_form_elements($args['form']);
+		$items    = $invoicing->form_elements->get_form_items($args['form']);
 
 		ob_start();
 		echo "<form class='wpinv_payment_form'>";
 		echo "<input type='hidden' name='form_id' value='{$args['form']}'/>";
-		wp_nonce_field( 'wpinv_payment_form', 'wpinv_payment_form' );
+		wp_nonce_field('wpinv_payment_form', 'wpinv_payment_form');
 
-		foreach ( $elements as $element ) {
-			do_action( 'wpinv_frontend_render_payment_form_element', $element, $items, $args['form'] );
-			do_action( "wpinv_frontend_render_payment_form_{$element['type']}", $element, $items, $args['form'] );
+		foreach ($elements as $element) {
+			do_action('wpinv_frontend_render_payment_form_element', $element, $items, $args['form']);
+			do_action("wpinv_frontend_render_payment_form_{$element['type']}", $element, $items, $args['form']);
 		}
 
 		echo "<div class='wpinv_payment_form_errors alert alert-danger d-none'></div>";
@@ -116,7 +116,7 @@ 
 
 		$content = ob_get_clean();
 		
-		return str_replace( 'sr-only', '', $content );
+		return str_replace('sr-only', '', $content);
 
     }
 

includes/wpinv-user-functions.php

Indentation +20 added lines, -20 removed lines

@@ -159,11 +159,11 @@ 
  */
 function wpinv_get_capability( $capalibilty = 'manage_invoicing' ) {
 
-	if ( current_user_can( 'manage_options' ) ) {
-		return 'manage_options';
-	};
+    if ( current_user_can( 'manage_options' ) ) {
+        return 'manage_options';
+    };
 
-	return $capalibilty;
+    return $capalibilty;
 }
 
 /**
@@ -185,11 +185,11 @@ 
 function wpinv_create_user( $email ) {
 
     // Prepare user values.
-	$args = array(
-		'user_login' => wpinv_generate_user_name( $email ),
-		'user_pass'  => wp_generate_password(),
-		'user_email' => $email,
-		'role'       => 'subscriber',
+    $args = array(
+        'user_login' => wpinv_generate_user_name( $email ),
+        'user_pass'  => wp_generate_password(),
+        'user_email' => $email,
+        'role'       => 'subscriber',
     );
         
     return wp_insert_user( $args );
@@ -205,19 +205,19 @@ 
 function wpinv_generate_user_name( $prefix = '' ) {
 
     // If prefix is an email, retrieve the part before the email.
-	$prefix = strtok( $prefix, '@' );
+    $prefix = strtok( $prefix, '@' );
 
-	// Trim to 4 characters max.
-	$prefix = sanitize_user( substr( $prefix, 0, 4 ) );
+    // Trim to 4 characters max.
+    $prefix = sanitize_user( substr( $prefix, 0, 4 ) );
 
-	$illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
-	if ( empty( $prefix ) || in_array( strtolower( $prefix ), array_map( 'strtolower', $illegal_logins ), true ) ) {
-		$prefix = 'paywp';
-	}
+    $illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
+    if ( empty( $prefix ) || in_array( strtolower( $prefix ), array_map( 'strtolower', $illegal_logins ), true ) ) {
+        $prefix = 'paywp';
+    }
 
-	$username = $prefix . '_' . zeroise( wp_rand( 0, 9999 ), 4 );
-	if ( username_exists( $username ) ) {
-		return wpinv_generate_user_name( $prefix );
-	}
+    $username = $prefix . '_' . zeroise( wp_rand( 0, 9999 ), 4 );
+    if ( username_exists( $username ) ) {
+        return wpinv_generate_user_name( $prefix );
+    }
 
 }

Spacing +67 added lines, -67 removed lines

@@ -1,22 +1,22 @@ 
 <?php
 // Exit if accessed directly
-if ( ! defined( 'ABSPATH' ) ) exit;
+if (!defined('ABSPATH')) exit;
 
-function wpinv_get_users_invoices( $user = 0, $number = 20, $pagination = false, $status = 'publish', $orderby = 'ID', $order = 'DESC' ) {
-    if ( empty( $user ) ) {
+function wpinv_get_users_invoices($user = 0, $number = 20, $pagination = false, $status = 'publish', $orderby = 'ID', $order = 'DESC') {
+    if (empty($user)) {
         $user = get_current_user_id();
     }
 
-    if ( empty( $user ) ) {
+    if (empty($user)) {
         return false;
     }
 
-    $args = apply_filters( 'wpinv_get_users_invoices_args', array( 'user' => $user, 'limit' => $number, 'status' => $status, 'paginate' => $pagination, 'orderby' => $orderby, 'order' => $order ) );
+    $args = apply_filters('wpinv_get_users_invoices_args', array('user' => $user, 'limit' => $number, 'status' => $status, 'paginate' => $pagination, 'orderby' => $orderby, 'order' => $order));
     
-    return wpinv_get_invoices( $args );
+    return wpinv_get_invoices($args);
 }
 
-function wpinv_dropdown_users( $args = '' ) {
+function wpinv_dropdown_users($args = '') {
     $defaults = array(
         'show_option_all' => '', 'show_option_none' => '', 'hide_if_only_one_author' => '',
         'orderby' => 'display_name', 'order' => 'ASC',
@@ -27,18 +27,18 @@ 
         'option_none_value' => -1
     );
 
-    $defaults['selected'] = is_author() ? get_query_var( 'author' ) : 0;
+    $defaults['selected'] = is_author() ? get_query_var('author') : 0;
 
-    $r = wp_parse_args( $args, $defaults );
+    $r = wp_parse_args($args, $defaults);
 
-    $query_args = wp_array_slice_assoc( $r, array( 'blog_id', 'include', 'exclude', 'orderby', 'order', 'who' ) );
+    $query_args = wp_array_slice_assoc($r, array('blog_id', 'include', 'exclude', 'orderby', 'order', 'who'));
 
-    $fields = array( 'ID', 'user_login', 'user_email' );
+    $fields = array('ID', 'user_login', 'user_email');
 
-    $show = ! empty( $r['show'] ) ? $r['show'] : 'display_name';
-    if ( 'display_name_with_login' === $show ) {
+    $show = !empty($r['show']) ? $r['show'] : 'display_name';
+    if ('display_name_with_login' === $show) {
         $fields[] = 'display_name';
-    } else if ( 'display_name_with_email' === $show ) {
+    } else if ('display_name_with_email' === $show) {
         $fields[] = 'display_name';
     } else {
         $fields[] = $show;
@@ -50,99 +50,99 @@ 
     $show_option_none = $r['show_option_none'];
     $option_none_value = $r['option_none_value'];
 
-    $query_args = apply_filters( 'wpinv_dropdown_users_args', $query_args, $r );
+    $query_args = apply_filters('wpinv_dropdown_users_args', $query_args, $r);
 
-    $users = get_users( $query_args );
+    $users = get_users($query_args);
 
     $output = '';
-    if ( ! empty( $users ) && ( empty( $r['hide_if_only_one_author'] ) || count( $users ) > 1 ) ) {
-        $name = esc_attr( $r['name'] );
-        if ( $r['multi'] && ! $r['id'] ) {
+    if (!empty($users) && (empty($r['hide_if_only_one_author']) || count($users) > 1)) {
+        $name = esc_attr($r['name']);
+        if ($r['multi'] && !$r['id']) {
             $id = '';
         } else {
-            $id = $r['id'] ? " id='" . esc_attr( $r['id'] ) . "'" : " id='$name'";
+            $id = $r['id'] ? " id='" . esc_attr($r['id']) . "'" : " id='$name'";
         }
         $output = "<select name='{$name}'{$id} class='" . $r['class'] . "'>\n";
 
-        if ( $show_option_all ) {
+        if ($show_option_all) {
             $output .= "\t<option value='0'>$show_option_all</option>\n";
         }
 
-        if ( $show_option_none ) {
-            $_selected = selected( $option_none_value, $r['selected'], false );
-            $output .= "\t<option value='" . esc_attr( $option_none_value ) . "'$_selected>$show_option_none</option>\n";
+        if ($show_option_none) {
+            $_selected = selected($option_none_value, $r['selected'], false);
+            $output .= "\t<option value='" . esc_attr($option_none_value) . "'$_selected>$show_option_none</option>\n";
         }
 
-        if ( $r['include_selected'] && ( $r['selected'] > 0 ) ) {
+        if ($r['include_selected'] && ($r['selected'] > 0)) {
             $found_selected = false;
             $r['selected'] = (int) $r['selected'];
-            foreach ( (array) $users as $user ) {
+            foreach ((array) $users as $user) {
                 $user->ID = (int) $user->ID;
-                if ( $user->ID === $r['selected'] ) {
+                if ($user->ID === $r['selected']) {
                     $found_selected = true;
                 }
             }
 
-            if ( ! $found_selected ) {
-                $users[] = get_userdata( $r['selected'] );
+            if (!$found_selected) {
+                $users[] = get_userdata($r['selected']);
             }
         }
 
-        foreach ( (array) $users as $user ) {
-            if ( 'display_name_with_login' === $show ) {
+        foreach ((array) $users as $user) {
+            if ('display_name_with_login' === $show) {
                 /* translators: 1: display name, 2: user_login */
-                $display = sprintf( _x( '%1$s (%2$s)', 'user dropdown' ), $user->display_name, $user->user_login );
-            } elseif ( 'display_name_with_email' === $show ) {
+                $display = sprintf(_x('%1$s (%2$s)', 'user dropdown'), $user->display_name, $user->user_login);
+            } elseif ('display_name_with_email' === $show) {
                 /* translators: 1: display name, 2: user_email */
-                if ( $user->display_name == $user->user_email ) {
+                if ($user->display_name == $user->user_email) {
                     $display = $user->display_name;
                 } else {
-                    $display = sprintf( _x( '%1$s (%2$s)', 'user dropdown' ), $user->display_name, $user->user_email );
+                    $display = sprintf(_x('%1$s (%2$s)', 'user dropdown'), $user->display_name, $user->user_email);
                 }
-            } elseif ( ! empty( $user->$show ) ) {
+            } elseif (!empty($user->$show)) {
                 $display = $user->$show;
             } else {
                 $display = '(' . $user->user_login . ')';
             }
 
-            $_selected = selected( $user->ID, $r['selected'], false );
-            $output .= "\t<option value='$user->ID'$_selected>" . esc_html( $display ) . "</option>\n";
+            $_selected = selected($user->ID, $r['selected'], false);
+            $output .= "\t<option value='$user->ID'$_selected>" . esc_html($display) . "</option>\n";
         }
 
         $output .= "</select>";
     }
 
-    $html = apply_filters( 'wpinv_dropdown_users', $output );
+    $html = apply_filters('wpinv_dropdown_users', $output);
 
-    if ( $r['echo'] ) {
+    if ($r['echo']) {
         echo $html;
     }
     return $html;
 }
 
-function wpinv_guest_redirect( $redirect_to, $user_id = 0 ) {
-    if ( (int)wpinv_get_option( 'guest_checkout' ) && $user_id > 0 ) {
-        wpinv_login_user( $user_id );
+function wpinv_guest_redirect($redirect_to, $user_id = 0) {
+    if ((int) wpinv_get_option('guest_checkout') && $user_id > 0) {
+        wpinv_login_user($user_id);
     } else {
-        $redirect_to = wp_login_url( $redirect_to );
+        $redirect_to = wp_login_url($redirect_to);
     }
     
-    $redirect_to = apply_filters( 'wpinv_invoice_link_guest_redirect', $redirect_to, $user_id );
+    $redirect_to = apply_filters('wpinv_invoice_link_guest_redirect', $redirect_to, $user_id);
     
-    wp_redirect( $redirect_to );
+    wp_redirect($redirect_to);
 }
 
-function wpinv_login_user( $user_id ) {
-    if ( is_user_logged_in() ) {
+function wpinv_login_user($user_id) {
+    if (is_user_logged_in()) {
         return true;
     }
     
-    $user = get_user_by( 'id', $user_id );
+    $user = get_user_by('id', $user_id);
     
-    if ( !empty( $user ) && !is_wp_error( $user ) && !empty( $user->user_login ) ) {
-        wp_set_current_user( $user_id, $user->user_login );
-        wp_set_auth_cookie( $user_id );
-        do_action( 'wp_login', $user->user_login );
+    if (!empty($user) && !is_wp_error($user) && !empty($user->user_login)) {
+        wp_set_current_user($user_id, $user->user_login);
+        wp_set_auth_cookie($user_id);
+        do_action('wp_login', $user->user_login);
         
         return true;
     }
@@ -157,9 +157,9 @@ 
  * @return string capability to check against
  * @param string $capalibilty Optional. The alternative capability to check against.
  */
-function wpinv_get_capability( $capalibilty = 'manage_invoicing' ) {
+function wpinv_get_capability($capalibilty = 'manage_invoicing') {
 
-	if ( current_user_can( 'manage_options' ) ) {
+	if (current_user_can('manage_options')) {
 		return 'manage_options';
 	};
 
@@ -173,7 +173,7 @@ 
  * @return bool
  */
 function wpinv_current_user_can_manage_invoicing() {
-    return current_user_can( wpinv_get_capability() );
+    return current_user_can(wpinv_get_capability());
 }
 
 /**
@@ -182,17 +182,17 @@ 
  * @since 1.0.19
  * @return int|WP_Error
  */
-function wpinv_create_user( $email ) {
+function wpinv_create_user($email) {
 
     // Prepare user values.
 	$args = array(
-		'user_login' => wpinv_generate_user_name( $email ),
+		'user_login' => wpinv_generate_user_name($email),
 		'user_pass'  => wp_generate_password(),
 		'user_email' => $email,
 		'role'       => 'subscriber',
     );
         
-    return wp_insert_user( $args );
+    return wp_insert_user($args);
 
 }
 
@@ -202,22 +202,22 @@ 
  * @since 1.0.19
  * @return bool|WP_User
  */
-function wpinv_generate_user_name( $prefix = '' ) {
+function wpinv_generate_user_name($prefix = '') {
 
     // If prefix is an email, retrieve the part before the email.
-	$prefix = strtok( $prefix, '@' );
+	$prefix = strtok($prefix, '@');
 
 	// Trim to 4 characters max.
-	$prefix = sanitize_user( substr( $prefix, 0, 4 ) );
+	$prefix = sanitize_user(substr($prefix, 0, 4));
 
-	$illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );
-	if ( empty( $prefix ) || in_array( strtolower( $prefix ), array_map( 'strtolower', $illegal_logins ), true ) ) {
+	$illegal_logins = (array) apply_filters('illegal_user_logins', array());
+	if (empty($prefix) || in_array(strtolower($prefix), array_map('strtolower', $illegal_logins), true)) {
 		$prefix = 'paywp';
 	}
 
-	$username = $prefix . '_' . zeroise( wp_rand( 0, 9999 ), 4 );
-	if ( username_exists( $username ) ) {
-		return wpinv_generate_user_name( $prefix );
+	$username = $prefix . '_' . zeroise(wp_rand(0, 9999), 4);
+	if (username_exists($username)) {
+		return wpinv_generate_user_name($prefix);
 	}
 
 }

includes/class-wpinv.php

Indentation +16 added lines, -16 removed lines

@@ -171,11 +171,11 @@ 
         require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-privacy.php' );
         require_once( WPINV_PLUGIN_DIR . 'includes/libraries/class-ayecode-addons.php' );
         require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-addons.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/checkout.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-history.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-receipt.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-messages.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/subscriptions.php' );
+        require_once( WPINV_PLUGIN_DIR . 'widgets/checkout.php' );
+        require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-history.php' );
+        require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-receipt.php' );
+        require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-messages.php' );
+        require_once( WPINV_PLUGIN_DIR . 'widgets/subscriptions.php' );
         require_once( WPINV_PLUGIN_DIR . 'widgets/buy-item.php' );
         require_once( WPINV_PLUGIN_DIR . 'widgets/payment-form.php' );
         require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-payment-form-elements.php' );
@@ -491,19 +491,19 @@ 
         require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-bp-core.php' );
     }
 
-	/**
-	 * Register widgets
-	 *
-	 */
-	public function register_widgets() {
-		register_widget( "WPInv_Checkout_Widget" );
-		register_widget( "WPInv_History_Widget" );
-		register_widget( "WPInv_Receipt_Widget" );
-		register_widget( "WPInv_Subscriptions_Widget" );
-		register_widget( "WPInv_Buy_Item_Widget" );
+    /**
+     * Register widgets
+     *
+     */
+    public function register_widgets() {
+        register_widget( "WPInv_Checkout_Widget" );
+        register_widget( "WPInv_History_Widget" );
+        register_widget( "WPInv_Receipt_Widget" );
+        register_widget( "WPInv_Subscriptions_Widget" );
+        register_widget( "WPInv_Buy_Item_Widget" );
         register_widget( "WPInv_Messages_Widget" );
         register_widget( 'WPInv_Payment_Form_Widget' );
-	}
+    }
     
     /**
      * Remove our pages from yoast sitemaps.

Spacing +244 added lines, -244 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();
@@ -33,34 +33,34 @@ 
     }
     
     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( &$this, 'wpinv_actions' ) );
+        add_action('admin_init', array(&$this, 'admin_init'));
+        add_action('init', array(&$this, 'init'), 3);
+        add_action('init', array(&$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( &$this, 'enqueue_scripts' ) );
-        add_action( 'widgets_init', array( &$this, 'register_widgets' ) );
-        add_filter( 'wpseo_exclude_from_sitemap_by_post_ids', array( $this, 'wpseo_exclude_from_sitemap_by_post_ids' ) );
+        add_action('wp_enqueue_scripts', array(&$this, 'enqueue_scripts'));
+        add_action('widgets_init', array(&$this, 'register_widgets'));
+        add_filter('wpseo_exclude_from_sitemap_by_post_ids', array($this, 'wpseo_exclude_from_sitemap_by_post_ids'));
 
-        if ( is_admin() ) {
-            add_action( 'admin_enqueue_scripts', array( &$this, 'admin_enqueue_scripts' ) );
-            add_filter( 'admin_body_class', array( &$this, 'admin_body_class' ) );
-            add_action( 'admin_init', array( &$this, 'init_ayecode_connect_helper' ) );
+        if (is_admin()) {
+            add_action('admin_enqueue_scripts', array(&$this, 'admin_enqueue_scripts'));
+            add_filter('admin_body_class', array(&$this, 'admin_body_class'));
+            add_action('admin_init', array(&$this, 'init_ayecode_connect_helper'));
 
         } else {
-            add_filter( 'pre_get_posts', array( &$this, 'pre_get_posts' ) );
+            add_filter('pre_get_posts', array(&$this, 'pre_get_posts'));
         }
         
         /**
@@ -70,28 +70,28 @@ 
          *
          * @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'));
     }
 
     /**
      * Maybe show the AyeCode Connect Notice.
      */
-    public function init_ayecode_connect_helper(){
+    public function init_ayecode_connect_helper() {
         // AyeCode Connect notice
-        if ( is_admin() ){
+        if (is_admin()) {
             // set the strings so they can be translated
             $strings = array(
-                'connect_title' => __("WP Invoicing - an AyeCode product!","invoicing"),
-                'connect_external'  => __( "Please confirm you wish to connect your site?","invoicing" ),
-                'connect'           => sprintf( __( "<strong>Have a license?</strong> Forget about entering license keys or downloading zip files, connect your site for instant access. %slearn more%s","invoicing" ),"<a href='https://ayecode.io/introducing-ayecode-connect/' target='_blank'>","</a>" ),
-                'connect_button'    => __("Connect Site","invoicing"),
-                'connecting_button'    => __("Connecting...","invoicing"),
-                'error_localhost'   => __( "This service will only work with a live domain, not a localhost.","invoicing" ),
-                'error'             => __( "Something went wrong, please refresh and try again.","invoicing" ),
+                'connect_title' => __("WP Invoicing - an AyeCode product!", "invoicing"),
+                'connect_external'  => __("Please confirm you wish to connect your site?", "invoicing"),
+                'connect'           => sprintf(__("<strong>Have a license?</strong> Forget about entering license keys or downloading zip files, connect your site for instant access. %slearn more%s", "invoicing"), "<a href='https://ayecode.io/introducing-ayecode-connect/' target='_blank'>", "</a>"),
+                'connect_button'    => __("Connect Site", "invoicing"),
+                'connecting_button'    => __("Connecting...", "invoicing"),
+                'error_localhost'   => __("This service will only work with a live domain, not a localhost.", "invoicing"),
+                'error'             => __("Something went wrong, please refresh and try again.", "invoicing"),
             );
-            new AyeCode_Connect_Helper($strings,array('wpi-addons'));
+            new AyeCode_Connect_Helper($strings, array('wpi-addons'));
         }
     }
     
@@ -99,10 +99,10 @@ 
         /* Internationalize the text strings used. */
         $this->load_textdomain();
 
-        do_action( 'wpinv_loaded' );
+        do_action('wpinv_loaded');
 
         // Fix oxygen page builder conflict
-        if ( function_exists( 'ct_css_output' ) ) {
+        if (function_exists('ct_css_output')) {
             wpinv_oxygen_fix_conflict();
         }
     }
@@ -112,237 +112,237 @@ 
      *
      * @since 1.0
      */
-    public function load_textdomain( $locale = NULL ) {
-        if ( empty( $locale ) ) {
-            $locale = is_admin() && function_exists( 'get_user_locale' ) ? get_user_locale() : get_locale();
+    public function load_textdomain($locale = NULL) {
+        if (empty($locale)) {
+            $locale = is_admin() && function_exists('get_user_locale') ? get_user_locale() : get_locale();
         }
 
-        $locale = apply_filters( 'plugin_locale', $locale, 'invoicing' );
+        $locale = apply_filters('plugin_locale', $locale, 'invoicing');
         
-        unload_textdomain( 'invoicing' );
-        load_textdomain( 'invoicing', WP_LANG_DIR . '/invoicing/invoicing-' . $locale . '.mo' );
-        load_plugin_textdomain( 'invoicing', false, WPINV_PLUGIN_DIR . 'languages' );
+        unload_textdomain('invoicing');
+        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 . 'vendor/autoload.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/libraries/action-scheduler/action-scheduler.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/class-wpinv-invoice.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-discount.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/abstracts/abstract-wpinv-session.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-session-handler.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-cache-helper.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-db.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/admin/subscriptions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscriptions-db.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscriptions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/wpinv-subscription.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-subscriptions-list-table.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/abstracts/abstract-wpinv-privacy.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-privacy.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/libraries/class-ayecode-addons.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-addons.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/checkout.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-history.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-receipt.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/invoice-messages.php' );
-	    require_once( WPINV_PLUGIN_DIR . 'widgets/subscriptions.php' );
-        require_once( WPINV_PLUGIN_DIR . 'widgets/buy-item.php' );
-        require_once( WPINV_PLUGIN_DIR . 'widgets/payment-form.php' );
-        require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-payment-form-elements.php' );
-
-        if ( !class_exists( 'WPInv_EUVat' ) ) {
-            require_once( WPINV_PLUGIN_DIR . 'includes/libraries/wpinv-euvat/class-wpinv-euvat.php' );
+        require_once(WPINV_PLUGIN_DIR . 'vendor/autoload.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/libraries/action-scheduler/action-scheduler.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/class-wpinv-invoice.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-discount.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/abstracts/abstract-wpinv-session.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-session-handler.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-cache-helper.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-db.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/admin/subscriptions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscriptions-db.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-subscriptions.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/wpinv-subscription.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-subscriptions-list-table.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/abstracts/abstract-wpinv-privacy.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-privacy.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/libraries/class-ayecode-addons.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-addons.php');
+	    require_once(WPINV_PLUGIN_DIR . 'widgets/checkout.php');
+	    require_once(WPINV_PLUGIN_DIR . 'widgets/invoice-history.php');
+	    require_once(WPINV_PLUGIN_DIR . 'widgets/invoice-receipt.php');
+	    require_once(WPINV_PLUGIN_DIR . 'widgets/invoice-messages.php');
+	    require_once(WPINV_PLUGIN_DIR . 'widgets/subscriptions.php');
+        require_once(WPINV_PLUGIN_DIR . 'widgets/buy-item.php');
+        require_once(WPINV_PLUGIN_DIR . 'widgets/payment-form.php');
+        require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-payment-form-elements.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-payment-form.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/class-wpinv-admin-menus.php' );
-            require_once( WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-users.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-payment-form.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/class-wpinv-admin-menus.php');
+            require_once(WPINV_PLUGIN_DIR . 'includes/admin/class-wpinv-users.php');
             //require_once( WPINV_PLUGIN_DIR . 'includes/admin/subscriptions.php' );
             // load the user class only on the users.php page
             global $pagenow;
-            if($pagenow=='users.php'){
+            if ($pagenow == 'users.php') {
                 new WPInv_Admin_Users();
             }
         }
 
         // Register cli commands
-        if ( defined( 'WP_CLI' ) && WP_CLI ) {
-            require_once( WPINV_PLUGIN_DIR . 'includes/class-wpinv-cli.php' );
-            WP_CLI::add_command( 'invoicing', 'WPInv_CLI' );
+        if (defined('WP_CLI') && WP_CLI) {
+            require_once(WPINV_PLUGIN_DIR . 'includes/class-wpinv-cli.php');
+            WP_CLI::add_command('invoicing', 'WPInv_CLI');
         }
         
         // 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() {
-        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_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.js', array( 'jquery' ),  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.js', array('jquery'), 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['txtComplete']          = __( 'Complete', 'invoicing' );
+        $localize['txtComplete']          = __('Complete', 'invoicing');
         $localize['UseTaxes']             = wpinv_use_taxes();
-        $localize['checkoutNonce']        = wp_create_nonce( 'wpinv_checkout_nonce' );
+        $localize['checkoutNonce']        = wp_create_nonce('wpinv_checkout_nonce');
 
-        $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_style( "select2", WPINV_PLUGIN_URL . 'assets/css/select2/select2.css', array(), WPINV_VERSION, 'all' );
-        wp_enqueue_script('select2', WPINV_PLUGIN_URL . 'assets/js/select2/select2.full' . $suffix . '.js', array( 'jquery' ), WPINV_VERSION );
+        wp_enqueue_style("select2", WPINV_PLUGIN_URL . 'assets/css/select2/select2.css', array(), WPINV_VERSION, 'all');
+        wp_enqueue_script('select2', WPINV_PLUGIN_URL . 'assets/js/select2/select2.full' . $suffix . '.js', array('jquery'), WPINV_VERSION);
 
-        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);
 
-        $version = filemtime( WPINV_PLUGIN_DIR . 'assets/js/payment-forms.js' );
-        wp_enqueue_script( 'wpinv-payment-form-script', WPINV_PLUGIN_URL . 'assets/js/payment-forms.js', array( 'wpinv-front-script' ),  $version, true );
+        $version = filemtime(WPINV_PLUGIN_DIR . 'assets/js/payment-forms.js');
+        wp_enqueue_script('wpinv-payment-form-script', WPINV_PLUGIN_URL . 'assets/js/payment-forms.js', array('wpinv-front-script'), $version, true);
     }
 
-    public function admin_enqueue_scripts( $hook ) {
+    public function admin_enqueue_scripts($hook) {
         global $post, $pagenow;
         
         $post_type  = wpinv_admin_post_type();
-        $suffix     = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
-        $page       = isset( $_GET['page'] ) ? strtolower( $_GET['page'] ) : '';
+        $suffix     = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min';
+        $page       = isset($_GET['page']) ? strtolower($_GET['page']) : '';
 
         $jquery_ui_css = false;
-        if ( ( $post_type == 'wpi_invoice' || $post_type == 'wpi_quote' || $post_type == 'wpi_discount' ) && ( $pagenow == 'post-new.php' || $pagenow == 'post.php' ) ) {
+        if (($post_type == 'wpi_invoice' || $post_type == 'wpi_quote' || $post_type == 'wpi_discount') && ($pagenow == 'post-new.php' || $pagenow == 'post.php')) {
             $jquery_ui_css = true;
-        } else if ( $page == 'wpinv-settings' || $page == 'wpinv-reports' ) {
+        } else if ($page == 'wpinv-settings' || $page == 'wpinv-reports') {
             $jquery_ui_css = true;
         }
-        if ( $jquery_ui_css ) {
-            wp_register_style( 'jquery-ui-css', WPINV_PLUGIN_URL . 'assets/css/jquery-ui' . $suffix . '.css', array(), '1.8.16' );
-            wp_enqueue_style( 'jquery-ui-css' );
+        if ($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( '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');
         
-        $version = filemtime( WPINV_PLUGIN_DIR . 'assets/css/admin.css' );
-        wp_register_style( 'wpinv_admin_style', WPINV_PLUGIN_URL . 'assets/css/admin.css', array(), $version );
-        wp_enqueue_style( 'wpinv_admin_style' );
+        $version = filemtime(WPINV_PLUGIN_DIR . 'assets/css/admin.css');
+        wp_register_style('wpinv_admin_style', WPINV_PLUGIN_URL . 'assets/css/admin.css', array(), $version);
+        wp_enqueue_style('wpinv_admin_style');
 
-        $enqueue = ( $post_type == 'wpi_discount' || $post_type == 'wpi_invoice' && ( $pagenow == 'post-new.php' || $pagenow == 'post.php' ) );
-        if ( $page == 'wpinv-subscriptions' ) {
-            wp_enqueue_script( 'jquery-ui-datepicker' );
+        $enqueue = ($post_type == 'wpi_discount' || $post_type == 'wpi_invoice' && ($pagenow == 'post-new.php' || $pagenow == 'post.php'));
+        if ($page == 'wpinv-subscriptions') {
+            wp_enqueue_script('jquery-ui-datepicker');
         }
         
-        if ( $enqueue_datepicker = apply_filters( 'wpinv_admin_enqueue_jquery_ui_datepicker', $enqueue ) ) {
-            wp_enqueue_script( 'jquery-ui-datepicker' );
+        if ($enqueue_datepicker = apply_filters('wpinv_admin_enqueue_jquery_ui_datepicker', $enqueue)) {
+            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');
@@ -353,20 +353,20 @@ 
             }
         }
 
-        wp_enqueue_style( "select2", WPINV_PLUGIN_URL . 'assets/css/select2/select2.css', array(), WPINV_VERSION, 'all' );
-        wp_enqueue_script('select2', WPINV_PLUGIN_URL . 'assets/js/select2/select2.full' . $suffix . '.js', array( 'jquery' ), WPINV_VERSION );
+        wp_enqueue_style("select2", WPINV_PLUGIN_URL . 'assets/css/select2/select2.css', array(), WPINV_VERSION, 'all');
+        wp_enqueue_script('select2', WPINV_PLUGIN_URL . 'assets/js/select2/select2.full' . $suffix . '.js', array('jquery'), WPINV_VERSION);
 
-        wp_register_script( 'wpinv-admin-script', WPINV_PLUGIN_URL . 'assets/js/admin.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.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();
@@ -374,95 +374,95 @@ 
         $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['emptyInvoice']               = __( 'Add at least one item to save invoice!', '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['delete_subscription']        = __( 'Are you sure you want to delete this subscription?', 'invoicing' );
-        $localize['action_edit']                = __( 'Edit', 'invoicing' );
-        $localize['action_cancel']              = __( 'Cancel', 'invoicing' );
-
-        $localize = apply_filters( 'wpinv_admin_js_localize', $localize );
-
-        wp_localize_script( 'wpinv-admin-script', 'WPInv_Admin', $localize );
+        $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['emptyInvoice']               = __('Add at least one item to save invoice!', '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['delete_subscription']        = __('Are you sure you want to delete this subscription?', 'invoicing');
+        $localize['action_edit']                = __('Edit', 'invoicing');
+        $localize['action_cancel']              = __('Cancel', 'invoicing');
+
+        $localize = apply_filters('wpinv_admin_js_localize', $localize);
+
+        wp_localize_script('wpinv-admin-script', 'WPInv_Admin', $localize);
 
         // Load payment form scripts on our admin pages only.
-        if ( ( $hook == 'post-new.php' || $hook == 'post.php' ) && 'wpi_payment_form' === $post->post_type ) {
+        if (($hook == 'post-new.php' || $hook == 'post.php') && 'wpi_payment_form' === $post->post_type) {
 
-            wp_enqueue_script( 'vue', WPINV_PLUGIN_URL . 'assets/js/vue/vue.js', array(), WPINV_VERSION );
-            wp_enqueue_script( 'sortable', WPINV_PLUGIN_URL . 'assets/js/sortable.min.js', array(), WPINV_VERSION );
-            wp_enqueue_script( 'vue_draggable', WPINV_PLUGIN_URL . 'assets/js/vue/vuedraggable.min.js', array( 'sortable', 'vue' ), WPINV_VERSION );
+            wp_enqueue_script('vue', WPINV_PLUGIN_URL . 'assets/js/vue/vue.js', array(), WPINV_VERSION);
+            wp_enqueue_script('sortable', WPINV_PLUGIN_URL . 'assets/js/sortable.min.js', array(), WPINV_VERSION);
+            wp_enqueue_script('vue_draggable', WPINV_PLUGIN_URL . 'assets/js/vue/vuedraggable.min.js', array('sortable', 'vue'), WPINV_VERSION);
 
-            $version = filemtime( WPINV_PLUGIN_DIR . 'assets/js/admin-payment-forms.js' );
-            wp_register_script( 'wpinv-admin-payment-form-script', WPINV_PLUGIN_URL . 'assets/js/admin-payment-forms.js', array( 'wpinv-admin-script', 'vue_draggable' ),  $version );
+            $version = filemtime(WPINV_PLUGIN_DIR . 'assets/js/admin-payment-forms.js');
+            wp_register_script('wpinv-admin-payment-form-script', WPINV_PLUGIN_URL . 'assets/js/admin-payment-forms.js', array('wpinv-admin-script', 'vue_draggable'), $version);
         
-            wp_localize_script( 'wpinv-admin-payment-form-script', 'wpinvPaymentFormAdmin', array(
+            wp_localize_script('wpinv-admin-payment-form-script', 'wpinvPaymentFormAdmin', array(
                 'elements'      => $this->form_elements->get_elements(),
-                'form_elements' => $this->form_elements->get_form_elements( $post->ID ),
+                'form_elements' => $this->form_elements->get_form_elements($post->ID),
                 'all_items'     => $this->form_elements->get_published_items(),
                 'currency'      => wpinv_currency_symbol(),
                 'position'      => wpinv_currency_position(),
                 'decimals'      => (int) wpinv_decimals(),
                 'thousands_sep' => wpinv_thousands_separator(),
                 'decimals_sep'  => wpinv_decimal_separator(),
-                'form_items'    => $this->form_elements->get_form_items( $post->ID ),
-            ) );
+                'form_items'    => $this->form_elements->get_form_items($post->ID),
+            ));
 
-            wp_enqueue_script( 'wpinv-admin-payment-form-script' );
+            wp_enqueue_script('wpinv-admin-payment-form-script');
         }
 
-        if ( $page == 'wpinv-subscriptions' ) {
-            wp_register_script( 'wpinv-sub-admin-script', WPINV_PLUGIN_URL . 'assets/js/subscriptions.js', array( 'wpinv-admin-script' ),  WPINV_VERSION );
-            wp_enqueue_script( 'wpinv-sub-admin-script' );
+        if ($page == 'wpinv-subscriptions') {
+            wp_register_script('wpinv-sub-admin-script', WPINV_PLUGIN_URL . 'assets/js/subscriptions.js', array('wpinv-admin-script'), WPINV_VERSION);
+            wp_enqueue_script('wpinv-sub-admin-script');
         }
 
     }
     
-    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_payment_form' || $current_screen->post_type == 'wpi_quote' ) ) {
+        if (!empty($current_screen->post_type) && ($current_screen->post_type == 'wpi_invoice' || $current_screen->post_type == 'wpi_payment_form' || $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 = $page && $pagenow == 'admin.php' && strpos( $page, 'wpinv-' ) === 0 ? true : false;
-        if ( $add_class ) {
-            $classes .= ' wpi-' . wpinv_sanitize_key( $page );
+        $add_class = $page && $pagenow == 'admin.php' && strpos($page, 'wpinv-') === 0 ? true : false;
+        if ($add_class) {
+            $classes .= ' wpi-' . wpinv_sanitize_key($page);
         }
         
         $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';
         }
 
@@ -474,21 +474,21 @@ 
     }
     
     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');
     }
 
 	/**
@@ -496,13 +496,13 @@ 
 	 *
 	 */
 	public function register_widgets() {
-		register_widget( "WPInv_Checkout_Widget" );
-		register_widget( "WPInv_History_Widget" );
-		register_widget( "WPInv_Receipt_Widget" );
-		register_widget( "WPInv_Subscriptions_Widget" );
-		register_widget( "WPInv_Buy_Item_Widget" );
-        register_widget( "WPInv_Messages_Widget" );
-        register_widget( 'WPInv_Payment_Form_Widget' );
+		register_widget("WPInv_Checkout_Widget");
+		register_widget("WPInv_History_Widget");
+		register_widget("WPInv_Receipt_Widget");
+		register_widget("WPInv_Subscriptions_Widget");
+		register_widget("WPInv_Buy_Item_Widget");
+        register_widget("WPInv_Messages_Widget");
+        register_widget('WPInv_Payment_Form_Widget');
 	}
     
     /**
@@ -511,10 +511,10 @@ 
      * @since 1.0.19
      * @param int[] $excluded_posts_ids
      */
-    function wpseo_exclude_from_sitemap_by_post_ids( $excluded_posts_ids ){
+    function wpseo_exclude_from_sitemap_by_post_ids($excluded_posts_ids) {
 
         // Ensure that we have an array.
-        if ( ! is_array( $excluded_posts_ids ) ) {
+        if (!is_array($excluded_posts_ids)) {
             $excluded_posts_ids = array();
         }
 
@@ -522,24 +522,24 @@ 
         $our_pages = array();
     
         // Checkout page.
-        $our_pages[] = wpinv_get_option( 'checkout_page', false );
+        $our_pages[] = wpinv_get_option('checkout_page', false);
 
         // Success page.
-        $our_pages[] = wpinv_get_option( 'success_page', false );
+        $our_pages[] = wpinv_get_option('success_page', false);
 
         // Failure page.
-        $our_pages[] = wpinv_get_option( 'failure_page', false );
+        $our_pages[] = wpinv_get_option('failure_page', false);
 
         // History page.
-        $our_pages[] = wpinv_get_option( 'invoice_history_page', false );
+        $our_pages[] = wpinv_get_option('invoice_history_page', false);
 
         // Subscriptions page.
-        $our_pages[] = wpinv_get_option( 'invoice_subscription_page', false );
+        $our_pages[] = wpinv_get_option('invoice_subscription_page', false);
 
-        $our_pages   = array_map( 'intval', array_filter( $our_pages ) );
+        $our_pages   = array_map('intval', array_filter($our_pages));
 
         $excluded_posts_ids = $excluded_posts_ids + $our_pages;
-        return array_unique( $excluded_posts_ids );
+        return array_unique($excluded_posts_ids);
 
     }
 }