AyeCode / invoicing

includes/admin/meta-boxes/class-mb-payment-form.php

Spacing +56 added lines, -56 removed lines

@@ -1,7 +1,7 @@ 
 <?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__));
 }
 
 class WPInv_Meta_Box_Payment_Form {
@@ -11,23 +11,23 @@ 
      *
      * @param WP_Post $post
      */
-    public static function output_details( $post ) {
-        $details = get_post_meta( $post->ID, 'payment_form_data', true );
+    public static function output_details($post) {
+        $details = get_post_meta($post->ID, 'payment_form_data', true);
 
-        if ( ! is_array( $details ) ) {
+        if (!is_array($details)) {
             return;
         }
 
         echo '<div class="gdmbx2-wrap form-table"> <div class="gdmbx2-metabox gdmbx-field-list">';
 
-        foreach ( $details as $key => $value ) {
-            $key = sanitize_text_field( $key );
+        foreach ($details as $key => $value) {
+            $key = sanitize_text_field($key);
 
-            if ( is_array( $value ) ) {
-                $value = implode( ',', $value );
+            if (is_array($value)) {
+                $value = implode(',', $value);
             }
 
-            $value = esc_html( $value );
+            $value = esc_html($value);
 
             echo "<div class='gdmbx-row gdmbx-type-select'>";
             echo "<div class='gdmbx-th'><label>$key:</label></div>";
@@ -43,9 +43,9 @@ 
      *
      * @param WP_Post $post
      */
-    public static function output_shortcode( $post ) {
+    public static function output_shortcode($post) {
 
-        if ( ! is_numeric( $post ) ) {
+        if (!is_numeric($post)) {
             $post = $post->ID;
         }
 
@@ -57,9 +57,9 @@ 
      *
      * @param WP_Post $post
      */
-    public static function output ( $post ) {
-        $success_page        = get_post_meta( $post->ID, 'wpinv_success_page', true );
-        $success_page        = empty( $success_page ) ? wpinv_get_success_page_uri() : $success_page
+    public static function output($post) {
+        $success_page        = get_post_meta($post->ID, 'wpinv_success_page', true);
+        $success_page        = empty($success_page) ? wpinv_get_success_page_uri() : $success_page
         ?>
 
         <div id="wpinv-form-builder" style="display: flex; flex-flow: wrap;">
@@ -67,20 +67,20 @@ 
             <div class="wpinv-form-builder-left bsui" style="flex: 0 0 320px;">
                 <ul class="wpinv-form-builder-tabs  nav nav-tabs">
                     <li class='nav-item' v-if="active_tab!='new_item'">
-                        <a @click.prevent="active_tab='new_item'" class="nav-link p-3" :class="{ 'active': active_tab=='new_item' }" href="#"><?php _e( 'Add new element', 'invoicing' ); ?></a>
+                        <a @click.prevent="active_tab='new_item'" class="nav-link p-3" :class="{ 'active': active_tab=='new_item' }" href="#"><?php _e('Add new element', 'invoicing'); ?></a>
                     </li>
                     <li class='nav-item' v-if='false'>
-                        <a @click.prevent="active_tab='edit_item'" class="nav-link p-3" :class="{ 'active': active_tab=='edit_item' }" href="#"><?php _e( 'Edit element', 'invoicing' ); ?></a>
+                        <a @click.prevent="active_tab='edit_item'" class="nav-link p-3" :class="{ 'active': active_tab=='edit_item' }" href="#"><?php _e('Edit element', 'invoicing'); ?></a>
                     </li>
                     <li class='nav-item' v-if='false'>
-                        <a @click.prevent="active_tab='settings'" class="nav-link p-3" :class="{ 'active': active_tab=='settings' }" href="#"><?php _e( 'Settings', 'invoicing' ); ?></a>
+                        <a @click.prevent="active_tab='settings'" class="nav-link p-3" :class="{ 'active': active_tab=='settings' }" href="#"><?php _e('Settings', 'invoicing'); ?></a>
                     </li>
                 </ul>
 
                 <div class="wpinv-form-builder-tab-content bsui" style="margin-top: 16px;">
                     <div class="wpinv-form-builder-tab-pane" v-if="active_tab=='new_item'">
                         <div class="wpinv-form-builder-add-field-types">
-                            <small class='form-text text-muted'><?php _e( 'Add an element by dragging it to the payment form.', 'invoicing' ); ?></small>
+                            <small class='form-text text-muted'><?php _e('Add an element by dragging it to the payment form.', 'invoicing'); ?></small>
                             <draggable class="section mt-2" style="display: flex; flex-flow: wrap; justify-content: space-between;" v-model="elements" :group="{ name: 'fields', pull: 'clone', put: false }" :sort="false" :clone="addDraggedField" tag="ul" filter=".wpinv-undraggable">
                                 <li v-for="element in elements" class= "wpinv-payment-form-left-fields-field" @click.prevent="addField(element)" :class="{ 'd-none': element.defaults.premade }">
                                     <button class="button btn">
@@ -95,9 +95,9 @@ 
 
                     <div class="wpinv-form-builder-tab-pane bsui" v-if="active_tab=='edit_item'" style="font-size: 16px;">
                         <div class="wpinv-form-builder-edit-field-wrapper">
-                            <?php do_action( 'wpinv_payment_form_edit_element_template', 'active_form_element', $post ); ?>
+                            <?php do_action('wpinv_payment_form_edit_element_template', 'active_form_element', $post); ?>
                             <div>
-                                <button type="button" class="button button-link button-link-delete" @click.prevent="removeField(active_form_element)" v-show="! active_form_element.premade"><?php _e( 'Delete Field', 'invoicing' ); ?></button>
+                                <button type="button" class="button button-link button-link-delete" @click.prevent="removeField(active_form_element)" v-show="! active_form_element.premade"><?php _e('Delete Field', 'invoicing'); ?></button>
                             </div>
                         </div>
                     </div>
@@ -106,9 +106,9 @@ 
                         <div class="wpinv-form-builder-settings-wrapper">
                         
                             <div class='form-group'>
-                                <label for="wpi-success-page"><?php _e( 'Success Page', 'invoicing' ); ?></label>
-                                <input  placeholder="https://" id='wpi-success-page' value="<?php echo esc_url( $success_page ); ?>" class='form-control' type='text'>
-                                <small class='form-text text-muted'><?php _e( 'Where should we redirect users after successfuly completing their payment?', 'invoicing' ); ?></small>
+                                <label for="wpi-success-page"><?php _e('Success Page', 'invoicing'); ?></label>
+                                <input  placeholder="https://" id='wpi-success-page' value="<?php echo esc_url($success_page); ?>" class='form-control' type='text'>
+                                <small class='form-text text-muted'><?php _e('Where should we redirect users after successfuly completing their payment?', 'invoicing'); ?></small>
                             </div>
 
                         </div>
@@ -119,12 +119,12 @@ 
 
             <div class="wpinv-form-builder-right" style="flex: 1; padding-top: 40px;border-left: 1px solid #ddd;padding-left: 20px;min-height: 520px;margin-left: 10px;">
 
-                <small class='form-text text-muted' v-if='form_elements.length'><?php _e( 'Click on any element to edit or delete it.', 'invoicing' ); ?></small>
-                <p class='form-text text-muted' v-if='! form_elements.length'><?php _e( 'This form is empty. Add new elements by dragging them from the right.', 'invoicing' ); ?></p>
+                <small class='form-text text-muted' v-if='form_elements.length'><?php _e('Click on any element to edit or delete it.', 'invoicing'); ?></small>
+                <p class='form-text text-muted' v-if='! form_elements.length'><?php _e('This form is empty. Add new elements by dragging them from the right.', 'invoicing'); ?></p>
 
                 <draggable class="section bsui" v-model="form_elements" @add="highlightLastDroppedField" group="fields" tag="div" style="min-height: 100%; font-size: 16px;">
                     <div v-for="form_element in form_elements" class="wpinv-form-builder-element-preview" :class="{ active: active_form_element==form_element &&  active_tab=='edit_item' }" @click="active_tab = 'edit_item'; active_form_element = form_element">
-                        <?php do_action( 'wpinv_payment_form_render_element_template', 'form_element', $post ); ?>
+                        <?php do_action('wpinv_payment_form_render_element_template', 'form_element', $post); ?>
                     </div>
                 </draggable>
             </div>
@@ -133,7 +133,7 @@ 
             <textarea style="display:none;" name="wpinv_form_items" v-model="itemString"></textarea>
         </div>
         
-        <?php wp_nonce_field( 'wpinv_save_payment_form', 'wpinv_save_payment_form' ) ;?>
+        <?php wp_nonce_field('wpinv_save_payment_form', 'wpinv_save_payment_form'); ?>
 
         <?php
     }
@@ -141,86 +141,86 @@ 
     /**
      * Saves our payment forms.
      */
-    public static function save( $post_id, $post ) {
+    public static function save($post_id, $post) {
 
-        remove_action( 'save_post', 'WPInv_Meta_Box_Payment_Form::save' );
+        remove_action('save_post', 'WPInv_Meta_Box_Payment_Form::save');
 
         // $post_id and $post are required.
-        if ( empty( $post_id ) || empty( $post ) ) {
+        if (empty($post_id) || empty($post)) {
             return;
         }
         
         // Ensure that this user can edit the post.
-        if ( ! current_user_can( 'edit_post', $post_id ) ) {
+        if (!current_user_can('edit_post', $post_id)) {
             return;
         }
 
         // Dont' save meta boxes for revisions or autosaves
-        if ( defined( 'DOING_AUTOSAVE' ) || is_int( wp_is_post_revision( $post ) ) || is_int( wp_is_post_autosave( $post ) ) ) {
+        if (defined('DOING_AUTOSAVE') || is_int(wp_is_post_revision($post)) || is_int(wp_is_post_autosave($post))) {
             return;
         }
 
         // Do not save for ajax requests.
-        if ( ( defined( 'DOING_AJAX') && DOING_AJAX ) || isset( $_REQUEST['bulk_edit'] ) ) {
+        if ((defined('DOING_AJAX') && DOING_AJAX) || isset($_REQUEST['bulk_edit'])) {
             return;
         }
 
         // Confirm the security nonce.
-        if ( empty( $_POST['wpinv_save_payment_form'] ) || ! wp_verify_nonce( $_POST['wpinv_save_payment_form'], 'wpinv_save_payment_form' ) ) {
+        if (empty($_POST['wpinv_save_payment_form']) || !wp_verify_nonce($_POST['wpinv_save_payment_form'], 'wpinv_save_payment_form')) {
             return;
         }
 
         // Save form items.
-        $form_items = json_decode( wp_unslash( $_POST['wpinv_form_items'] ), true );
+        $form_items = json_decode(wp_unslash($_POST['wpinv_form_items']), true);
 
-        if ( empty( $form_items ) ) {
+        if (empty($form_items)) {
             $form_items = array();
         }
 
-        update_post_meta( $post_id, 'wpinv_form_items', self::maybe_save_items( $form_items ) );
+        update_post_meta($post_id, 'wpinv_form_items', self::maybe_save_items($form_items));
 
         // Save form elements.
-        $wpinv_form_elements = json_decode( wp_unslash( $_POST['wpinv_form_elements'] ), true );
-        if ( empty( $wpinv_form_elements ) ) {
+        $wpinv_form_elements = json_decode(wp_unslash($_POST['wpinv_form_elements']), true);
+        if (empty($wpinv_form_elements)) {
             $wpinv_form_elements = array();
         }
 
-        update_post_meta( $post_id, 'wpinv_form_elements', $wpinv_form_elements );
+        update_post_meta($post_id, 'wpinv_form_elements', $wpinv_form_elements);
     }
 
     /**
      * Saves unsaved form items.
      */
-    public static function maybe_save_items( $items ) {
+    public static function maybe_save_items($items) {
 
         $saved = array();
 
-        foreach( $items as $item ) {
+        foreach ($items as $item) {
 
-            if ( is_numeric( $item['id'] ) ) {
+            if (is_numeric($item['id'])) {
                 $saved[] = $item;
                 continue;
             }
 
             $data = array(
-                'post_title'   => sanitize_text_field( $item['title'] ),
-                'post_excerpt' => wp_kses_post( $item['description'] ),
+                'post_title'   => sanitize_text_field($item['title']),
+                'post_excerpt' => wp_kses_post($item['description']),
                 'post_status'  => 'publish',
                 'meta'         => array(
-                    'type'      => empty( $item['type'] ) ? 'custom' : $item['type'] ,
-                    'price'     => wpinv_sanitize_amount( $item['price'] ),
-                    'vat_rule'  => empty( $item['rule'] ) ? 'digital' : $item['rule'],
-                    'vat_class' => empty( $item['class'] ) ? '_standard' : $item['class'],
+                    'type'      => empty($item['type']) ? 'custom' : $item['type'],
+                    'price'     => wpinv_sanitize_amount($item['price']),
+                    'vat_rule'  => empty($item['rule']) ? 'digital' : $item['rule'],
+                    'vat_class' => empty($item['class']) ? '_standard' : $item['class'],
                 )
             );
 
-            $new_item  = new WPInv_Item();
-            $new_item->create( $data );
+            $new_item = new WPInv_Item();
+            $new_item->create($data);
     
-            if ( ! empty( $new_item ) ) {
+            if (!empty($new_item)) {
                 $item['id'] = $new_item->ID;
-                unset( $item['new'] );
-                unset( $item['type'] );
+                unset($item['new']);
+                unset($item['type']);
                 $saved[] = $item;
             }
 
@@ -232,5 +232,5 @@ 
 
 }
 
-add_action( 'save_post_wpi_payment_form', 'WPInv_Meta_Box_Payment_Form::save', 10, 2 );
+add_action('save_post_wpi_payment_form', 'WPInv_Meta_Box_Payment_Form::save', 10, 2);
 

includes/admin/meta-boxes/class-mb-invoice-details.php

Spacing +97 added lines, -97 removed lines

@@ -1,32 +1,32 @@ 
 <?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__));
 }
 
 class WPInv_Meta_Box_Details {
-    public static function output( $post ) {
+    public static function output($post) {
         global $wpinv_euvat;
 
         $currency_symbol    = wpinv_currency_symbol();
-        $statuses           = wpinv_get_invoice_statuses( true );
+        $statuses           = wpinv_get_invoice_statuses(true);
 
-        $post_id            = !empty( $post->ID ) ? $post->ID : 0;
-        $invoice            = new WPInv_Invoice( $post_id );
-        $status             = $invoice->get_status( false ); // Current status    
+        $post_id            = !empty($post->ID) ? $post->ID : 0;
+        $invoice            = new WPInv_Invoice($post_id);
+        $status             = $invoice->get_status(false); // Current status    
         $discount           = $invoice->get_discount();
         $discount_code      = $discount > 0 ? $invoice->get_discount_code() : '';
         $invoice_number     = $invoice->get_number();
         $taxable            = $invoice->is_taxable();
 
         $date_created       = $invoice->get_created_date();
-        $datetime_created   = strtotime( $date_created );
-        $date_created       = $date_created != '' && $date_created != '0000-00-00 00:00:00' ? date_i18n( get_option( 'date_format' ) . ' ' . get_option( 'time_format' ), $datetime_created ) : '';
+        $datetime_created   = strtotime($date_created);
+        $date_created       = $date_created != '' && $date_created != '0000-00-00 00:00:00' ? date_i18n(get_option('date_format') . ' ' . get_option('time_format'), $datetime_created) : '';
         $date_completed     = $invoice->get_completed_date();
-        $date_completed     = $date_completed != '' && $date_completed != '0000-00-00 00:00:00' ? date_i18n( get_option( 'date_format' ) . ' ' . get_option( 'time_format' ), strtotime( $date_completed ) ) : 'n/a';
-        $title['status'] = __( 'Invoice Status:', 'invoicing' );
-        $title['number'] = __( 'Invoice Number:', 'invoicing' );
-        $mail_notice = esc_attr__( 'After saving invoice, this will send a copy of the invoice to the user&#8217;s email address.', 'invoicing' );
+        $date_completed     = $date_completed != '' && $date_completed != '0000-00-00 00:00:00' ? date_i18n(get_option('date_format') . ' ' . get_option('time_format'), strtotime($date_completed)) : 'n/a';
+        $title['status'] = __('Invoice Status:', 'invoicing');
+        $title['number'] = __('Invoice Number:', 'invoicing');
+        $mail_notice = esc_attr__('After saving invoice, this will send a copy of the invoice to the user&#8217;s email address.', 'invoicing');
 
         $title = apply_filters('wpinv_details_metabox_titles', $title, $invoice);
         $statuses = apply_filters('wpinv_invoice_statuses', $statuses, $invoice);
@@ -37,39 +37,39 @@ 
     <div class="gdmbx2-metabox gdmbx-field-list" id="gdmbx2-metabox-wpinv_details">
 
         <div class="gdmbx-row gdmbx-type-text gdmbx2-id-wpinv-date-created table-layout">
-            <div class="gdmbx-th"><label for="wpinv_date_created"><?php _e( 'Date Created:', 'invoicing' );?></label></div>
+            <div class="gdmbx-th"><label for="wpinv_date_created"><?php _e('Date Created:', 'invoicing'); ?></label></div>
             <div class="gdmbx-td">
-                <input type="datetime-local" value="<?php echo esc_attr( date( 'Y-m-d\TH:i:s', $datetime_created ) );?>" id="wpinv_date_created" name="date_created" class="regular-text">
+                <input type="datetime-local" value="<?php echo esc_attr(date('Y-m-d\TH:i:s', $datetime_created)); ?>" id="wpinv_date_created" name="date_created" class="regular-text">
             </div>
         </div>
 
-        <?php if ( $invoice->post_type == 'wpi_invoice' && wpinv_get_option( 'overdue_active' ) && ( $invoice->needs_payment() || $invoice->has_status( array( 'auto-draft', 'draft' ) ) ) ) { ?>
+        <?php if ($invoice->post_type == 'wpi_invoice' && wpinv_get_option('overdue_active') && ($invoice->needs_payment() || $invoice->has_status(array('auto-draft', 'draft')))) { ?>
         <div class="gdmbx-row gdmbx-type-select gdmbx2-id-wpinv-date-overdue">
-            <div class="gdmbx-th"><label for="wpinv_due_date"><?php _e( 'Due Date:', 'invoicing' );?></label></div>
+            <div class="gdmbx-th"><label for="wpinv_due_date"><?php _e('Due Date:', 'invoicing'); ?></label></div>
             <div class="gdmbx-td">
-                <input type="text" placeholder="<?php esc_attr_e( 'Y-m-d', 'invoicing' );?>" value="<?php echo esc_attr( $invoice->get_due_date() );?>" id="wpinv_due_date" name="wpinv_due_date" class="regular-text wpiDatepicker" data-minDate="<?php echo esc_attr( date_i18n( 'Y-m-d', $datetime_created ) );?>" data-dateFormat="yy-mm-dd">
-                <p class="wpi-meta-row wpi-meta-desc"><?php _e( 'Leave blank to disable sending auto reminder for this invoice.', 'invoicing' );?></p>
+                <input type="text" placeholder="<?php esc_attr_e('Y-m-d', 'invoicing'); ?>" value="<?php echo esc_attr($invoice->get_due_date()); ?>" id="wpinv_due_date" name="wpinv_due_date" class="regular-text wpiDatepicker" data-minDate="<?php echo esc_attr(date_i18n('Y-m-d', $datetime_created)); ?>" data-dateFormat="yy-mm-dd">
+                <p class="wpi-meta-row wpi-meta-desc"><?php _e('Leave blank to disable sending auto reminder for this invoice.', 'invoicing'); ?></p>
             </div>
         </div>
         <?php } ?>
-        <?php do_action( 'wpinv_meta_box_details_after_due_date', $post_id ); ?>
-        <?php if ( $date_completed && $date_completed != 'n/a' ) { ?>
+        <?php do_action('wpinv_meta_box_details_after_due_date', $post_id); ?>
+        <?php if ($date_completed && $date_completed != 'n/a') { ?>
         <div class="gdmbx-row gdmbx-type-select gdmbx2-id-wpinv-date-completed">
-            <div class="gdmbx-th"><label><?php _e( 'Payment Date:', 'invoicing' );?></label></div>
-            <div class="gdmbx-td"><?php echo $date_completed;?></div>
+            <div class="gdmbx-th"><label><?php _e('Payment Date:', 'invoicing'); ?></label></div>
+            <div class="gdmbx-td"><?php echo $date_completed; ?></div>
         </div>
         <?php } ?>
-        <?php $is_viewed = wpinv_is_invoice_viewed( $post_id ); ?>
+        <?php $is_viewed = wpinv_is_invoice_viewed($post_id); ?>
         <div class="gdmbx-row gdmbx-type-select gdmbx2-id-wpinv-customer-viewed">
-            <div class="gdmbx-th"><label><?php _e( 'Viewed by Customer:', 'invoicing' );?></label></div>
-            <div class="gdmbx-td"><?php ( 1 == $is_viewed ) ? _e( 'Yes', 'invoicing' ) : _e( 'No', 'invoicing' ); ?></div>
+            <div class="gdmbx-th"><label><?php _e('Viewed by Customer:', 'invoicing'); ?></label></div>
+            <div class="gdmbx-td"><?php (1 == $is_viewed) ? _e('Yes', 'invoicing') : _e('No', 'invoicing'); ?></div>
         </div>
         <div class="gdmbx-row gdmbx-type-select gdmbx2-id-wpinv-status">
             <div class="gdmbx-th"><label for="wpinv_status"><?php echo $title['status']; ?></label></div>
             <div class="gdmbx-td">
                 <select required="required" id="wpinv_status" name="wpinv_status" class="gdmbx2_select wpi_select2">
-                    <?php foreach ( $statuses as $value => $label ) { ?>
-                    <option value="<?php echo $value;?>" <?php selected( $status, $value );?>><?php echo $label;?></option>
+                    <?php foreach ($statuses as $value => $label) { ?>
+                    <option value="<?php echo $value; ?>" <?php selected($status, $value); ?>><?php echo $label; ?></option>
                     <?php } ?>
                 </select>
             </div>
@@ -78,129 +78,129 @@ 
         <div class="gdmbx-row gdmbx-type-text gdmbx2-id-wpinv-number table-layout">
             <div class="gdmbx-th"><label for="wpinv_number"><?php echo $title['number']; ?></label></div>
             <div class="gdmbx-td">
-                <input type="text" value="<?php echo esc_attr( $invoice_number );?>" id="wpinv_number" name="wpinv_number" class="regular-text" readonly>
+                <input type="text" value="<?php echo esc_attr($invoice_number); ?>" id="wpinv_number" name="wpinv_number" class="regular-text" readonly>
             </div>
         </div>
-        <?php do_action( 'wpinv_meta_box_details_inner', $post_id );
+        <?php do_action('wpinv_meta_box_details_inner', $post_id);
         $disable_discount = apply_filters('wpinv_disable_apply_discount', false, $invoice, $post_id);
         ?>
 
-        <?php if ( $wpinv_euvat->allow_vat_rules() && ! ( $invoice->is_paid() || $invoice->is_refunded() ) ) { ?>
+        <?php if ($wpinv_euvat->allow_vat_rules() && !($invoice->is_paid() || $invoice->is_refunded())) { ?>
         <div class="gdmbx-row gdmbx-type-select gdmbx2-id-wpinv-taxable">
             <div class="gdmbx-th">
                 <label for="wpinv_taxable">
-                    <input type="checkbox" name="disable_taxes" value="1" <?php checked( $taxable, false ); ?> id="wpinv_taxable">
-                    <?php _e( 'Disable taxes', 'invoicing' ); ?>
+                    <input type="checkbox" name="disable_taxes" value="1" <?php checked($taxable, false); ?> id="wpinv_taxable">
+                    <?php _e('Disable taxes', 'invoicing'); ?>
                 </label>
             </div>
         </div>
         <?php } ?>
 
-        <?php if ( !( $is_paid = ( $invoice->is_paid() || $invoice->is_refunded() ) ) && !$disable_discount || $discount_code ) { ?>
+        <?php if (!($is_paid = ($invoice->is_paid() || $invoice->is_refunded())) && !$disable_discount || $discount_code) { ?>
         <div class="gdmbx-row gdmbx-type-text gdmbx2-id-wpinv-discount-code table-layout">
-            <div class="gdmbx-th"><label for="wpinv_discount_code"><?php _e( 'Discount Code:', 'invoicing' );?></label></div>
+            <div class="gdmbx-th"><label for="wpinv_discount_code"><?php _e('Discount Code:', 'invoicing'); ?></label></div>
             <div class="gdmbx-td">
-                <input type="text" value="<?php echo esc_attr( $discount_code ); ?>" id="wpinv_discount" class="medium-text" <?php echo ( $discount_code ? 'readonly' : '' ); ?> /><?php if ( !$is_paid && !$disable_discount ) { ?><input value="<?php echo esc_attr_e( 'Apply', 'invoicing' ); ?>" class="button button-small button-primary <?php echo ( $discount_code ? 'wpi-hide' : 'wpi-inlineb' ); ?>" id="wpinv-apply-code" type="button" /><input value="<?php echo esc_attr_e( 'Remove', 'invoicing' ); ?>" class="button button-small button-primary <?php echo ( $discount_code ? 'wpi-inlineb' : 'wpi-hide' ); ?>" id="wpinv-remove-code" type="button" /><?php } ?>
+                <input type="text" value="<?php echo esc_attr($discount_code); ?>" id="wpinv_discount" class="medium-text" <?php echo ($discount_code ? 'readonly' : ''); ?> /><?php if (!$is_paid && !$disable_discount) { ?><input value="<?php echo esc_attr_e('Apply', 'invoicing'); ?>" class="button button-small button-primary <?php echo ($discount_code ? 'wpi-hide' : 'wpi-inlineb'); ?>" id="wpinv-apply-code" type="button" /><input value="<?php echo esc_attr_e('Remove', 'invoicing'); ?>" class="button button-small button-primary <?php echo ($discount_code ? 'wpi-inlineb' : 'wpi-hide'); ?>" id="wpinv-remove-code" type="button" /><?php } ?>
             </div>
         </div>
         <?php } ?>
     </div>
 </div>
 <div class="gdmbx-row gdmbx-type-text gdmbx-wpinv-save-send table-layout">
-    <p class="wpi-meta-row wpi-save-send"><label for="wpi_save_send"><?php echo sprintf(__( 'Send %s:', 'invoicing' ),$post_obj->labels->singular_name) ; ?></label>
+    <p class="wpi-meta-row wpi-save-send"><label for="wpi_save_send"><?php echo sprintf(__('Send %s:', 'invoicing'), $post_obj->labels->singular_name); ?></label>
         <select id="wpi_save_send" name="wpi_save_send" class="wpi_select2">
-            <option value="1"><?php _e( 'Yes', 'invoicing' ); ?></option>
-            <option value="" selected="selected"><?php _e( 'No', 'invoicing' ); ?></option>
+            <option value="1"><?php _e('Yes', 'invoicing'); ?></option>
+            <option value="" selected="selected"><?php _e('No', 'invoicing'); ?></option>
         </select>
     </p>
     <p class="wpi-meta-row wpi-send-info"><?php echo $mail_notice; ?></p>
 </div>
-<?php wp_nonce_field( 'wpinv_details', 'wpinv_details_nonce' ) ;?>
+<?php wp_nonce_field('wpinv_details', 'wpinv_details_nonce'); ?>
         <?php
     }
     
-    public static function resend_invoice( $post ) {
+    public static function resend_invoice($post) {
         global $wpi_mb_invoice;
         
-        if ( empty( $wpi_mb_invoice ) ) {
+        if (empty($wpi_mb_invoice)) {
             return;
         }
         
         $text = array(
-            'message'       => esc_attr__( 'This will send a copy of the invoice to the customer&#8217;s email address.', 'invoicing' ),
-            'button_text'   =>  __( 'Resend Invoice', 'invoicing' ),
+            'message'       => esc_attr__('This will send a copy of the invoice to the customer&#8217;s email address.', 'invoicing'),
+            'button_text'   =>  __('Resend Invoice', 'invoicing'),
         );
             
         $text = apply_filters('wpinv_resend_invoice_metabox_text', $text);
-        do_action( 'wpinv_metabox_resend_invoice_before', $wpi_mb_invoice );
+        do_action('wpinv_metabox_resend_invoice_before', $wpi_mb_invoice);
         
-        if ( $email = $wpi_mb_invoice->get_email() ) {
+        if ($email = $wpi_mb_invoice->get_email()) {
             $email_actions = array();
-            $email_actions['email_url']      = remove_query_arg( 'wpinv-message', add_query_arg( array( 'wpi_action' => 'send_invoice', 'invoice_id' => $post->ID ) ) );
-            $email_actions['reminder_url']   = add_query_arg( array( 'wpi_action' => 'send_reminder', 'invoice_id' => $post->ID ) );
+            $email_actions['email_url']      = remove_query_arg('wpinv-message', add_query_arg(array('wpi_action' => 'send_invoice', 'invoice_id' => $post->ID)));
+            $email_actions['reminder_url']   = add_query_arg(array('wpi_action' => 'send_reminder', 'invoice_id' => $post->ID));
             
-            $email_actions = apply_filters('wpinv_resend_invoice_email_actions', $email_actions );
+            $email_actions = apply_filters('wpinv_resend_invoice_email_actions', $email_actions);
         ?>
         <p class="wpi-meta-row wpi-resend-info"><?php echo $text['message']; ?></p>
-        <p class="wpi-meta-row wpi-resend-email"><a href="<?php echo esc_url( $email_actions['email_url'] ); ?>" class="button button-secondary"><?php echo $text['button_text']; ?></a></p>
-        <?php if ( wpinv_get_option( 'overdue_active' ) && "wpi_invoice" === $wpi_mb_invoice->post_type && $wpi_mb_invoice->needs_payment() && ( $due_date = $wpi_mb_invoice->get_due_date() ) ) { ?>
-        <p class="wpi-meta-row wpi-send-reminder"><a title="<?php esc_attr_e( 'Send overdue reminder notification to customer', 'invoicing' ); ?>" href="<?php echo esc_url( $email_actions['reminder_url'] ); ?>" class="button button-secondary"><?php esc_attr_e( 'Send Reminder', 'invoicing' ); ?></a></p>
+        <p class="wpi-meta-row wpi-resend-email"><a href="<?php echo esc_url($email_actions['email_url']); ?>" class="button button-secondary"><?php echo $text['button_text']; ?></a></p>
+        <?php if (wpinv_get_option('overdue_active') && "wpi_invoice" === $wpi_mb_invoice->post_type && $wpi_mb_invoice->needs_payment() && ($due_date = $wpi_mb_invoice->get_due_date())) { ?>
+        <p class="wpi-meta-row wpi-send-reminder"><a title="<?php esc_attr_e('Send overdue reminder notification to customer', 'invoicing'); ?>" href="<?php echo esc_url($email_actions['reminder_url']); ?>" class="button button-secondary"><?php esc_attr_e('Send Reminder', 'invoicing'); ?></a></p>
         <?php } ?>
         <?php
         }
         
-        do_action( 'wpinv_metabox_resend_invoice_after', $wpi_mb_invoice );
+        do_action('wpinv_metabox_resend_invoice_after', $wpi_mb_invoice);
     }
     
-    public static function subscriptions( $post ) {
-        $invoice = wpinv_get_invoice( $post->ID );
+    public static function subscriptions($post) {
+        $invoice = wpinv_get_invoice($post->ID);
 
-        if ( ! empty( $invoice ) && $invoice->is_recurring() && $invoice->is_parent() ) {
-            $subscription = wpinv_get_subscription( $invoice );
+        if (!empty($invoice) && $invoice->is_recurring() && $invoice->is_parent()) {
+            $subscription = wpinv_get_subscription($invoice);
 
-            if ( empty( $subscription ) ) {
+            if (empty($subscription)) {
                 ?>
-                <p class="wpi-meta-row"><?php echo wp_sprintf( __( 'New Subscription will be created when customer will checkout and pay the invoice. Go to: %sSubscriptions%s', 'invoicing' ), '<a href="' . admin_url( 'admin.php?page=wpinv-subscriptions' ).'">', '</a>' ); ?></p>
+                <p class="wpi-meta-row"><?php echo wp_sprintf(__('New Subscription will be created when customer will checkout and pay the invoice. Go to: %sSubscriptions%s', 'invoicing'), '<a href="' . admin_url('admin.php?page=wpinv-subscriptions') . '">', '</a>'); ?></p>
                 <?php
                 return;
             }
-            $frequency = WPInv_Subscriptions::wpinv_get_pretty_subscription_frequency( $subscription->period, $subscription->frequency );
-            $billing = wpinv_price(wpinv_format_amount( $subscription->recurring_amount ), wpinv_get_invoice_currency_code( $subscription->parent_payment_id ) ) . ' / ' . $frequency;
-            $initial = wpinv_price(wpinv_format_amount( $subscription->initial_amount ), wpinv_get_invoice_currency_code( $subscription->parent_payment_id ) );
+            $frequency = WPInv_Subscriptions::wpinv_get_pretty_subscription_frequency($subscription->period, $subscription->frequency);
+            $billing = wpinv_price(wpinv_format_amount($subscription->recurring_amount), wpinv_get_invoice_currency_code($subscription->parent_payment_id)) . ' / ' . $frequency;
+            $initial = wpinv_price(wpinv_format_amount($subscription->initial_amount), wpinv_get_invoice_currency_code($subscription->parent_payment_id));
             $payments = $subscription->get_child_payments();
             ?>
             <p class="wpi-meta-row wpi-sub-label <?php echo 'status-' . $subscription->status; ?>"><?php _e('Recurring Payment', 'invoicing'); ?></p>
-            <?php if ( ! empty( $subscription ) && ! empty( $subscription->id ) ) { ?>
+            <?php if (!empty($subscription) && !empty($subscription->id)) { ?>
                 <p class="wpi-meta-row wpi-sub-id">
-                    <label><?php _e( 'Subscription ID:', 'invoicing' ); ?> </label><a href="<?php echo esc_url( admin_url( 'admin.php?page=wpinv-subscriptions&id=' . $subscription->id ) ); ?>" title="<?php esc_attr_e( 'View or edit subscription', 'invoicing' ); ?>" target="_blank"><?php echo $subscription->id; ?></a></p>
+                    <label><?php _e('Subscription ID:', 'invoicing'); ?> </label><a href="<?php echo esc_url(admin_url('admin.php?page=wpinv-subscriptions&id=' . $subscription->id)); ?>" title="<?php esc_attr_e('View or edit subscription', 'invoicing'); ?>" target="_blank"><?php echo $subscription->id; ?></a></p>
             <?php } ?>
             <p class="wpi-meta-row wpi-bill-cycle">
-                <label><?php _e( 'Billing Cycle:', 'invoicing'); ?> </label><?php printf( _x( '%s then %s', 'Initial subscription amount then billing cycle and amount', 'invoicing' ), $initial, $billing ); ?>
+                <label><?php _e('Billing Cycle:', 'invoicing'); ?> </label><?php printf(_x('%s then %s', 'Initial subscription amount then billing cycle and amount', 'invoicing'), $initial, $billing); ?>
             </p>
             <p class="wpi-meta-row wpi-billed-times">
-                <label><?php _e( 'Times Billed:', 'invoicing' ); ?> </label><?php echo $subscription->get_times_billed() . ' / ' . ( ( $subscription->bill_times == 0 ) ? 'Until Cancelled' : $subscription->bill_times ); ?>
+                <label><?php _e('Times Billed:', 'invoicing'); ?> </label><?php echo $subscription->get_times_billed() . ' / ' . (($subscription->bill_times == 0) ? 'Until Cancelled' : $subscription->bill_times); ?>
             </p>
             <p class="wpi-meta-row wpi-start-date">
-                <label><?php _e( 'Start Date:', 'invoicing' ); ?> </label><?php echo date_i18n( get_option( 'date_format' ), strtotime( $subscription->created, current_time( 'timestamp' ) ) ); ?>
+                <label><?php _e('Start Date:', 'invoicing'); ?> </label><?php echo date_i18n(get_option('date_format'), strtotime($subscription->created, current_time('timestamp'))); ?>
             </p>
             <p class="wpi-meta-row wpi-end-date">
-                <label><?php echo ( 'trialling' == $subscription->status ? __( 'Trialling Until:', 'invoicing' ) : __( 'Expiration Date:', 'invoicing' ) ); ?> </label><?php echo date_i18n( get_option( 'date_format' ), strtotime( $subscription->expiration, current_time( 'timestamp' ) ) ); ?>
+                <label><?php echo ('trialling' == $subscription->status ? __('Trialling Until:', 'invoicing') : __('Expiration Date:', 'invoicing')); ?> </label><?php echo date_i18n(get_option('date_format'), strtotime($subscription->expiration, current_time('timestamp'))); ?>
             </p>
-            <?php if ( $subscription->status ) { ?>
+            <?php if ($subscription->status) { ?>
                 <p class="wpi-meta-row wpi-sub-status">
-                    <label><?php _e( 'Subscription Status:', 'invoicing'); ?> </label><?php echo $subscription->get_status_label(); ?>
+                    <label><?php _e('Subscription Status:', 'invoicing'); ?> </label><?php echo $subscription->get_status_label(); ?>
                 </p>
             <?php } ?>
-            <?php if ( !empty( $payments ) ) { ?>
-                <p><strong><?php _e( 'Renewal Payments:', 'invoicing' ); ?></strong></p>
+            <?php if (!empty($payments)) { ?>
+                <p><strong><?php _e('Renewal Payments:', 'invoicing'); ?></strong></p>
                 <ul id="wpi-sub-payments">
-                <?php foreach ( $payments as $payment ) {
+                <?php foreach ($payments as $payment) {
                     $invoice_id = $payment->ID;
                     ?>
                     <li>
-                        <a href="<?php echo esc_url( get_edit_post_link( $invoice_id ) ); ?>"><?php echo wpinv_get_invoice_number( $invoice_id ); ?></a>&nbsp;&ndash;&nbsp;
-                        <span><?php echo wpinv_get_invoice_date( $invoice_id ); ?>&nbsp;&ndash;&nbsp;</span>
-                        <span><?php echo wpinv_payment_total( $invoice_id, true ); ?></span>
+                        <a href="<?php echo esc_url(get_edit_post_link($invoice_id)); ?>"><?php echo wpinv_get_invoice_number($invoice_id); ?></a>&nbsp;&ndash;&nbsp;
+                        <span><?php echo wpinv_get_invoice_date($invoice_id); ?>&nbsp;&ndash;&nbsp;</span>
+                        <span><?php echo wpinv_payment_total($invoice_id, true); ?></span>
                     </li>
                 <?php } ?>
                 </ul>
@@ -208,50 +208,50 @@ 
         }
     }
     
-    public static function renewals( $post ) {
-        $invoice = wpinv_get_invoice( $post->ID );
+    public static function renewals($post) {
+        $invoice = wpinv_get_invoice($post->ID);
         
-        if ( wpinv_is_subscription_payment( $invoice ) ) {
-            $parent_url = get_edit_post_link( $invoice->parent_invoice );
-            $parent_id  = wpinv_get_invoice_number( $invoice->parent_invoice );
-            $subscription = wpinv_get_subscription( $invoice );
+        if (wpinv_is_subscription_payment($invoice)) {
+            $parent_url = get_edit_post_link($invoice->parent_invoice);
+            $parent_id  = wpinv_get_invoice_number($invoice->parent_invoice);
+            $subscription = wpinv_get_subscription($invoice);
         ?>
-        <?php if ( ! empty( $subscription ) ) { ?><p class="wpi-meta-row wpi-sub-id"><label><?php _e('Subscription ID:', 'invoicing'); ?> </label><a href="<?php echo esc_url( admin_url( 'admin.php?page=wpinv-subscriptions&id=' . $subscription->id ) ); ?>" title="<?php esc_attr_e( 'View or edit subscription', 'invoicing' ); ?>" target="_blank"><?php echo $subscription->id; ?></a></p><?php } ?>
-        <p class="wpi-meta-row wpi-parent-id"><label><?php _e( 'Parent Invoice:', 'invoicing' );?> </label><a href="<?php echo esc_url( $parent_url ); ?>"><?php echo $parent_id; ?></a></p>
+        <?php if (!empty($subscription)) { ?><p class="wpi-meta-row wpi-sub-id"><label><?php _e('Subscription ID:', 'invoicing'); ?> </label><a href="<?php echo esc_url(admin_url('admin.php?page=wpinv-subscriptions&id=' . $subscription->id)); ?>" title="<?php esc_attr_e('View or edit subscription', 'invoicing'); ?>" target="_blank"><?php echo $subscription->id; ?></a></p><?php } ?>
+        <p class="wpi-meta-row wpi-parent-id"><label><?php _e('Parent Invoice:', 'invoicing'); ?> </label><a href="<?php echo esc_url($parent_url); ?>"><?php echo $parent_id; ?></a></p>
         <?php
         }
     }
     
-    public static function payment_meta( $post ) {
+    public static function payment_meta($post) {
         global $wpi_mb_invoice;
 
-        $set_dateway = empty( $wpi_mb_invoice->gateway ) ? true : false;
-        if ( !$set_dateway && !$wpi_mb_invoice->get_meta( '_wpinv_checkout', true ) && !$wpi_mb_invoice->is_paid() && !$wpi_mb_invoice->is_refunded() ) {
+        $set_dateway = empty($wpi_mb_invoice->gateway) ? true : false;
+        if (!$set_dateway && !$wpi_mb_invoice->get_meta('_wpinv_checkout', true) && !$wpi_mb_invoice->is_paid() && !$wpi_mb_invoice->is_refunded()) {
             $set_dateway = true;
         }
         
         ?>
         <p class="wpi-meta-row">
-        <?php if ( $set_dateway ) { $gateways = wpinv_get_enabled_payment_gateways( true ); ?>
-            <label for="wpinv_gateway"><?php _e( 'Gateway:', 'invoicing' ) ; ?></label>
+        <?php if ($set_dateway) { $gateways = wpinv_get_enabled_payment_gateways(true); ?>
+            <label for="wpinv_gateway"><?php _e('Gateway:', 'invoicing'); ?></label>
             <select required="required" id="wpinv_gateway" class="wpi_select2" name="wpinv_gateway">
-                <?php foreach ( $gateways as $name => $gateway ) {
-                    if ( $wpi_mb_invoice->is_recurring() && !wpinv_gateway_support_subscription( $name ) ) {
+                <?php foreach ($gateways as $name => $gateway) {
+                    if ($wpi_mb_invoice->is_recurring() && !wpinv_gateway_support_subscription($name)) {
                         continue;
                     }
                     ?>
-                <option value="<?php echo $name;?>" <?php selected( $wpi_mb_invoice->gateway, $name );?>><?php echo !empty( $gateway['admin_label'] ) ? $gateway['admin_label'] : $gateway['checkout_label']; ?></option>
+                <option value="<?php echo $name; ?>" <?php selected($wpi_mb_invoice->gateway, $name); ?>><?php echo !empty($gateway['admin_label']) ? $gateway['admin_label'] : $gateway['checkout_label']; ?></option>
                 <?php } ?>
             </select>
         <?php } else { 
-            echo wp_sprintf( __( '<label>Gateway:</label> %s', 'invoicing' ), wpinv_get_gateway_admin_label( $wpi_mb_invoice->gateway ) );
+            echo wp_sprintf(__('<label>Gateway:</label> %s', 'invoicing'), wpinv_get_gateway_admin_label($wpi_mb_invoice->gateway));
         } ?>
         </p>
-        <?php if ( $key = $wpi_mb_invoice->get_key() ) { ?>
-        <p class="wpi-meta-row"><?php echo wp_sprintf( __( '<label>Key:</label> %s', 'invoicing' ), $key ); ?></p>
+        <?php if ($key = $wpi_mb_invoice->get_key()) { ?>
+        <p class="wpi-meta-row"><?php echo wp_sprintf(__('<label>Key:</label> %s', 'invoicing'), $key); ?></p>
         <?php } ?>
-        <?php if ( $wpi_mb_invoice->is_paid() || $wpi_mb_invoice->is_refunded() ) { ?>
-        <p class="wpi-meta-row"><?php echo wp_sprintf( __( '<label>Transaction ID:</label> %s', 'invoicing' ), wpinv_payment_link_transaction_id( $wpi_mb_invoice ) ); ?></p>
+        <?php if ($wpi_mb_invoice->is_paid() || $wpi_mb_invoice->is_refunded()) { ?>
+        <p class="wpi-meta-row"><?php echo wp_sprintf(__('<label>Transaction ID:</label> %s', 'invoicing'), wpinv_payment_link_transaction_id($wpi_mb_invoice)); ?></p>
         <?php } ?>
         <?php
     }

includes/class-wpinv-payment-form-elements.php

Spacing +593 added lines, -593 removed lines

@@ -1,6 +1,6 @@ 
 <?php
 
-if ( ! defined( 'ABSPATH' ) ) {
+if (!defined('ABSPATH')) {
     exit; // Exit if accessed directly
 }
 
@@ -13,19 +13,19 @@ 
 
     public function __construct() {
 
-        foreach( $this->get_elements() as $element ) {
+        foreach ($this->get_elements() as $element) {
             $element = $element['type'];
 
-            if ( method_exists( $this, "render_{$element}_template" ) ) {
-                add_action( 'wpinv_payment_form_render_element_template', array( $this, "render_{$element}_template" ), 10, 2 );
+            if (method_exists($this, "render_{$element}_template")) {
+                add_action('wpinv_payment_form_render_element_template', array($this, "render_{$element}_template"), 10, 2);
             }
 
-            if ( method_exists( $this, "edit_{$element}_template" ) ) {
-                add_action( 'wpinv_payment_form_edit_element_template', array( $this, "edit_{$element}_template" ), 10, 2 );
+            if (method_exists($this, "edit_{$element}_template")) {
+                add_action('wpinv_payment_form_edit_element_template', array($this, "edit_{$element}_template"), 10, 2);
             }
 
-            if ( method_exists( $this, "frontend_render_{$element}_template" ) ) {
-                add_action( "wpinv_frontend_render_payment_form_$element", array( $this, "frontend_render_{$element}_template" ), 10, 3 );
+            if (method_exists($this, "frontend_render_{$element}_template")) {
+                add_action("wpinv_frontend_render_payment_form_$element", array($this, "frontend_render_{$element}_template"), 10, 3);
             }
 
         }
@@ -37,7 +37,7 @@ 
      */
     public function get_elements() {
 
-        if ( ! empty( $this->elements ) ) {
+        if (!empty($this->elements)) {
             return $this->elements;
         }
 
@@ -45,28 +45,28 @@ 
 
             array(
                 'type'     => 'heading',
-                'name'     => __( 'Heading', 'invoicing' ),
+                'name'     => __('Heading', 'invoicing'),
                 'defaults' => array(
                     'level' => 'h2',
-                    'text'  => __( 'Heading', 'invoicing' ),
+                    'text'  => __('Heading', 'invoicing'),
                 )
             ),
 
             array(
                 'type' => 'paragraph',
-                'name' => __( 'Paragraph', 'invoicing' ),
+                'name' => __('Paragraph', 'invoicing'),
                 'defaults'  => array(
-                    'text'  => __( 'Paragraph text', 'invoicing' ),
+                    'text'  => __('Paragraph text', 'invoicing'),
                 )
             ),
 
             array( 
                 'type' => 'alert',
-                'name' => __( 'Alert', 'invoicing' ),
+                'name' => __('Alert', 'invoicing'),
                 'defaults'  => array(
                     'value'        => '',
                     'class'        => 'alert-warning',
-                    'text'         => __( 'Alert', 'invoicing' ),
+                    'text'         => __('Alert', 'invoicing'),
                     'dismissible'  => false,
                 )
             ),
@@ -82,11 +82,11 @@ 
 
             array(
                 'type' => 'text',
-                'name' => __( 'Text Input', 'invoicing' ),
+                'name' => __('Text Input', 'invoicing'),
                 'defaults'  => array(
-                    'placeholder'  => __( 'Enter some text', 'invoicing' ),
+                    'placeholder'  => __('Enter some text', 'invoicing'),
                     'value'        => '',
-                    'label'        => __( 'Field Label', 'invoicing' ),
+                    'label'        => __('Field Label', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -94,11 +94,11 @@ 
 
             array(
                 'type' => 'textarea',
-                'name' => __( 'Textarea', 'invoicing' ),
+                'name' => __('Textarea', 'invoicing'),
                 'defaults'         => array(
-                    'placeholder'  => __( 'Enter your text hear', 'invoicing' ),
+                    'placeholder'  => __('Enter your text hear', 'invoicing'),
                     'value'        => '',
-                    'label'        => __( 'Textarea Label', 'invoicing' ),
+                    'label'        => __('Textarea Label', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -106,27 +106,27 @@ 
 
             array(
                 'type' => 'select',
-                'name' => __( 'Dropdown', 'invoicing' ),
+                'name' => __('Dropdown', 'invoicing'),
                 'defaults'         => array(
-                    'placeholder'  => __( 'Select a value', 'invoicing' ),
+                    'placeholder'  => __('Select a value', 'invoicing'),
                     'value'        => '',
-                    'label'        => __( 'Dropdown Label', 'invoicing' ),
+                    'label'        => __('Dropdown Label', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                     'options'      => array(
-                        esc_attr__( 'Option One', 'invoicing' ),
-                        esc_attr__( 'Option Two', 'invoicing' ),
-                        esc_attr__( 'Option Three', 'invoicing' )
+                        esc_attr__('Option One', 'invoicing'),
+                        esc_attr__('Option Two', 'invoicing'),
+                        esc_attr__('Option Three', 'invoicing')
                     ),
                 )
             ),
 
             array(
                 'type' => 'checkbox',
-                'name' => __( 'Checkbox', 'invoicing' ),
+                'name' => __('Checkbox', 'invoicing'),
                 'defaults'         => array(
                     'value'        => '',
-                    'label'        => __( 'Checkbox Label', 'invoicing' ),
+                    'label'        => __('Checkbox Label', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -134,23 +134,23 @@ 
 
             array( 
                 'type' => 'radio',
-                'name' => __( 'Multiple Choice', 'invoicing' ),
+                'name' => __('Multiple Choice', 'invoicing'),
                 'defaults'     => array(
-                    'label'    => __( 'Select one choice', 'invoicing' ),
+                    'label'    => __('Select one choice', 'invoicing'),
                     'options'  => array(
-                        esc_attr__( 'Choice One', 'invoicing' ),
-                        esc_attr__( 'Choice Two', 'invoicing' ),
-                        esc_attr__( 'Choice Three', 'invoicing' )
+                        esc_attr__('Choice One', 'invoicing'),
+                        esc_attr__('Choice Two', 'invoicing'),
+                        esc_attr__('Choice Three', 'invoicing')
                     ),
                 )
             ),
 
             array( 
                 'type' => 'date',
-                'name' => __( 'Date', 'invoicing' ),
+                'name' => __('Date', 'invoicing'),
                 'defaults' => array(
                     'value'        => '',
-                    'label'        => __( 'Date', 'invoicing' ),
+                    'label'        => __('Date', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -158,10 +158,10 @@ 
 
             array( 
                 'type' => 'time',
-                'name' => __( 'Time', 'invoicing' ),
+                'name' => __('Time', 'invoicing'),
                 'defaults' => array(
                     'value'        => '',
-                    'label'        => __( 'Time', 'invoicing' ),
+                    'label'        => __('Time', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -169,11 +169,11 @@ 
 
             array( 
                 'type' => 'number',
-                'name' => __( 'Number', 'invoicing' ),
+                'name' => __('Number', 'invoicing'),
                 'defaults' => array(
                     'placeholder'  => '',
                     'value'        => '',
-                    'label'        => __( 'Number', 'invoicing' ),
+                    'label'        => __('Number', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -181,11 +181,11 @@ 
 
             array( 
                 'type' => 'website',
-                'name' => __( 'Website', 'invoicing' ),
+                'name' => __('Website', 'invoicing'),
                 'defaults' => array(
                     'placeholder'  => 'http://example.com',
                     'value'        => '',
-                    'label'        => __( 'Website', 'invoicing' ),
+                    'label'        => __('Website', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -193,11 +193,11 @@ 
 
             array( 
                 'type' => 'email',
-                'name' => __( 'Email', 'invoicing' ),
+                'name' => __('Email', 'invoicing'),
                 'defaults'  => array(
                     'placeholder'  => 'jon@snow.com',
                     'value'        => '',
-                    'label'        => __( 'Email Address', 'invoicing' ),
+                    'label'        => __('Email Address', 'invoicing'),
                     'description'  => '',
                     'required'     => false,
                 )
@@ -205,14 +205,14 @@ 
 
             array( 
                 'type' => 'address',
-                'name' => __( 'Address', 'invoicing' ),
+                'name' => __('Address', 'invoicing'),
                 'defaults'  => array(
 
                     'fields' => array(
                         array(
                             'placeholder'  => 'Jon',
                             'value'        => '',
-                            'label'        => __( 'First Name', 'invoicing' ),
+                            'label'        => __('First Name', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -222,7 +222,7 @@ 
                         array(
                             'placeholder'  => 'Snow',
                             'value'        => '',
-                            'label'        => __( 'Last Name', 'invoicing' ),
+                            'label'        => __('Last Name', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -232,7 +232,7 @@ 
                         array(
                             'placeholder'  => '',
                             'value'        => '',
-                            'label'        => __( 'Address', 'invoicing' ),
+                            'label'        => __('Address', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -242,7 +242,7 @@ 
                         array(
                             'placeholder'  => '',
                             'value'        => '',
-                            'label'        => __( 'City', 'invoicing' ),
+                            'label'        => __('City', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -250,9 +250,9 @@ 
                         ),
 
                         array(
-                            'placeholder'  => __( 'Select your country' ),
+                            'placeholder'  => __('Select your country'),
                             'value'        => '',
-                            'label'        => __( 'Country', 'invoicing' ),
+                            'label'        => __('Country', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -260,9 +260,9 @@ 
                         ),
 
                         array(
-                            'placeholder'  => __( 'Choose a state', 'invoicing' ),
+                            'placeholder'  => __('Choose a state', 'invoicing'),
                             'value'        => '',
-                            'label'        => __( 'State / Province', 'invoicing' ),
+                            'label'        => __('State / Province', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -272,7 +272,7 @@ 
                         array(
                             'placeholder'  => '',
                             'value'        => '',
-                            'label'        => __( 'ZIP / Postcode', 'invoicing' ),
+                            'label'        => __('ZIP / Postcode', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -282,7 +282,7 @@ 
                         array(
                             'placeholder'  => '',
                             'value'        => '',
-                            'label'        => __( 'Phone', 'invoicing' ),
+                            'label'        => __('Phone', 'invoicing'),
                             'description'  => '',
                             'required'     => false,
                             'visible'      => true,
@@ -294,11 +294,11 @@ 
 
             array( 
                 'type' => 'billing_email',
-                'name' => __( 'Billing Email', 'invoicing' ),
+                'name' => __('Billing Email', 'invoicing'),
                 'defaults'  => array(
                     'placeholder'  => 'jon@snow.com',
                     'value'        => '',
-                    'label'        => __( 'Billing Email', 'invoicing' ),
+                    'label'        => __('Billing Email', 'invoicing'),
                     'description'  => '',
                     'premade'      => true,
                 )
@@ -317,7 +317,7 @@ 
 
             array( 
                 'type' => 'items',
-                'name' => __( 'Items', 'invoicing' ),
+                'name' => __('Items', 'invoicing'),
                 'defaults'  => array(
                     'value'        => '',
                     'items_type'   => 'total',
@@ -328,25 +328,25 @@ 
 
             array( 
                 'type'       => 'pay_button',
-                'name'       => __( 'Payment Button', 'invoicing' ),
+                'name'       => __('Payment Button', 'invoicing'),
                 'defaults'   => array(
                     'value'        => '',
                     'class'        => 'btn-primary',
-                    'label'        => __( 'Pay Now »', 'invoicing' ),
-                    'description'  => __( 'By continuing with our payment, you are agreeing to our privacy policy and terms of service.', 'invoicing' ),
+                    'label'        => __('Pay Now »', 'invoicing'),
+                    'description'  => __('By continuing with our payment, you are agreeing to our privacy policy and terms of service.', 'invoicing'),
                     'premade'      => true,
                 )
             )
         );
 
-        $this->elements = apply_filters( 'wpinv_filter_core_payment_form_elements', $this->elements );
+        $this->elements = apply_filters('wpinv_filter_core_payment_form_elements', $this->elements);
         return $this->elements;
     }
 
     /**
      * Returns the restrict markup.
      */
-    public function get_restrict_markup( $field, $field_type ) {
+    public function get_restrict_markup($field, $field_type) {
         $restrict = "$field.type=='$field_type'";
         return "v-if=\"$restrict\"";
     }
@@ -354,15 +354,15 @@ 
     /**
      * Renders the title element template.
      */
-    public function render_heading_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'heading' );
+    public function render_heading_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'heading');
         echo "<component :is='$field.level' $restrict v-html='$field.text'></component>";
     }
 
     /**
      * Renders the title element on the frontend.
      */
-    public function frontend_render_heading_template( $field ) {
+    public function frontend_render_heading_template($field) {
         $tag = $field['level'];
         echo "<$tag>{$field['text']}</$tag>";
     }
@@ -370,10 +370,10 @@ 
     /**
      * Renders the edit title element template.
      */
-    public function edit_heading_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'heading' );
-        $label    = __( 'Heading', 'invoicing' );
-        $label2   = __( 'Select Heading Level', 'invoicing' );
+    public function edit_heading_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'heading');
+        $label    = __('Heading', 'invoicing');
+        $label2   = __('Select Heading Level', 'invoicing');
         $id       = $field . '.id + "_edit"';
         $id2      = $field . '.id + "_edit2"';
 
@@ -405,8 +405,8 @@ 
     /**
      * Renders a paragraph element template.
      */
-    public function render_paragraph_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'paragraph' );
+    public function render_paragraph_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'paragraph');
         $label    = "$field.text";
         echo "<p $restrict v-html='$label' style='font-size: 16px;'></p>";
     }
@@ -414,16 +414,16 @@ 
     /**
      * Renders the paragraph element on the frontend.
      */
-    public function frontend_render_paragraph_template( $field ) {
+    public function frontend_render_paragraph_template($field) {
         echo "<p>{$field['text']}</p>";
     }
 
     /**
      * Renders the edit paragraph element template.
      */
-    public function edit_paragraph_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'paragraph' );
-        $label    = __( 'Enter your text', 'invoicing' );
+    public function edit_paragraph_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'paragraph');
+        $label    = __('Enter your text', 'invoicing');
         $id       = $field . '.id + "_edit"';
         echo "
             <div $restrict>
@@ -439,8 +439,8 @@ 
     /**
      * Renders the text element template.
      */
-    public function render_text_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'text' );
+    public function render_text_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'text');
         $label    = "$field.label";
         echo "
             <div $restrict class='wpinv-payment-form-field-preview'>
@@ -455,23 +455,23 @@ 
     /**
      * Renders the text element on the frontend.
      */
-    public function frontend_render_text_template( $field ) {
+    public function frontend_render_text_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
-                'placeholder'=> esc_attr( $field['placeholder'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
+                'placeholder'=> esc_attr($field['placeholder']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -482,16 +482,16 @@ 
     /**
      * Renders the edit text element template.
      */
-    public function edit_text_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'text' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_text_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'text');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Placeholder text', 'invoicing' );
+        $label2   = __('Placeholder text', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -519,8 +519,8 @@ 
     /**
      * Renders the textarea element template.
      */
-    public function render_textarea_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'textarea' );
+    public function render_textarea_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'textarea');
         $label    = "$field.label";
         echo "
             <div $restrict class='wpinv-payment-form-field-preview'>
@@ -535,24 +535,24 @@ 
     /**
      * Renders the textarea element on the frontend.
      */
-    public function frontend_render_textarea_template( $field ) {
+    public function frontend_render_textarea_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->textarea(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
-                'placeholder'=> esc_attr( $field['placeholder'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
+                'placeholder'=> esc_attr($field['placeholder']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
                 'rows'       => 3,
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -563,16 +563,16 @@ 
     /**
      * Renders the edit textarea element template.
      */
-    public function edit_textarea_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'textarea' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_textarea_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'textarea');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Placeholder text', 'invoicing' );
+        $label2   = __('Placeholder text', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -600,8 +600,8 @@ 
     /**
      * Renders the select element template.
      */
-    public function render_select_template( $field ) {
-        $restrict    = $this->get_restrict_markup( $field, 'select' );
+    public function render_select_template($field) {
+        $restrict    = $this->get_restrict_markup($field, 'select');
         $label       = "$field.label";
         $placeholder = "$field.placeholder";
         $id          = $field . '.id';
@@ -621,24 +621,24 @@ 
     /**
      * Renders the select element on the frontend.
      */
-    public function frontend_render_select_template( $field ) {
+    public function frontend_render_select_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->select(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
-                'placeholder'=> esc_attr( $field['placeholder'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
+                'placeholder'=> esc_attr($field['placeholder']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
-                'options'    => array_combine( $field['options'], $field['options'] ),
+                'options'    => array_combine($field['options'], $field['options']),
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -649,18 +649,18 @@ 
     /**
      * Renders the edit select element template.
      */
-    public function edit_select_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'select' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_select_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'select');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Placeholder text', 'invoicing' );
+        $label2   = __('Placeholder text', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
-        $label6   = __( 'Available Options', 'invoicing' );
+        $label6   = __('Available Options', 'invoicing');
         echo "
             <div $restrict>
                 <div class='form-group'>
@@ -698,8 +698,8 @@ 
     /**
      * Renders the checkbox element template.
      */
-    public function render_checkbox_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'checkbox' );
+    public function render_checkbox_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'checkbox');
         $label    = "$field.label";
         echo "
             <div class='form-check' $restrict>
@@ -714,24 +714,24 @@ 
     /**
      * Renders the checkbox element on the frontend.
      */
-    public function frontend_render_checkbox_template( $field ) {
+    public function frontend_render_checkbox_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
-                'value'      => esc_attr__( 'Yes', 'invoicing' ),
+                'value'      => esc_attr__('Yes', 'invoicing'),
                 'type'       => 'checkbox',
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -742,14 +742,14 @@ 
     /**
      * Renders the edit checkbox element template.
      */
-    public function edit_checkbox_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'checkbox' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_checkbox_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'checkbox');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Help text', 'invoicing' );
-        $label3   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label2   = __('Help text', 'invoicing');
+        $label3   = esc_attr__('Add some help text for this field', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label4   = __( 'Is this field required?', 'invoicing' );
+        $label4   = __('Is this field required?', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
         echo "
             <div $restrict>
@@ -773,8 +773,8 @@ 
     /**
      * Renders the radio element template.
      */
-    public function render_radio_template( $field ) {
-        $restrict    = $this->get_restrict_markup( $field, 'radio' );
+    public function render_radio_template($field) {
+        $restrict    = $this->get_restrict_markup($field, 'radio');
         $label       = "$field.label";
         $id          = $field . '.id';
         echo "
@@ -793,20 +793,20 @@ 
     /**
      * Renders the radio element on the frontend.
      */
-    public function frontend_render_radio_template( $field ) {
+    public function frontend_render_radio_template($field) {
         
         echo "<div class='form-group'>";
 
-        if ( ! empty( $field['label'] ) ) {
-            $label = wp_kses_post( $field['label'] );
+        if (!empty($field['label'])) {
+            $label = wp_kses_post($field['label']);
             echo "<legend class='col-form-label'>$label</legend>";
         }
 
-        foreach( $field['options'] as $index => $option ) {
+        foreach ($field['options'] as $index => $option) {
             $id    = $field['id'] . $index;
             $name  = $field['id'];
-            $value = esc_attr( $option );
-            $label = wp_kses_post( $option );
+            $value = esc_attr($option);
+            $label = wp_kses_post($option);
 
             echo "
                 <div class='form-check'>
@@ -816,8 +816,8 @@ 
             ";
         }
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -828,16 +828,16 @@ 
     /**
      * Renders the edit radio element template.
      */
-    public function edit_radio_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'radio' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_radio_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'radio');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Help text', 'invoicing' );
-        $label3   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label2   = __('Help text', 'invoicing');
+        $label3   = esc_attr__('Add some help text for this field', 'invoicing');
         $id2      = $field . '.id + "_edit3"';
-        $label4   = __( 'Is this field required?', 'invoicing' );
+        $label4   = __('Is this field required?', 'invoicing');
         $id3      = $field . '.id + "_edit4"';
-        $label5   = __( 'Available Options', 'invoicing' );
+        $label5   = __('Available Options', 'invoicing');
         echo "
             <div $restrict>
                 <div class='form-group'>
@@ -871,8 +871,8 @@ 
     /**
      * Renders the address element template.
      */
-    public function render_address_template( $field ) {
-        $restrict    = $this->get_restrict_markup( $field, 'address' );
+    public function render_address_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'address');
 
         echo "
             <div class='wpinv-address-wrapper' $restrict>
@@ -894,55 +894,55 @@ 
     /**
      * Renders the address element on the frontend.
      */
-    public function frontend_render_address_template( $field ) {
+    public function frontend_render_address_template($field) {
         
         echo "<div class='wpinv-address-fields'>";
 
-        foreach( $field['fields'] as $address_field ) {
+        foreach ($field['fields'] as $address_field) {
 
-            if ( empty( $address_field['visible'] ) ) {
+            if (empty($address_field['visible'])) {
                 continue;
             }
 
-            $class = esc_attr( $address_field['name'] );
+            $class = esc_attr($address_field['name']);
             echo "<div class='form-group $class'>";
 
             $label = $address_field['label'];
 
-            if ( ! empty( $address_field['required'] ) ) {
+            if (!empty($address_field['required'])) {
                 $label .= "<span class='text-danger'> *</span>";
             }
 
-            if ( 'wpinv_country' == $address_field['name'] ) {
+            if ('wpinv_country' == $address_field['name']) {
 
-                echo aui()->select( array(
+                echo aui()->select(array(
                     'options'          => wpinv_get_country_list(),
-                    'name'             => esc_attr( $address_field['name'] ),
-                    'id'               => esc_attr( $address_field['name'] ),
+                    'name'             => esc_attr($address_field['name']),
+                    'id'               => esc_attr($address_field['name']),
                     'value'            => wpinv_get_default_country(),
-                    'placeholder'      => esc_attr( $address_field['placeholder'] ),
+                    'placeholder'      => esc_attr($address_field['placeholder']),
                     'required'         => (bool) $address_field['required'],
                     'no_wrap'          => true,
-                    'label'            => wp_kses_post( $label ),
+                    'label'            => wp_kses_post($label),
                     'select2'          => false,
                 ));
     
-            } else if ( 'wpinv_state' == $address_field['name'] ) {
+            } else if ('wpinv_state' == $address_field['name']) {
 
-                $states = wpinv_get_country_states( wpinv_get_default_country() );
+                $states = wpinv_get_country_states(wpinv_get_default_country());
                 $state  = wpinv_get_default_state();
 
-                if ( ! empty( $states ) ) {
+                if (!empty($states)) {
 
-                    echo aui()->select( array(
+                    echo aui()->select(array(
                         'options'          => $states,
-                        'name'             => esc_attr( $address_field['name'] ),
-                        'id'               => esc_attr( $address_field['name'] ),
+                        'name'             => esc_attr($address_field['name']),
+                        'id'               => esc_attr($address_field['name']),
                         'value'            => $state,
-                        'placeholder'      => esc_attr( $address_field['placeholder'] ),
+                        'placeholder'      => esc_attr($address_field['placeholder']),
                         'required'         => (bool) $address_field['required'],
                         'no_wrap'          => true,
-                        'label'            => wp_kses_post( $label ),
+                        'label'            => wp_kses_post($label),
                         'select2'          => false,
                     ));
 
@@ -950,10 +950,10 @@ 
 
                     echo aui()->input(
                         array(
-                            'name'       => esc_attr( $address_field['name'] ),
-                            'id'         => esc_attr( $address_field['name'] ),
+                            'name'       => esc_attr($address_field['name']),
+                            'id'         => esc_attr($address_field['name']),
                             'required'   => (bool) $address_field['required'],
-                            'label'      => wp_kses_post( $label ),
+                            'label'      => wp_kses_post($label),
                             'no_wrap'    => true,
                             'type'       => 'text',
                         )
@@ -965,12 +965,12 @@ 
 
                 echo aui()->input(
                     array(
-                        'name'       => esc_attr( $address_field['name'] ),
-                        'id'         => esc_attr( $address_field['name'] ),
+                        'name'       => esc_attr($address_field['name']),
+                        'id'         => esc_attr($address_field['name']),
                         'required'   => (bool) $address_field['required'],
-                        'label'      => wp_kses_post( $label ),
+                        'label'      => wp_kses_post($label),
                         'no_wrap'    => true,
-                        'placeholder' => esc_attr( $address_field['placeholder'] ),
+                        'placeholder' => esc_attr($address_field['placeholder']),
                         'type'       => 'text',
                     )
                 );
@@ -978,8 +978,8 @@ 
             }
             
 
-            if ( ! empty( $address_field['description'] ) ) {
-                $description = wp_kses_post( $address_field['description'] );
+            if (!empty($address_field['description'])) {
+                $description = wp_kses_post($address_field['description']);
                 echo "<small class='form-text text-muted'>$description</small>";
             }
     
@@ -994,13 +994,13 @@ 
     /**
      * Renders the edit address element template.
      */
-    public function edit_address_template( $field ) {
-        $restrict  = $this->get_restrict_markup( $field, 'address' );
-        $label     = __( 'Field Label', 'invoicing' );
-        $label2    = __( 'Placeholder', 'invoicing' );
-        $label3    = __( 'Description', 'invoicing' );
-        $label4    = __( 'Is required', 'invoicing' );
-        $label5    = __( 'Is visible', 'invoicing' );
+    public function edit_address_template($field) {
+        $restrict  = $this->get_restrict_markup($field, 'address');
+        $label     = __('Field Label', 'invoicing');
+        $label2    = __('Placeholder', 'invoicing');
+        $label3    = __('Description', 'invoicing');
+        $label4    = __('Is required', 'invoicing');
+        $label5    = __('Is visible', 'invoicing');
         $id        = $field . '.id + "_edit_label"';
         $id2       = $field . '.id + "_edit_placeholder"';
         $id3       = $field . '.id + "_edit_description"';
@@ -1068,8 +1068,8 @@ 
     /**
      * Renders the email element template.
      */
-    public function render_email_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'email' );
+    public function render_email_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'email');
         $label    = "$field.label";
         echo "
             <div $restrict class='wpinv-payment-form-field-preview'>
@@ -1084,8 +1084,8 @@ 
     /**
      * Renders the billing_email element template.
      */
-    public function render_billing_email_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'billing_email' );
+    public function render_billing_email_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'billing_email');
         $label    = "$field.label";
         echo "
             <div $restrict>
@@ -1099,24 +1099,24 @@ 
     /**
      * Renders the email element on the frontend.
      */
-    public function frontend_render_email_template( $field ) {
+    public function frontend_render_email_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
-                'placeholder' => esc_attr( $field['placeholder'] ),
+                'placeholder' => esc_attr($field['placeholder']),
                 'type'       => 'email',
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -1127,30 +1127,30 @@ 
     /**
      * Renders the billing email element on the frontend.
      */
-    public function frontend_render_billing_email_template( $field ) {
+    public function frontend_render_billing_email_template($field) {
         
         echo "<div class='form-group'>";
         $value = '';
 
-        if ( is_user_logged_in() ) {
+        if (is_user_logged_in()) {
             $user  = wp_get_current_user();
-            $value = sanitize_email( $user->user_email );
+            $value = sanitize_email($user->user_email);
         }
         echo aui()->input(
             array(
                 'name'       => 'billing_email',
                 'value'      => $value,
-                'id'         => esc_attr( $field['id'] ),
+                'id'         => esc_attr($field['id']),
                 'required'   => true,
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
-                'placeholder' => esc_attr( $field['placeholder'] ),
+                'placeholder' => esc_attr($field['placeholder']),
                 'type'       => 'email',
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -1161,16 +1161,16 @@ 
     /**
      * Renders the edit email element template.
      */
-    public function edit_email_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'email' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_email_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'email');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Placeholder text', 'invoicing' );
+        $label2   = __('Placeholder text', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -1198,16 +1198,16 @@ 
     /**
      * Renders the edit billing_email element template.
      */
-    public function edit_billing_email_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'billing_email' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_billing_email_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'billing_email');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Placeholder text', 'invoicing' );
+        $label2   = __('Placeholder text', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -1231,8 +1231,8 @@ 
     /**
      * Renders the website element template.
      */
-    public function render_website_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'website' );
+    public function render_website_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'website');
         $label    = "$field.label";
         echo "
             <div $restrict class='wpinv-payment-form-field-preview'>
@@ -1247,24 +1247,24 @@ 
     /**
      * Renders the website element on the frontend.
      */
-    public function frontend_render_website_template( $field ) {
+    public function frontend_render_website_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
-                'placeholder' => esc_attr( $field['placeholder'] ),
+                'placeholder' => esc_attr($field['placeholder']),
                 'type'       => 'url',
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -1275,16 +1275,16 @@ 
     /**
      * Renders the edit website element template.
      */
-    public function edit_website_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'website' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_website_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'website');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Placeholder text', 'invoicing' );
+        $label2   = __('Placeholder text', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -1312,8 +1312,8 @@ 
     /**
      * Renders the date element template.
      */
-    public function render_date_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'date' );
+    public function render_date_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'date');
         $label    = "$field.label";
         echo "
             <div $restrict class='wpinv-payment-form-field-preview'>
@@ -1328,23 +1328,23 @@ 
     /**
      * Renders the date element on the frontend.
      */
-    public function frontend_render_date_template( $field ) {
+    public function frontend_render_date_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
                 'type'       => 'date',
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -1355,14 +1355,14 @@ 
     /**
      * Renders the edit date element template.
      */
-    public function edit_date_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'date' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_date_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'date');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -1386,8 +1386,8 @@ 
     /**
      * Renders the time element template.
      */
-    public function render_time_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'time' );
+    public function render_time_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'time');
         $label    = "$field.label";
         echo "
             <div $restrict class='wpinv-payment-form-field-preview'>
@@ -1402,23 +1402,23 @@ 
     /**
      * Renders the time element on the frontend.
      */
-    public function frontend_render_time_template( $field ) {
+    public function frontend_render_time_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
+                'label'      => wp_kses_post($field['label']),
                 'no_wrap'    => true,
                 'type'       => 'time',
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -1429,14 +1429,14 @@ 
     /**
      * Renders the edit time element template.
      */
-    public function edit_time_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'time' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_time_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'time');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -1460,8 +1460,8 @@ 
     /**
      * Renders the number element template.
      */
-    public function render_number_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'number' );
+    public function render_number_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'number');
         $label    = "$field.label";
         echo "
             <div $restrict class='wpinv-payment-form-field-preview'>
@@ -1476,24 +1476,24 @@ 
     /**
      * Renders the number element on the frontend.
      */
-    public function frontend_render_number_template( $field ) {
+    public function frontend_render_number_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
                 'required'   => (bool) $field['required'],
-                'label'      => wp_kses_post( $field['label'] ),
-                'placeholder' => esc_attr( $field['placeholder'] ),
+                'label'      => wp_kses_post($field['label']),
+                'placeholder' => esc_attr($field['placeholder']),
                 'no_wrap'    => true,
                 'type'       => 'number',
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -1504,16 +1504,16 @@ 
     /**
      * Renders the edit number element template.
      */
-    public function edit_number_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'number' );
-        $label    = __( 'Field Label', 'invoicing' );
+    public function edit_number_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'number');
+        $label    = __('Field Label', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Placeholder text', 'invoicing' );
+        $label2   = __('Placeholder text', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label3   = __( 'Help text', 'invoicing' );
-        $label4   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label3   = __('Help text', 'invoicing');
+        $label4   = esc_attr__('Add some help text for this field', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
-        $label5   = __( 'Is this field required?', 'invoicing' );
+        $label5   = __('Is this field required?', 'invoicing');
         $id4      = $field . '.id + "_edit4"';
         echo "
             <div $restrict>
@@ -1541,23 +1541,23 @@ 
     /**
      * Renders the separator element template.
      */
-    public function render_separator_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'separator' );
+    public function render_separator_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'separator');
         echo "<hr class='featurette-divider mt-0 mb-2' $restrict>";
     }
 
     /**
      * Renders the separator element on the frontend.
      */
-    public function frontend_render_separator_template( $field ) {
+    public function frontend_render_separator_template($field) {
         echo '<hr class="featurette-divider mt-0 mb-2" />';
     }
 
     /**
      * Renders the pay button element template.
      */
-    public function render_pay_button_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'pay_button' );
+    public function render_pay_button_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'pay_button');
         $label    = "$field.label";
         echo "
             <div $restrict>
@@ -1570,28 +1570,28 @@ 
     /**
      * Renders the pay_button element on the frontend.
      */
-    public function frontend_render_pay_button_template( $field ) {
+    public function frontend_render_pay_button_template($field) {
 
         echo "<div class='mt-4 mb-4'>";
-            do_action( 'wpinv_payment_mode_select' );
+            do_action('wpinv_payment_mode_select');
         echo "</div>";
 
         echo "<div class='form-group'>";
 
-        $class = 'wpinv-payment-form-submit btn btn-block submit-button ' . sanitize_html_class( $field['class'] );
+        $class = 'wpinv-payment-form-submit btn btn-block submit-button ' . sanitize_html_class($field['class']);
         echo aui()->input(
             array(
-                'name'       => esc_attr( $field['id'] ),
-                'id'         => esc_attr( $field['id'] ),
-                'value'      => esc_attr( $field['label'] ),
+                'name'       => esc_attr($field['id']),
+                'id'         => esc_attr($field['id']),
+                'value'      => esc_attr($field['label']),
                 'no_wrap'    => true,
                 'type'       => 'submit',
                 'class'      => $class,
             )
         );
 
-        if ( ! empty( $field['description'] ) ) {
-            $description = wp_kses_post( $field['description'] );
+        if (!empty($field['description'])) {
+            $description = wp_kses_post($field['description']);
             echo "<small class='form-text text-muted'>$description</small>";
         }
 
@@ -1602,14 +1602,14 @@ 
     /**
      * Renders the pay button element template.
      */
-    public function edit_pay_button_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'pay_button' );
-        $label    = __( 'Button Text', 'invoicing' );
+    public function edit_pay_button_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'pay_button');
+        $label    = __('Button Text', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label2   = __( 'Help text', 'invoicing' );
-        $label3   = esc_attr__( 'Add some help text for this field', 'invoicing' );
+        $label2   = __('Help text', 'invoicing');
+        $label3   = esc_attr__('Add some help text for this field', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label4   = esc_attr__( 'Button Type', 'invoicing' );
+        $label4   = esc_attr__('Button Type', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
         echo "
             <div $restrict>
@@ -1625,15 +1625,15 @@ 
                     <label :for='$id3'>$label4</label>
 
                     <select class='form-control custom-select' :id='$id3' v-model='$field.class'>
-                        <option value='btn-primary'>"   . __( 'Primary', 'invoicing' ) ."</option>
-                        <option value='btn-secondary'>" . __( 'Secondary', 'invoicing' ) ."</option>
-                        <option value='btn-success'>"   . __( 'Success', 'invoicing' ) ."</option>
-                        <option value='btn-danger'>"    . __( 'Danger', 'invoicing' ) ."</option>
-                        <option value='btn-warning'>"   . __( 'Warning', 'invoicing' ) ."</option>
-                        <option value='btn-info'>"      . __( 'Info', 'invoicing' ) ."</option>
-                        <option value='btn-light'>"     . __( 'Light', 'invoicing' ) ."</option>
-                        <option value='btn-dark'>"      . __( 'Dark', 'invoicing' ) ."</option>
-                        <option value='btn-link'>"      . __( 'Link', 'invoicing' ) ."</option>
+                        <option value='btn-primary'>" . __('Primary', 'invoicing') . "</option>
+                        <option value='btn-secondary'>" . __('Secondary', 'invoicing') . "</option>
+                        <option value='btn-success'>"   . __('Success', 'invoicing') . "</option>
+                        <option value='btn-danger'>"    . __('Danger', 'invoicing') . "</option>
+                        <option value='btn-warning'>"   . __('Warning', 'invoicing') . "</option>
+                        <option value='btn-info'>"      . __('Info', 'invoicing') . "</option>
+                        <option value='btn-light'>"     . __('Light', 'invoicing') . "</option>
+                        <option value='btn-dark'>"      . __('Dark', 'invoicing') . "</option>
+                        <option value='btn-link'>"      . __('Link', 'invoicing') . "</option>
                     </select>
                 </div>
             </div>
@@ -1644,8 +1644,8 @@ 
     /**
      * Renders the alert element template.
      */
-    public function render_alert_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'alert' );
+    public function render_alert_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'alert');
         $text     = "$field.text";
         echo "
             <div $restrict class='alert' :class='$field.class' role='alert'>
@@ -1660,15 +1660,15 @@ 
     /**
      * Renders the alert element on the frontend.
      */
-    public function frontend_render_alert_template( $field ) {
+    public function frontend_render_alert_template($field) {
         
         echo "<div class='form-group'>";
 
         echo aui()->alert(
             array(
-                'content'     => wp_kses_post( $field['text'] ),
+                'content'     => wp_kses_post($field['text']),
                 'dismissible' => $field['dismissible'],
-                'type'        => str_replace( 'alert-', '', $field['class'] ),
+                'type'        => str_replace('alert-', '', $field['class']),
             )
         );
 
@@ -1679,14 +1679,14 @@ 
     /**
      * Renders the alert element template.
      */
-    public function edit_alert_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'alert' );
-        $label    = __( 'Alert Text', 'invoicing' );
-        $label2   = esc_attr__( 'Enter your alert text here', 'invoicing' );
+    public function edit_alert_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'alert');
+        $label    = __('Alert Text', 'invoicing');
+        $label2   = esc_attr__('Enter your alert text here', 'invoicing');
         $id       = $field . '.id + "_edit"';
-        $label3   = __( 'Is Dismissible?', 'invoicing' );
+        $label3   = __('Is Dismissible?', 'invoicing');
         $id2      = $field . '.id + "_edit2"';
-        $label4   = esc_attr__( 'Alert Type', 'invoicing' );
+        $label4   = esc_attr__('Alert Type', 'invoicing');
         $id3      = $field . '.id + "_edit3"';
         echo "
             <div $restrict>
@@ -1702,14 +1702,14 @@ 
                     <label :for='$id3'>$label4</label>
 
                     <select class='form-control custom-select' :id='$id3' v-model='$field.class'>
-                        <option value='alert-primary'>"   . __( 'Primary', 'invoicing' ) ."</option>
-                        <option value='alert-secondary'>" . __( 'Secondary', 'invoicing' ) ."</option>
-                        <option value='alert-success'>"   . __( 'Success', 'invoicing' ) ."</option>
-                        <option value='alert-danger'>"    . __( 'Danger', 'invoicing' ) ."</option>
-                        <option value='alert-warning'>"   . __( 'Warning', 'invoicing' ) ."</option>
-                        <option value='alert-info'>"      . __( 'Info', 'invoicing' ) ."</option>
-                        <option value='alert-light'>"     . __( 'Light', 'invoicing' ) ."</option>
-                        <option value='alert-dark'>"      . __( 'Dark', 'invoicing' ) ."</option>
+                        <option value='alert-primary'>" . __('Primary', 'invoicing') . "</option>
+                        <option value='alert-secondary'>" . __('Secondary', 'invoicing') . "</option>
+                        <option value='alert-success'>"   . __('Success', 'invoicing') . "</option>
+                        <option value='alert-danger'>"    . __('Danger', 'invoicing') . "</option>
+                        <option value='alert-warning'>"   . __('Warning', 'invoicing') . "</option>
+                        <option value='alert-info'>"      . __('Info', 'invoicing') . "</option>
+                        <option value='alert-light'>"     . __('Light', 'invoicing') . "</option>
+                        <option value='alert-dark'>"      . __('Dark', 'invoicing') . "</option>
                     </select>
                 </div>
             </div>
@@ -1720,8 +1720,8 @@ 
     /**
      * Renders the discount element template.
      */
-    public function render_discount_template( $field ) {
-        $restrict  = $this->get_restrict_markup( $field, 'discount' );
+    public function render_discount_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'discount');
         ?>
 
             <div <?php echo $restrict; ?> class="discount_field  border rounded p-3">
@@ -1738,13 +1738,13 @@ 
     /**
      * Renders the discount element on the frontend.
      */
-    public function frontend_render_discount_template( $field ) {
+    public function frontend_render_discount_template($field) {
         
-        $placeholder = esc_attr( $field['input_label'] );
-        $label       = sanitize_text_field( $field['button_label'] );
+        $placeholder = esc_attr($field['input_label']);
+        $label       = sanitize_text_field($field['button_label']);
         $description = '';
 
-        if ( ! empty( $field['description'] ) ) {
+        if (!empty($field['description'])) {
             $description = "<small class='form-text text-muted'>{$field['description']}</small>";
         }
 ?>
@@ -1765,12 +1765,12 @@ 
     /**
      * Renders the discount element template.
      */
-    public function edit_discount_template( $field ) {
-        $restrict = $this->get_restrict_markup( $field, 'discount' );
-        $label    = __( 'Discount Input Placeholder', 'invoicing' );
-        $label2   = __( 'Help Text', 'invoicing' );
-        $label3   = esc_attr__( 'Add some help text for this field', 'invoicing' );
-        $label4   = __( 'Button Text', 'invoicing' );
+    public function edit_discount_template($field) {
+        $restrict = $this->get_restrict_markup($field, 'discount');
+        $label    = __('Discount Input Placeholder', 'invoicing');
+        $label2   = __('Help Text', 'invoicing');
+        $label3   = esc_attr__('Add some help text for this field', 'invoicing');
+        $label4   = __('Button Text', 'invoicing');
         $id       = $field . '.id + "_edit"';
         $id2      = $field . '.id + "_edit2"';
         $id3      = $field . '.id + "_edit3"';
@@ -1799,11 +1799,11 @@ 
     /**
      * Renders the items element template.
      */
-    public function render_items_template( $field ) {
-        $restrict  = $this->get_restrict_markup( $field, 'items' );
-        $label     = __( 'Item totals will appear here. Click to set items.', 'invoicing' );
-        $label2    = __( 'Your form allows customers to buy several recurring items. This is not supported and will lead to unexpected behaviour.', 'invoicing' );
-        $label2   .= ' ' . __( 'To prevent this, limit customers to selecting a single item.', 'invoicing' );
+    public function render_items_template($field) {
+        $restrict  = $this->get_restrict_markup($field, 'items');
+        $label     = __('Item totals will appear here. Click to set items.', 'invoicing');
+        $label2    = __('Your form allows customers to buy several recurring items. This is not supported and will lead to unexpected behaviour.', 'invoicing');
+        $label2   .= ' ' . __('To prevent this, limit customers to selecting a single item.', 'invoicing');
         echo "
             <div $restrict class='item_totals text-center'>
                 <div v-if='canCheckoutSeveralSubscriptions($field)' class='p-4 bg-danger text-light'>$label2</div>
@@ -1815,12 +1815,12 @@ 
     /**
      * Renders the items element on the frontend.
      */
-    public function frontend_render_items_template( $field, $items ) {
+    public function frontend_render_items_template($field, $items) {
         
         echo "<div class='form-group item_totals'>";
         
-        $id = esc_attr( $field['id'] );
-        if ( 'total' == $field[ 'items_type' ] ) {
+        $id = esc_attr($field['id']);
+        if ('total' == $field['items_type']) {
             $total     = 0;
             $tax       = 0;
             $sub_total = 0;
@@ -1829,16 +1829,16 @@ 
             <div class="border item_totals_type_total">
 
                 <?php
-                    foreach( $items as $item ) {
+                    foreach ($items as $item) {
 
-                        $amount = floatval( $item['price'] );
+                        $amount = floatval($item['price']);
 
-                        if ( wpinv_use_taxes() ) {
+                        if (wpinv_use_taxes()) {
 
-                            $rate = wpinv_get_tax_rate( wpinv_get_default_country(), false, (int) $item['id'] );
+                            $rate = wpinv_get_tax_rate(wpinv_get_default_country(), false, (int) $item['id']);
 
-                            if ( wpinv_prices_include_tax() ) {
-                                $pre_tax  = ( $amount - $amount * $rate * 0.01 );
+                            if (wpinv_prices_include_tax()) {
+                                $pre_tax  = ($amount - $amount * $rate * 0.01);
                                 $item_tax = $amount - $pre_tax;
                             } else {
                                 $pre_tax  = $amount;
@@ -1850,27 +1850,27 @@ 
                             $total     = $sub_total + $tax;
 
                         } else {
-                            $total  = $total + $amount;
+                            $total = $total + $amount;
                         }
 
                         $class  = 'col-8';
                         $class2 = '';
 
-                        if ( ! empty( $item['allow_quantities'] ) ) {
+                        if (!empty($item['allow_quantities'])) {
                             $class = 'col-6 pt-2';
                             $class2 = 'pt-2';
                         }
 
-                        if ( ! empty( $item['custom_price'] ) ) {
+                        if (!empty($item['custom_price'])) {
                             $class .= ' pt-2';
                         }
             
                 ?>
                     <div  class="item_totals_item">
                         <div class='row pl-2 pr-2 pt-2'>
-                            <div class='<?php echo $class; ?>'><?php echo esc_html( $item['title'] ) ?></div>
+                            <div class='<?php echo $class; ?>'><?php echo esc_html($item['title']) ?></div>
 
-                            <?php  if ( ! empty( $item['allow_quantities'] ) ) { ?>
+                            <?php  if (!empty($item['allow_quantities'])) { ?>
 
                                 <div class='col-2'>
                                     <input name='wpinv-item-<?php echo (int) $item['id']; ?>-quantity' type='number' class='form-control wpinv-item-quantity-input pr-1' value='1' min='1' required>
@@ -1878,11 +1878,11 @@ 
 
                             <?php } else { ?>
                                 <input type='hidden' class='wpinv-item-quantity-input' value='1'>
-                            <?php } if ( empty( $item['custom_price'] ) ) { ?>
+                            <?php } if (empty($item['custom_price'])) { ?>
 
                                 <div class='col-4 <?php echo $class2; ?>'>
-                                    <?php echo wpinv_price( wpinv_format_amount( $item['price'] ) ) ?>
-                                    <input name='wpinv-items[<?php echo (int) $item['id']; ?>]' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval( $item['price'] ); ?>'>
+                                    <?php echo wpinv_price(wpinv_format_amount($item['price'])) ?>
+                                    <input name='wpinv-items[<?php echo (int) $item['id']; ?>]' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval($item['price']); ?>'>
                                 </div>
 
                             <?php } else {?>
@@ -1890,15 +1890,15 @@ 
                                 <div class='col-4'>
                                     <div class='input-group'>
 
-                                        <?php if ( 'left' == wpinv_currency_position() ) { ?>
+                                        <?php if ('left' == wpinv_currency_position()) { ?>
                                             <div class='input-group-prepend'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
                                         <?php } ?>
 
-                                        <input type='number' name='wpinv-items[<?php echo (int) $item['id']; ?>]' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval( $item['price'] ); ?>' value='<?php echo floatval( $item['price'] ); ?>' min='<?php echo intval( $item['minimum_price'] ); ?>'>
+                                        <input type='number' name='wpinv-items[<?php echo (int) $item['id']; ?>]' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval($item['price']); ?>' value='<?php echo floatval($item['price']); ?>' min='<?php echo intval($item['minimum_price']); ?>'>
                                     
-                                        <?php if ( 'left' != wpinv_currency_position() ) { ?>
+                                        <?php if ('left' != wpinv_currency_position()) { ?>
                                             <div class='input-group-append'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
@@ -1909,28 +1909,28 @@ 
                             <?php } ?>
 
                         </div>
-                        <?php if ( ! empty( $item['description'] )) { ?>
-                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post( $item['description'] ); ?></small>
+                        <?php if (!empty($item['description'])) { ?>
+                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post($item['description']); ?></small>
                         <?php } ?>
                     </div>
                 <?php } ?>
 
                 <div class='mt-4 border-top item_totals_total p-2'>
 
-                    <?php if ( wpinv_use_taxes() ) { ?>
+                    <?php if (wpinv_use_taxes()) { ?>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Sub Total', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price( wpinv_format_amount( $sub_total ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Sub Total', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price(wpinv_format_amount($sub_total)) ?></strong></div>
                         </div>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Tax', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price( wpinv_format_amount( $tax ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Tax', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price(wpinv_format_amount($tax)) ?></strong></div>
                         </div>
                     <?php } ?>
 
                     <div class='row'>
-                        <div class='col-8'><strong class='mr-5'><?php _e( 'Total', 'invoicing' ); ?></strong></div>
-                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price( wpinv_format_amount( $total ) ) ?></strong></div>
+                        <div class='col-8'><strong class='mr-5'><?php _e('Total', 'invoicing'); ?></strong></div>
+                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price(wpinv_format_amount($total)) ?></strong></div>
                     </div>
 
                 </div>
@@ -1938,22 +1938,22 @@ 
             </div>
         <?php } ?>
 
-        <?php if ( 'radio' == $field[ 'items_type' ] ) { ?>
+        <?php if ('radio' == $field['items_type']) { ?>
             <div class="item_totals_type_radio">
 
                 <?php
-                    foreach( $items as $index => $item ) {
+                    foreach ($items as $index => $item) {
 
-                        if ( ! empty( $item['required'] ) ) {
+                        if (!empty($item['required'])) {
                             continue;
                         }
                 ?>
                     <div  class="form-check">
-                        <input class='form-check-input wpinv-items-selector' <?php checked( ! isset( $selected_radio_item ) ); $selected_radio_item = 1; ?> type='radio' value='<?php echo $item['id']; ?>' id='<?php echo $id . $index; ?>' name='wpinv-payment-form-selected-item'>
-                        <label class='form-check-label' for='<?php echo $id . $index; ?>'><?php echo sanitize_text_field( $item['title'] ); ?>&nbsp;<strong><?php echo wpinv_price( wpinv_format_amount( (float) sanitize_text_field(  $item['price'] ) ) ); ?></strong></label>
+                        <input class='form-check-input wpinv-items-selector' <?php checked(!isset($selected_radio_item)); $selected_radio_item = 1; ?> type='radio' value='<?php echo $item['id']; ?>' id='<?php echo $id . $index; ?>' name='wpinv-payment-form-selected-item'>
+                        <label class='form-check-label' for='<?php echo $id . $index; ?>'><?php echo sanitize_text_field($item['title']); ?>&nbsp;<strong><?php echo wpinv_price(wpinv_format_amount((float) sanitize_text_field($item['price']))); ?></strong></label>
                     </div>
-                    <?php if ( ! empty( $item['description'] )) { ?>
-                        <small class='form-text text-muted pl-4 pr-2 m-0'><?php echo wp_kses_post( $item['description'] ); ?></small>
+                    <?php if (!empty($item['description'])) { ?>
+                        <small class='form-text text-muted pl-4 pr-2 m-0'><?php echo wp_kses_post($item['description']); ?></small>
                     <?php } ?>
                 <?php } ?>
 
@@ -1965,32 +1965,32 @@ 
                         $tax       = 0;
                         $sub_total = 0;
 
-                        foreach ( $items as $item ) {
+                        foreach ($items as $item) {
 
                             $class  = 'col-8';
                             $class2 = '';
 
-                            if ( ! empty( $item['allow_quantities'] ) ) {
+                            if (!empty($item['allow_quantities'])) {
                                 $class = 'col-6 pt-2';
                                 $class2 = 'pt-2';
                             }
 
-                            if ( ! empty( $item['custom_price'] ) ) {
+                            if (!empty($item['custom_price'])) {
                                 $class .= ' pt-2';
                             }
 
                             $class3 = 'd-none';
                             $name   = '';
-                            if ( ! empty( $item['required'] ) || ! isset( $totals_selected_radio_item ) ) {
+                            if (!empty($item['required']) || !isset($totals_selected_radio_item)) {
 
-                                $amount = floatval( $item['price'] );
+                                $amount = floatval($item['price']);
 
-                                if ( wpinv_use_taxes() ) {
+                                if (wpinv_use_taxes()) {
 
-                                    $rate = wpinv_get_tax_rate( wpinv_get_default_country(), false, (int) $item['id'] );
+                                    $rate = wpinv_get_tax_rate(wpinv_get_default_country(), false, (int) $item['id']);
 
-                                    if ( wpinv_prices_include_tax() ) {
-                                        $pre_tax  = ( $amount - $amount * $rate * 0.01 );
+                                    if (wpinv_prices_include_tax()) {
+                                        $pre_tax  = ($amount - $amount * $rate * 0.01);
                                         $item_tax = $amount - $pre_tax;
                                     } else {
                                         $pre_tax  = $amount;
@@ -2002,13 +2002,13 @@ 
                                     $total     = $sub_total + $tax;
 
                                 } else {
-                                    $total  = $total + $amount;
+                                    $total = $total + $amount;
                                 }
 
                                 $class3 = '';
                                 $name   = "wpinv-items[{$item['id']}]";
 
-                                if ( empty( $item['required'] ) ) {
+                                if (empty($item['required'])) {
                                     $totals_selected_radio_item = 1;
                                 }
 
@@ -2020,9 +2020,9 @@ 
 
                     <div  class="item_totals_item <?php echo $class3; ?>" data-id="<?php echo (int) $item['id']; ?>">
                         <div class='row pl-2 pr-2 pt-2'>
-                            <div class='<?php echo $class; ?>'><?php echo esc_html( $item['title'] ) ?></div>
+                            <div class='<?php echo $class; ?>'><?php echo esc_html($item['title']) ?></div>
 
-                            <?php  if ( ! empty( $item['allow_quantities'] ) ) { ?>
+                            <?php  if (!empty($item['allow_quantities'])) { ?>
 
                                 <div class='col-2'>
                                     <input name='wpinv-item-<?php echo (int) $item['id']; ?>-quantity' type='number' class='form-control wpinv-item-quantity-input pr-1' value='1' min='1' required>
@@ -2030,11 +2030,11 @@ 
 
                             <?php } else { ?>
                                 <input type='hidden' class='wpinv-item-quantity-input' value='1'>
-                            <?php } if ( empty( $item['custom_price'] ) ) { ?>
+                            <?php } if (empty($item['custom_price'])) { ?>
 
                                 <div class='col-4 <?php echo $class2; ?>'>
-                                    <?php echo wpinv_price( wpinv_format_amount( $item['price'] ) ) ?>
-                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval( $item['price'] ); ?>'>
+                                    <?php echo wpinv_price(wpinv_format_amount($item['price'])) ?>
+                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval($item['price']); ?>'>
                                 </div>
 
                             <?php } else {?>
@@ -2042,15 +2042,15 @@ 
                                 <div class='col-4'>
                                     <div class='input-group'>
 
-                                        <?php if ( 'left' == wpinv_currency_position() ) { ?>
+                                        <?php if ('left' == wpinv_currency_position()) { ?>
                                             <div class='input-group-prepend'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
                                         <?php } ?>
 
-                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval( $item['price'] ); ?>' value='<?php echo floatval( $item['price'] ); ?>' min='<?php echo intval( $item['minimum_price'] ); ?>'>
+                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval($item['price']); ?>' value='<?php echo floatval($item['price']); ?>' min='<?php echo intval($item['minimum_price']); ?>'>
                                     
-                                        <?php if ( 'left' != wpinv_currency_position() ) { ?>
+                                        <?php if ('left' != wpinv_currency_position()) { ?>
                                             <div class='input-group-append'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
@@ -2061,27 +2061,27 @@ 
                             <?php } ?>
 
                         </div>
-                        <?php if ( ! empty( $item['description'] )) { ?>
-                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post( $item['description'] ); ?></small>
+                        <?php if (!empty($item['description'])) { ?>
+                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post($item['description']); ?></small>
                         <?php } ?>
                     </div>
                 <?php } ?>
 
                 <div class='mt-4 border-top item_totals_total p-2'>
-                    <?php if ( wpinv_use_taxes() ) { ?>
+                    <?php if (wpinv_use_taxes()) { ?>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Sub Total', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price( wpinv_format_amount( $sub_total ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Sub Total', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price(wpinv_format_amount($sub_total)) ?></strong></div>
                         </div>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Tax', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price( wpinv_format_amount( $tax ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Tax', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price(wpinv_format_amount($tax)) ?></strong></div>
                         </div>
                     <?php } ?>
 
                     <div class='row'>
-                        <div class='col-8'><strong class='mr-5'><?php _e( 'Total', 'invoicing' ); ?></strong></div>
-                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price( wpinv_format_amount( $total ) ) ?></strong></div>
+                        <div class='col-8'><strong class='mr-5'><?php _e('Total', 'invoicing'); ?></strong></div>
+                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price(wpinv_format_amount($total)) ?></strong></div>
                     </div>
                 </div>
 
@@ -2089,22 +2089,22 @@ 
             </div>
         <?php } ?>
 
-        <?php if ( 'checkbox' == $field[ 'items_type' ] ) { ?>
+        <?php if ('checkbox' == $field['items_type']) { ?>
 
             <div class="item_totals_type_checkbox">
 
                 <?php
-                    foreach ( $items as $index => $item ) {
+                    foreach ($items as $index => $item) {
 
-                        if ( ! empty( $item['required'] ) ) {
+                        if (!empty($item['required'])) {
                             continue;
                         }
 
-                        $title = sanitize_text_field(  $item['title'] );
-                        $price = wpinv_price( wpinv_format_amount( (float) sanitize_text_field(  $item['price'] ) ) );
-                        $item_id    = esc_attr( $id . "_$index" );
-                        $value = esc_attr( $item['id'] );
-                        $checked = checked( ! isset( $selected_checkbox_item ), true, false );
+                        $title = sanitize_text_field($item['title']);
+                        $price = wpinv_price(wpinv_format_amount((float) sanitize_text_field($item['price'])));
+                        $item_id = esc_attr($id . "_$index");
+                        $value = esc_attr($item['id']);
+                        $checked = checked(!isset($selected_checkbox_item), true, false);
                         $selected_checkbox_item = 1;
 
                         echo "
@@ -2113,7 +2113,7 @@ 
                                 <label for='$item_id' class='custom-control-label'>$title &nbsp; ($price)</label>
                             </div>";
 
-                        if ( ! empty( $item['description'] ) ) {
+                        if (!empty($item['description'])) {
                             echo "<small class='form-text text-muted'>{$item['description']}</small>";
                         }
                     }
@@ -2127,31 +2127,31 @@ 
                         $tax       = 0;
                         $sub_total = 0;
 
-                        foreach ( $items as $item ) {
+                        foreach ($items as $item) {
 
                             $class  = 'col-8';
                             $class2 = '';
 
-                            if ( ! empty( $item['allow_quantities'] ) ) {
+                            if (!empty($item['allow_quantities'])) {
                                 $class = 'col-6 pt-2';
                                 $class2 = 'pt-2';
                             }
 
-                            if ( ! empty( $item['custom_price'] ) ) {
+                            if (!empty($item['custom_price'])) {
                                 $class .= ' pt-2';
                             }
 
                             $class3 = 'd-none';
-                            $name  = '';
-                            if ( ! empty( $item['required'] ) || ! isset( $totals_selected_checkbox_item ) ) {
+                            $name = '';
+                            if (!empty($item['required']) || !isset($totals_selected_checkbox_item)) {
 
-                                $amount = floatval( $item['price'] );
-                                if ( wpinv_use_taxes() ) {
+                                $amount = floatval($item['price']);
+                                if (wpinv_use_taxes()) {
 
-                                    $rate = wpinv_get_tax_rate( wpinv_get_default_country(), false, (int) $item['id'] );
+                                    $rate = wpinv_get_tax_rate(wpinv_get_default_country(), false, (int) $item['id']);
 
-                                    if ( wpinv_prices_include_tax() ) {
-                                        $pre_tax  = ( $amount - $amount * $rate * 0.01 );
+                                    if (wpinv_prices_include_tax()) {
+                                        $pre_tax  = ($amount - $amount * $rate * 0.01);
                                         $item_tax = $amount - $pre_tax;
                                     } else {
                                         $pre_tax  = $amount;
@@ -2163,13 +2163,13 @@ 
                                     $total     = $sub_total + $tax;
 
                                 } else {
-                                    $total  = $total + $amount;
+                                    $total = $total + $amount;
                                 }
 
                                 $class3 = '';
-                                $name  = "wpinv-items[{$item['id']}]";
+                                $name = "wpinv-items[{$item['id']}]";
 
-                                if ( empty( $item['required'] ) ) {
+                                if (empty($item['required'])) {
                                     $totals_selected_checkbox_item = 1;
                                 }
 
@@ -2181,9 +2181,9 @@ 
 
                     <div  class="item_totals_item <?php echo $class3; ?>" data-id="<?php echo (int) $item['id']; ?>">
                         <div class='row pl-2 pr-2 pt-2'>
-                            <div class='<?php echo $class; ?>'><?php echo esc_html( $item['title'] ) ?></div>
+                            <div class='<?php echo $class; ?>'><?php echo esc_html($item['title']) ?></div>
 
-                            <?php  if ( ! empty( $item['allow_quantities'] ) ) { ?>
+                            <?php  if (!empty($item['allow_quantities'])) { ?>
 
                                 <div class='col-2'>
                                     <input name='wpinv-item-<?php echo (int) $item['id']; ?>-quantity' type='number' class='form-control wpinv-item-quantity-input pr-1' value='1' min='1' required>
@@ -2191,11 +2191,11 @@ 
 
                             <?php } else { ?>
                                 <input type='hidden' class='wpinv-item-quantity-input' value='1'>
-                            <?php } if ( empty( $item['custom_price'] ) ) { ?>
+                            <?php } if (empty($item['custom_price'])) { ?>
 
                                 <div class='col-4 <?php echo $class2; ?>'>
-                                    <?php echo wpinv_price( wpinv_format_amount( $item['price'] ) ) ?>
-                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval( $item['price'] ); ?>'>
+                                    <?php echo wpinv_price(wpinv_format_amount($item['price'])) ?>
+                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval($item['price']); ?>'>
                                 </div>
 
                             <?php } else {?>
@@ -2203,15 +2203,15 @@ 
                                 <div class='col-4'>
                                     <div class='input-group'>
 
-                                        <?php if ( 'left' == wpinv_currency_position() ) { ?>
+                                        <?php if ('left' == wpinv_currency_position()) { ?>
                                             <div class='input-group-prepend'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
                                         <?php } ?>
 
-                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval( $item['price'] ); ?>' value='<?php echo floatval( $item['price'] ); ?>' min='<?php echo intval( $item['minimum_price'] ); ?>'>
+                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval($item['price']); ?>' value='<?php echo floatval($item['price']); ?>' min='<?php echo intval($item['minimum_price']); ?>'>
                                     
-                                        <?php if ( 'left' != wpinv_currency_position() ) { ?>
+                                        <?php if ('left' != wpinv_currency_position()) { ?>
                                             <div class='input-group-append'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
@@ -2222,35 +2222,35 @@ 
                             <?php } ?>
 
                         </div>
-                        <?php if ( ! empty( $item['description'] )) { ?>
-                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post( $item['description'] ); ?></small>
+                        <?php if (!empty($item['description'])) { ?>
+                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post($item['description']); ?></small>
                         <?php } ?>
                     </div>
                 <?php } ?>
 
                 <div class='mt-4 border-top item_totals_total p-2'>
 
-                    <?php if ( wpinv_use_taxes() ) { ?>
+                    <?php if (wpinv_use_taxes()) { ?>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Sub Total', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price( wpinv_format_amount( $sub_total ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Sub Total', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price(wpinv_format_amount($sub_total)) ?></strong></div>
                         </div>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Tax', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price( wpinv_format_amount( $tax ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Tax', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price(wpinv_format_amount($tax)) ?></strong></div>
                         </div>
                     <?php } ?>
 
                     <div class='row'>
-                        <div class='col-8'><strong class='mr-5'><?php _e( 'Total', 'invoicing' ); ?></strong></div>
-                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price( wpinv_format_amount( $total ) ) ?></strong></div>
+                        <div class='col-8'><strong class='mr-5'><?php _e('Total', 'invoicing'); ?></strong></div>
+                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price(wpinv_format_amount($total)) ?></strong></div>
                     </div>
                 </div>
             </div>
             </div>
         <?php } ?>
 
-        <?php if ( 'select' == $field[ 'items_type' ] ) { ?>
+        <?php if ('select' == $field['items_type']) { ?>
 
             <div class="item_totals_type_select">
 
@@ -2258,17 +2258,17 @@ 
 
                     $options  = array();
                     $selected = '';
-                    foreach ( $items as $index => $item ) {
+                    foreach ($items as $index => $item) {
 
-                        if ( ! empty( $item['required'] ) ) {
+                        if (!empty($item['required'])) {
                             continue;
                         }
 
-                        $title = sanitize_text_field(  $item['title'] );
-                        $price = wpinv_price( wpinv_format_amount( (float) sanitize_text_field(  $item['price'] ) ) );
-                        $options[ $item['id'] ] = "$title &nbsp; ($price)";
+                        $title = sanitize_text_field($item['title']);
+                        $price = wpinv_price(wpinv_format_amount((float) sanitize_text_field($item['price'])));
+                        $options[$item['id']] = "$title &nbsp; ($price)";
 
-                        if ( ! isset( $selected_item ) ) {
+                        if (!isset($selected_item)) {
                             $selected = $item['id'];
                             $selected_item = 1;
                         }
@@ -2279,7 +2279,7 @@ 
                         array(
                                 'name'        => 'payment-form-items',
                                 'id'          => $id,
-                                'placeholder' => __( 'Select an item', 'invoicing' ),
+                                'placeholder' => __('Select an item', 'invoicing'),
                                 'no_wrap'     => true,
                                 'options'     => $options,
                                 'class'       => 'wpi_select2 wpinv-items-select-selector',
@@ -2296,31 +2296,31 @@ 
                         $tax       = 0;
                         $sub_total = 0;
 
-                        foreach ( $items as $item ) {
+                        foreach ($items as $item) {
 
                             $class  = 'col-8';
                             $class2 = '';
 
-                            if ( ! empty( $item['allow_quantities'] ) ) {
+                            if (!empty($item['allow_quantities'])) {
                                 $class = 'col-6 pt-2';
                                 $class2 = 'pt-2';
                             }
 
-                            if ( ! empty( $item['custom_price'] ) ) {
+                            if (!empty($item['custom_price'])) {
                                 $class .= ' pt-2';
                             }
 
                             $class3 = 'd-none';
-                            $name  = '';
-                            if ( ! empty( $item['required'] ) || ! isset( $totals_selected_select_item ) ) {
+                            $name = '';
+                            if (!empty($item['required']) || !isset($totals_selected_select_item)) {
 
-                                $amount = floatval( $item['price'] );
-                                if ( wpinv_use_taxes() ) {
+                                $amount = floatval($item['price']);
+                                if (wpinv_use_taxes()) {
 
-                                    $rate = wpinv_get_tax_rate( wpinv_get_default_country(), false, (int) $item['id'] );
+                                    $rate = wpinv_get_tax_rate(wpinv_get_default_country(), false, (int) $item['id']);
 
-                                    if ( wpinv_prices_include_tax() ) {
-                                        $pre_tax  = ( $amount - $amount * $rate * 0.01 );
+                                    if (wpinv_prices_include_tax()) {
+                                        $pre_tax  = ($amount - $amount * $rate * 0.01);
                                         $item_tax = $amount - $pre_tax;
                                     } else {
                                         $pre_tax  = $amount;
@@ -2332,13 +2332,13 @@ 
                                     $total     = $sub_total + $tax;
 
                                 } else {
-                                    $total  = $total + $amount;
+                                    $total = $total + $amount;
                                 }
 
                                 $class3 = '';
-                                $name  = "wpinv-items[{$item['id']}]";
+                                $name = "wpinv-items[{$item['id']}]";
 
-                                if ( empty( $item['required'] ) ) {
+                                if (empty($item['required'])) {
                                     $totals_selected_select_item = 1;
                                 }
 
@@ -2350,9 +2350,9 @@ 
 
                     <div  class="item_totals_item <?php echo $class3; ?>" data-id="<?php echo (int) $item['id']; ?>">
                         <div class='row pl-2 pr-2 pt-2'>
-                            <div class='<?php echo $class; ?>'><?php echo esc_html( $item['title'] ) ?></div>
+                            <div class='<?php echo $class; ?>'><?php echo esc_html($item['title']) ?></div>
 
-                            <?php  if ( ! empty( $item['allow_quantities'] ) ) { ?>
+                            <?php  if (!empty($item['allow_quantities'])) { ?>
 
                                 <div class='col-2'>
                                     <input name='wpinv-item-<?php echo (int) $item['id']; ?>-quantity' type='number' class='form-control wpinv-item-quantity-input pr-1' value='1' min='1' required>
@@ -2360,11 +2360,11 @@ 
 
                             <?php } else { ?>
                                 <input type='hidden' class='wpinv-item-quantity-input' value='1'>
-                            <?php } if ( empty( $item['custom_price'] ) ) { ?>
+                            <?php } if (empty($item['custom_price'])) { ?>
 
                                 <div class='col-4 <?php echo $class2; ?>'>
-                                    <?php echo wpinv_price( wpinv_format_amount( $item['price'] ) ) ?>
-                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval( $item['price'] ); ?>'>
+                                    <?php echo wpinv_price(wpinv_format_amount($item['price'])) ?>
+                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval($item['price']); ?>'>
                                 </div>
 
                             <?php } else {?>
@@ -2372,15 +2372,15 @@ 
                                 <div class='col-4'>
                                     <div class='input-group'>
 
-                                        <?php if ( 'left' == wpinv_currency_position() ) { ?>
+                                        <?php if ('left' == wpinv_currency_position()) { ?>
                                             <div class='input-group-prepend'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
                                         <?php } ?>
 
-                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval( $item['price'] ); ?>' value='<?php echo floatval( $item['price'] ); ?>' min='<?php echo intval( $item['minimum_price'] ); ?>'>
+                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval($item['price']); ?>' value='<?php echo floatval($item['price']); ?>' min='<?php echo intval($item['minimum_price']); ?>'>
                                     
-                                        <?php if ( 'left' != wpinv_currency_position() ) { ?>
+                                        <?php if ('left' != wpinv_currency_position()) { ?>
                                             <div class='input-group-append'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
@@ -2391,34 +2391,34 @@ 
                             <?php } ?>
 
                         </div>
-                        <?php if ( ! empty( $item['description'] )) { ?>
-                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post( $item['description'] ); ?></small>
+                        <?php if (!empty($item['description'])) { ?>
+                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post($item['description']); ?></small>
                         <?php } ?>
                     </div>
                 <?php } ?>
 
                 <div class='mt-4 border-top item_totals_total p-2'>
 
-                    <?php if ( wpinv_use_taxes() ) { ?>
+                    <?php if (wpinv_use_taxes()) { ?>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Sub Total', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price( wpinv_format_amount( $sub_total ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Sub Total', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price(wpinv_format_amount($sub_total)) ?></strong></div>
                         </div>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Tax', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price( wpinv_format_amount( $tax ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Tax', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price(wpinv_format_amount($tax)) ?></strong></div>
                         </div>
                     <?php } ?>
                     <div class='row'>
-                        <div class='col-8'><strong class='mr-5'><?php _e( 'Total', 'invoicing' ); ?></strong></div>
-                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price( wpinv_format_amount( $total ) ) ?></strong></div>
+                        <div class='col-8'><strong class='mr-5'><?php _e('Total', 'invoicing'); ?></strong></div>
+                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price(wpinv_format_amount($total)) ?></strong></div>
                     </div>
                 </div>
 
             </div>
         <?php } ?>
 
-        <?php if ( 'multi_select' == $field[ 'items_type' ] ) { ?>
+        <?php if ('multi_select' == $field['items_type']) { ?>
 
             <div class="item_totals_type_multi_select">
 
@@ -2427,18 +2427,18 @@ 
                     $options  = array();
                     $selected = array();
 
-                    foreach ( $items as $index => $item ) {
+                    foreach ($items as $index => $item) {
 
-                        if ( ! empty( $item['required'] ) ) {
+                        if (!empty($item['required'])) {
                             continue;
                         }
 
-                        $title = sanitize_text_field(  $item['title'] );
-                        $price = wpinv_price( wpinv_format_amount( (float) sanitize_text_field(  $item['price'] ) ) );
-                        $options[ $item['id'] ] = "$title &nbsp; ($price)";
+                        $title = sanitize_text_field($item['title']);
+                        $price = wpinv_price(wpinv_format_amount((float) sanitize_text_field($item['price'])));
+                        $options[$item['id']] = "$title &nbsp; ($price)";
 
-                        if ( ! isset( $selected_item ) ) {
-                            $selected = array( $item['id'] );
+                        if (!isset($selected_item)) {
+                            $selected = array($item['id']);
                             $selected_item = 1;
                         }
 
@@ -2465,31 +2465,31 @@ 
                         $tax       = 0;
                         $sub_total = 0;
 
-                        foreach ( $items as $item ) {
+                        foreach ($items as $item) {
 
                             $class  = 'col-8';
                             $class2 = '';
 
-                            if ( ! empty( $item['allow_quantities'] ) ) {
+                            if (!empty($item['allow_quantities'])) {
                                 $class = 'col-6 pt-2';
                                 $class2 = 'pt-2';
                             }
 
-                            if ( ! empty( $item['custom_price'] ) ) {
+                            if (!empty($item['custom_price'])) {
                                 $class .= ' pt-2';
                             }
 
                             $class3 = 'd-none';
-                            $name  = '';
-                            if ( ! empty( $item['required'] ) || ! isset( $totals_selected_select_item ) ) {
+                            $name = '';
+                            if (!empty($item['required']) || !isset($totals_selected_select_item)) {
 
-                                $amount = floatval( $item['price'] );
-                                if ( wpinv_use_taxes() ) {
+                                $amount = floatval($item['price']);
+                                if (wpinv_use_taxes()) {
 
-                                    $rate = wpinv_get_tax_rate( wpinv_get_default_country(), false, (int) $item['id'] );
+                                    $rate = wpinv_get_tax_rate(wpinv_get_default_country(), false, (int) $item['id']);
 
-                                    if ( wpinv_prices_include_tax() ) {
-                                        $pre_tax  = ( $amount - $amount * $rate * 0.01 );
+                                    if (wpinv_prices_include_tax()) {
+                                        $pre_tax  = ($amount - $amount * $rate * 0.01);
                                         $item_tax = $amount - $pre_tax;
                                     } else {
                                         $pre_tax  = $amount;
@@ -2501,13 +2501,13 @@ 
                                     $total     = $sub_total + $tax;
 
                                 } else {
-                                    $total  = $total + $amount;
+                                    $total = $total + $amount;
                                 }
 
                                 $class3 = '';
-                                $name  = "wpinv-items[{$item['id']}]";
+                                $name = "wpinv-items[{$item['id']}]";
 
-                                if ( empty( $item['required'] ) ) {
+                                if (empty($item['required'])) {
                                     $totals_selected_select_item = 1;
                                 }
 
@@ -2519,9 +2519,9 @@ 
 
                     <div  class="item_totals_item <?php echo $class3; ?>" data-id="<?php echo (int) $item['id']; ?>">
                         <div class='row pl-2 pr-2 pt-2'>
-                            <div class='<?php echo $class; ?>'><?php echo esc_html( $item['title'] ) ?></div>
+                            <div class='<?php echo $class; ?>'><?php echo esc_html($item['title']) ?></div>
 
-                            <?php  if ( ! empty( $item['allow_quantities'] ) ) { ?>
+                            <?php  if (!empty($item['allow_quantities'])) { ?>
 
                                 <div class='col-2'>
                                     <input name='wpinv-item-<?php echo (int) $item['id']; ?>-quantity' type='number' class='form-control wpinv-item-quantity-input pr-1' value='1' min='1' required>
@@ -2529,11 +2529,11 @@ 
 
                             <?php } else { ?>
                                 <input type='hidden' class='wpinv-item-quantity-input' value='1'>
-                            <?php } if ( empty( $item['custom_price'] ) ) { ?>
+                            <?php } if (empty($item['custom_price'])) { ?>
 
                                 <div class='col-4 <?php echo $class2; ?>'>
-                                    <?php echo wpinv_price( wpinv_format_amount( $item['price'] ) ) ?>
-                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval( $item['price'] ); ?>'>
+                                    <?php echo wpinv_price(wpinv_format_amount($item['price'])) ?>
+                                    <input name='<?php echo $name; ?>' type='hidden' class='wpinv-item-price-input' value='<?php echo floatval($item['price']); ?>'>
                                 </div>
 
                             <?php } else {?>
@@ -2541,15 +2541,15 @@ 
                                 <div class='col-4'>
                                     <div class='input-group'>
 
-                                        <?php if ( 'left' == wpinv_currency_position() ) { ?>
+                                        <?php if ('left' == wpinv_currency_position()) { ?>
                                             <div class='input-group-prepend'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
                                         <?php } ?>
 
-                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval( $item['price'] ); ?>' value='<?php echo floatval( $item['price'] ); ?>' min='<?php echo intval( $item['minimum_price'] ); ?>'>
+                                        <input type='number' name='<?php echo $name; ?>' class='form-control wpinv-item-price-input' placeholder='<?php echo floatval($item['price']); ?>' value='<?php echo floatval($item['price']); ?>' min='<?php echo intval($item['minimum_price']); ?>'>
                                     
-                                        <?php if ( 'left' != wpinv_currency_position() ) { ?>
+                                        <?php if ('left' != wpinv_currency_position()) { ?>
                                             <div class='input-group-append'>
                                                 <span class='input-group-text'><?php echo wpinv_currency_symbol(); ?></span>
                                             </div>
@@ -2560,35 +2560,35 @@ 
                             <?php } ?>
 
                         </div>
-                        <?php if ( ! empty( $item['description'] )) { ?>
-                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post( $item['description'] ); ?></small>
+                        <?php if (!empty($item['description'])) { ?>
+                            <small class='form-text text-muted pl-2 pr-2 m-0'><?php echo wp_kses_post($item['description']); ?></small>
                         <?php } ?>
                     </div>
                 <?php } ?>
 
                 <div class='mt-4 border-top item_totals_total p-2'>
 
-                    <?php if ( wpinv_use_taxes() ) { ?>
+                    <?php if (wpinv_use_taxes()) { ?>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Sub Total', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price( wpinv_format_amount( $sub_total ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Sub Total', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-sub-total'><?php echo wpinv_price(wpinv_format_amount($sub_total)) ?></strong></div>
                         </div>
                         <div class='row'>
-                            <div class='col-8'><strong class='mr-5'><?php _e( 'Tax', 'invoicing' ); ?></strong></div>
-                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price( wpinv_format_amount( $tax ) ) ?></strong></div>
+                            <div class='col-8'><strong class='mr-5'><?php _e('Tax', 'invoicing'); ?></strong></div>
+                            <div class='col-4'><strong class='wpinv-items-tax' ><?php echo wpinv_price(wpinv_format_amount($tax)) ?></strong></div>
                         </div>
                     <?php } ?>
 
                     <div class='row'>
-                        <div class='col-8'><strong class='mr-5'><?php _e( 'Total', 'invoicing' ); ?></strong></div>
-                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price( wpinv_format_amount( $total ) ) ?></strong></div>
+                        <div class='col-8'><strong class='mr-5'><?php _e('Total', 'invoicing'); ?></strong></div>
+                        <div class='col-4'><strong class='wpinv-items-total' data-currency='<?php echo wpinv_currency_symbol(); ?>' data-currency-position='<?php echo wpinv_currency_position(); ?>'><?php echo wpinv_price(wpinv_format_amount($total)) ?></strong></div>
                     </div>
                 </div>
 
             </div>
         <?php } ?>
-        <?php if ( ! empty( $field[ 'description' ] ) ) { ?>
-            <small class='form-text text-muted'><?php echo wp_kses_post( $field[ 'description' ] ); ?></small>
+        <?php if (!empty($field['description'])) { ?>
+            <small class='form-text text-muted'><?php echo wp_kses_post($field['description']); ?></small>
         <?php } ?>
         </div>
         <?php
@@ -2597,57 +2597,57 @@ 
     /**
      * Renders the items element template.
      */
-    public function edit_items_template( $field ) {
+    public function edit_items_template($field) {
         global $wpinv_euvat, $post;
 
-        $restrict = $this->get_restrict_markup( $field, 'items' );
-        $label    = __( 'Let customers...', 'invoicing' );
-        $label2   = __( 'Available Items', 'invoicing' );
-        $label3   = esc_attr__( 'Add some help text for this element', 'invoicing' );
+        $restrict = $this->get_restrict_markup($field, 'items');
+        $label    = __('Let customers...', 'invoicing');
+        $label2   = __('Available Items', 'invoicing');
+        $label3   = esc_attr__('Add some help text for this element', 'invoicing');
         $id       = $field . '.id + "_edit"';
         $id2      = $field . '.id + "_edit2"';
         $id3      = $field . '.id + "_edit3"';
         $id4      = $field . '.id + "_edit4"';
-        $label4   = esc_attr__( 'This will be shown to the customer as the recommended price', 'invoicing' );
-        $label5   = esc_attr__( 'Allow users to pay what they want', 'invoicing' );
-        $label6   = esc_attr__( 'Enter the minimum price that a user can pay', 'invoicing' );
-        $label7   = esc_attr__( 'Allow users to buy several quantities', 'invoicing' );
-        $label8   = esc_attr__( 'This item is required', 'invoicing' );
+        $label4   = esc_attr__('This will be shown to the customer as the recommended price', 'invoicing');
+        $label5   = esc_attr__('Allow users to pay what they want', 'invoicing');
+        $label6   = esc_attr__('Enter the minimum price that a user can pay', 'invoicing');
+        $label7   = esc_attr__('Allow users to buy several quantities', 'invoicing');
+        $label8   = esc_attr__('This item is required', 'invoicing');
 
         // Item types.
-        $item_types      = apply_filters( 'wpinv_item_types_for_quick_add_item', wpinv_get_item_types(), $post );
+        $item_types      = apply_filters('wpinv_item_types_for_quick_add_item', wpinv_get_item_types(), $post);
         $item_types_html = '';
 
-        foreach ( $item_types as $type => $label ) {
-            $type  = esc_attr( $type );
-            $label = esc_html( $label );
+        foreach ($item_types as $type => $label) {
+            $type  = esc_attr($type);
+            $label = esc_html($label);
             $item_types_html .= "<option value='$type'>$label</type>";
         }
 
         // Taxes.
         $taxes = '';
-        if ( $wpinv_euvat->allow_vat_rules() ) {
+        if ($wpinv_euvat->allow_vat_rules()) {
             $taxes .= "<div class='form-group'> <label :for='$id + item.id + \"rule\"'>";
-            $taxes .= __( 'VAT rule type', 'invoicing' );
+            $taxes .= __('VAT rule type', 'invoicing');
             $taxes .= "</label><select :id='$id + item.id + \"rule\"' class='form-control custom-select' v-model='item.rule'>";
 
-            foreach ( $wpinv_euvat->get_rules() as $type => $label ) {
-                $type   = esc_attr( $type );
-                $label  = esc_html( $label );
+            foreach ($wpinv_euvat->get_rules() as $type => $label) {
+                $type   = esc_attr($type);
+                $label  = esc_html($label);
                 $taxes .= "<option value='$type'>$label</type>";
             }
 
             $taxes .= '</select></div>';
         }
 
-        if ( $wpinv_euvat->allow_vat_classes() ) {
+        if ($wpinv_euvat->allow_vat_classes()) {
             $taxes .= "<div class='form-group'> <label :for='$id + item.id + \"class\"'>";
-            $taxes .= __( 'VAT class', 'invoicing' );
+            $taxes .= __('VAT class', 'invoicing');
             $taxes .= "</label><select :id='$id + item.id + \"class\"' class='form-control custom-select' v-model='item.class'>";
 
-            foreach ( $wpinv_euvat->get_all_classes() as $type => $label ) {
-                $type   = esc_attr( $type );
-                $label  = esc_html( $label );
+            foreach ($wpinv_euvat->get_all_classes() as $type => $label) {
+                $type   = esc_attr($type);
+                $label  = esc_html($label);
                 $taxes .= "<option value='$type'>$label</type>";
             }
 
@@ -2732,7 +2732,7 @@ 
                 <div class='form-group mt-2'>
 
                     <select class='form-control custom-select' v-model='selected_item' @change='addSelectedItem'>
-                        <option value=''>"        . __( 'Add an existing item to the form', 'invoicing' ) ."</option>
+                        <option value=''>" . __('Add an existing item to the form', 'invoicing') . "</option>
                         <option v-for='(item, index) in all_items' :value='index'>{{item.title}}</option>
                     </select>
 
@@ -2747,11 +2747,11 @@ 
                     <label :for='$id2'>$label</label>
 
                     <select class='form-control custom-select' :id='$id2' v-model='$field.items_type'>
-                        <option value='total' :disabled='canCheckoutSeveralSubscriptions($field)'>"        . __( 'Buy all items on the list', 'invoicing' ) ."</option>
-                        <option value='radio'>"        . __( 'Select a single item from the list', 'invoicing' ) ."</option>
-                        <option value='checkbox' :disabled='canCheckoutSeveralSubscriptions($field)'>"     . __( 'Select one or more items on the list', 'invoicing' ) ."</option>
-                        <option value='select'>"       . __( 'Select a single item from a dropdown', 'invoicing' ) ."</option>
-                        <option value='multi_select' :disabled='canCheckoutSeveralSubscriptions($field)'>" . __( 'Select a one or more items from a dropdown', 'invoicing' ) ."</option>
+                        <option value='total' :disabled='canCheckoutSeveralSubscriptions($field)'>" . __('Buy all items on the list', 'invoicing') . "</option>
+                        <option value='radio'>"        . __('Select a single item from the list', 'invoicing') . "</option>
+                        <option value='checkbox' :disabled='canCheckoutSeveralSubscriptions($field)'>" . __('Select one or more items on the list', 'invoicing') . "</option>
+                        <option value='select'>"       . __('Select a single item from a dropdown', 'invoicing') . "</option>
+                        <option value='multi_select' :disabled='canCheckoutSeveralSubscriptions($field)'>" . __('Select a one or more items from a dropdown', 'invoicing') . "</option>
                     </select>
 
                 </div>
@@ -2776,7 +2776,7 @@ 
             'orderby'        => 'title',
             'order'          => 'ASC',
             'posts_per_page' => -1,
-            'post_status'    => array( 'publish' ),
+            'post_status'    => array('publish'),
             'meta_query'     => array(
                 array(
                     'key'       => '_wpinv_type',
@@ -2786,24 +2786,24 @@ 
             )
         );
     
-        $items = get_posts( apply_filters( 'wpinv_payment_form_item_dropdown_query_args', $item_args ) );
+        $items = get_posts(apply_filters('wpinv_payment_form_item_dropdown_query_args', $item_args));
 
-        if ( empty( $items ) ) {
+        if (empty($items)) {
             return array();
         }
 
-        $options    = array();
-        foreach ( $items as $item ) {
-            $title            = esc_html( $item->post_title );
-            $title           .= wpinv_get_item_suffix( $item->ID, false );
-            $id               = absint( $item->ID );
-            $price            = wpinv_sanitize_amount( get_post_meta( $id, '_wpinv_price', true ) );
-            $recurring        = (bool) get_post_meta( $id, '_wpinv_is_recurring', true );
+        $options = array();
+        foreach ($items as $item) {
+            $title            = esc_html($item->post_title);
+            $title           .= wpinv_get_item_suffix($item->ID, false);
+            $id               = absint($item->ID);
+            $price            = wpinv_sanitize_amount(get_post_meta($id, '_wpinv_price', true));
+            $recurring        = (bool) get_post_meta($id, '_wpinv_is_recurring', true);
             $description      = $item->post_excerpt;
-            $custom_price     = (bool) get_post_meta( $id, '_wpinv_dynamic_pricing', true );
-            $minimum_price    = (float) get_post_meta( $id, '_minimum_price', true );
+            $custom_price     = (bool) get_post_meta($id, '_wpinv_dynamic_pricing', true);
+            $minimum_price    = (float) get_post_meta($id, '_minimum_price', true);
             $allow_quantities = false;
-            $options[]        = compact( 'title', 'id', 'price', 'recurring', 'description', 'custom_price', 'minimum_price', 'allow_quantities' );
+            $options[]        = compact('title', 'id', 'price', 'recurring', 'description', 'custom_price', 'minimum_price', 'allow_quantities');
 
         }
         return $options;
@@ -2813,47 +2813,47 @@ 
     /**
      * Returns an array of items for the currently being edited form.
      */
-    public function get_form_items( $id = false ) {
+    public function get_form_items($id = false) {
         
-        if ( empty( $id ) ) {
-            return wpinv_get_data( 'sample-payment-form-items' );
+        if (empty($id)) {
+            return wpinv_get_data('sample-payment-form-items');
         }
         
-        $form_elements = get_post_meta( $id, 'wpinv_form_items', true );
+        $form_elements = get_post_meta($id, 'wpinv_form_items', true);
 
-        if ( is_array( $form_elements ) ) {
+        if (is_array($form_elements)) {
             return $form_elements;
         }
 
-        return wpinv_get_data( 'sample-payment-form-items' );
+        return wpinv_get_data('sample-payment-form-items');
 
     }
 
     /**
      * Returns an array of elements for the currently being edited form.
      */
-    public function get_form_elements( $id = false ) {
+    public function get_form_elements($id = false) {
 
-        if ( empty( $id ) ) {
-            return wpinv_get_data( 'sample-payment-form' );
+        if (empty($id)) {
+            return wpinv_get_data('sample-payment-form');
         }
         
-        $form_elements = get_post_meta( $id, 'wpinv_form_elements', true );
+        $form_elements = get_post_meta($id, 'wpinv_form_elements', true);
 
-        if ( is_array( $form_elements ) ) {
+        if (is_array($form_elements)) {
             return $form_elements;
         }
 
-        return wpinv_get_data( 'sample-payment-form' );
+        return wpinv_get_data('sample-payment-form');
     }
 
     /**
      * Sends a redrect response to payment details.
      *
      */
-    public function send_redirect_response( $url ) {
-        $url = urlencode( $url );
-        wp_send_json_success( $url );
+    public function send_redirect_response($url) {
+        $url = urlencode($url);
+        wp_send_json_success($url);
     }
 
     /**
@@ -2864,12 +2864,12 @@ 
 
         $errors = wpinv_get_errors();
 
-        if ( ! empty( $errors ) ) {
+        if (!empty($errors)) {
             wpinv_print_errors();
             exit;
         }
 
-        wp_send_json_error( __( 'An error occured while processing your payment. Please try again.', 'invoicing' ) );
+        wp_send_json_error(__('An error occured while processing your payment. Please try again.', 'invoicing'));
         exit;
 
     }