AyeCode / invoicing

includes/wpinv-gateway-functions.php

Spacing +122 added lines, -122 removed lines

@@ -3,7 +3,7 @@ 
  * Contains gateway functions.
  *
  */
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 /**
  * Returns an array of payment gateways.
@@ -11,30 +11,30 @@ 
  * @return array
  */
 function wpinv_get_payment_gateways() {
-    return apply_filters( 'wpinv_payment_gateways', array() );
+    return apply_filters('wpinv_payment_gateways', array());
 }
 
-function wpinv_payment_gateway_titles( $all_gateways ) {
+function wpinv_payment_gateway_titles($all_gateways) {
     global $wpinv_options;
 
     $gateways = array();
-    foreach ( $all_gateways as $key => $gateway ) {
-        if ( !empty( $wpinv_options[$key . '_title'] ) ) {
-            $all_gateways[$key]['checkout_label'] = __( $wpinv_options[$key . '_title'], 'invoicing' );
+    foreach ($all_gateways as $key => $gateway) {
+        if (!empty($wpinv_options[$key . '_title'])) {
+            $all_gateways[$key]['checkout_label'] = __($wpinv_options[$key . '_title'], 'invoicing');
         }
 
-        $gateways[$key] = isset( $wpinv_options[$key . '_ordering'] ) ? $wpinv_options[$key . '_ordering'] : ( isset( $gateway['ordering'] ) ? $gateway['ordering'] : '' );
+        $gateways[$key] = isset($wpinv_options[$key . '_ordering']) ? $wpinv_options[$key . '_ordering'] : (isset($gateway['ordering']) ? $gateway['ordering'] : '');
     }
 
-    asort( $gateways );
+    asort($gateways);
 
-    foreach ( $gateways as $gateway => $key ) {
+    foreach ($gateways as $gateway => $key) {
         $gateways[$gateway] = $all_gateways[$gateway];
     }
 
     return $gateways;
 }
-add_filter( 'wpinv_payment_gateways', 'wpinv_payment_gateway_titles', 1000, 1 );
+add_filter('wpinv_payment_gateways', 'wpinv_payment_gateway_titles', 1000, 1);
 
 /**
  * Returns an array of enabled gateways.
@@ -42,38 +42,38 @@ 
  * @param bool $sort
  * @return array
  */
-function wpinv_get_enabled_payment_gateways( $sort = false ) {
+function wpinv_get_enabled_payment_gateways($sort = false) {
 
     $enabled = array();
 
-    foreach ( wpinv_get_payment_gateways() as $gateway => $data ) {
+    foreach (wpinv_get_payment_gateways() as $gateway => $data) {
 
-        if ( (int) wpinv_get_option( "{$gateway}_active", $gateway === 'manual' ) === 1 ) {
-            $enabled[ $gateway ] = $data;
+        if ((int) wpinv_get_option("{$gateway}_active", $gateway === 'manual') === 1) {
+            $enabled[$gateway] = $data;
         }
 
     }
 
-    if ( true === $sort ) {
-        uasort( $enabled, 'wpinv_sort_gateway_order' );
+    if (true === $sort) {
+        uasort($enabled, 'wpinv_sort_gateway_order');
 
         // Reorder our gateways so the default is first
         $default_gateway_id = wpinv_get_default_gateway();
-        if ( isset( $enabled[ $default_gateway_id ] ) ) {
+        if (isset($enabled[$default_gateway_id])) {
             $default_gateway = array(
-                $default_gateway_id => $enabled[ $default_gateway_id ]
+                $default_gateway_id => $enabled[$default_gateway_id]
             );
 
-            unset( $enabled[ $default_gateway_id ] );
-            $enabled = array_merge( $default_gateway, $enabled );
+            unset($enabled[$default_gateway_id]);
+            $enabled = array_merge($default_gateway, $enabled);
         }
 
     }
 
-    return apply_filters( 'wpinv_enabled_payment_gateways', $enabled );
+    return apply_filters('wpinv_enabled_payment_gateways', $enabled);
 }
 
-function wpinv_sort_gateway_order( $a, $b ) {
+function wpinv_sort_gateway_order($a, $b) {
     return $a['ordering'] - $b['ordering'];
 }
 
@@ -83,9 +83,9 @@ 
  * @param string $gateway
  * @return bool
  */
-function wpinv_is_gateway_active( $gateway ) {
-    $is_active = (int) wpinv_get_option( "{$gateway}_active", $gateway === 'manual' ) === 1 ;
-    return apply_filters( 'wpinv_is_gateway_active', $is_active, $gateway );
+function wpinv_is_gateway_active($gateway) {
+    $is_active = (int) wpinv_get_option("{$gateway}_active", $gateway === 'manual') === 1;
+    return apply_filters('wpinv_is_gateway_active', $is_active, $gateway);
 }
 
 /**
@@ -94,11 +94,11 @@ 
  * @return string|false
  */
 function wpinv_get_default_gateway() {
-    $default  = wpinv_get_option( 'default_gateway' );
+    $default  = wpinv_get_option('default_gateway');
     $gateways = wpinv_get_enabled_payment_gateways();
-    $default  = ! empty( $default ) && isset( $gateways[ $default ] ) ? $default : false;
+    $default  = !empty($default) && isset($gateways[$default]) ? $default : false;
 
-    return apply_filters( 'wpinv_default_gateway', $default );
+    return apply_filters('wpinv_default_gateway', $default);
 }
 
 /**
@@ -107,17 +107,17 @@ 
  * @param string $gateway The gateway to key.
  * @return string
  */
-function wpinv_get_gateway_admin_label( $gateway ) {
+function wpinv_get_gateway_admin_label($gateway) {
 
-    if ( empty( $gateway ) || 'none' == $gateway ) {
-        return esc_html__( 'No Gateway', 'invoicing' );
+    if (empty($gateway) || 'none' == $gateway) {
+        return esc_html__('No Gateway', 'invoicing');
     }
 
     $gateways = wpinv_get_payment_gateways();
-    $label    = isset( $gateways[ $gateway ] ) ? $gateways[ $gateway ]['admin_label'] : $gateway;
-    $gateway  = apply_filters( 'wpinv_gateway_admin_label', $label, $gateway );
+    $label    = isset($gateways[$gateway]) ? $gateways[$gateway]['admin_label'] : $gateway;
+    $gateway  = apply_filters('wpinv_gateway_admin_label', $label, $gateway);
 
-    return wpinv_clean( $gateway );
+    return wpinv_clean($gateway);
 }
 
 /**
@@ -125,48 +125,48 @@ 
  *
  * @param string $gateway
  */
-function wpinv_get_gateway_description( $gateway ) {
+function wpinv_get_gateway_description($gateway) {
     global $wpinv_options;
 
-    $description = ! empty( $wpinv_options[$gateway . '_desc'] ) ? $wpinv_options[$gateway . '_desc'] : '';
+    $description = !empty($wpinv_options[$gateway . '_desc']) ? $wpinv_options[$gateway . '_desc'] : '';
 
-    return apply_filters( 'wpinv_gateway_description', $description, $gateway );
+    return apply_filters('wpinv_gateway_description', $description, $gateway);
 }
 
-function wpinv_get_gateway_button_label( $gateway ) {
-    return apply_filters( 'wpinv_gateway_' . $gateway . '_button_label', '' );
+function wpinv_get_gateway_button_label($gateway) {
+    return apply_filters('wpinv_gateway_' . $gateway . '_button_label', '');
 }
 
-function wpinv_get_gateway_checkout_label( $gateway ) {
+function wpinv_get_gateway_checkout_label($gateway) {
     $gateways = wpinv_get_payment_gateways();
-    $label    = isset( $gateways[ $gateway ] ) ? $gateways[ $gateway ]['checkout_label'] : $gateway;
+    $label    = isset($gateways[$gateway]) ? $gateways[$gateway]['checkout_label'] : $gateway;
 
-    if ( $gateway == 'none' ) {
-        $label = __( 'None', 'invoicing' );
+    if ($gateway == 'none') {
+        $label = __('None', 'invoicing');
     }
 
-    return apply_filters( 'wpinv_gateway_checkout_label', ucfirst( $label ), $gateway );
+    return apply_filters('wpinv_gateway_checkout_label', ucfirst($label), $gateway);
 }
 
-function wpinv_settings_sections_gateways( $settings ) {
+function wpinv_settings_sections_gateways($settings) {
     $gateways = wpinv_get_payment_gateways();
-    ksort( $gateways );
+    ksort($gateways);
 
-    foreach  ( $gateways as $key => $gateway ) {
-        $settings[ $key ] = $gateway['admin_label'];
+    foreach ($gateways as $key => $gateway) {
+        $settings[$key] = $gateway['admin_label'];
     }
 
     return $settings;
 }
-add_filter( 'wpinv_settings_sections_gateways', 'wpinv_settings_sections_gateways', 10, 1 );
+add_filter('wpinv_settings_sections_gateways', 'wpinv_settings_sections_gateways', 10, 1);
 
 /**
  * Adds GateWay settings.
  */
-function wpinv_settings_gateways( $settings ) {
+function wpinv_settings_gateways($settings) {
 
     // Loop through each gateway.
-    foreach  ( wpinv_get_payment_gateways() as $key => $gateway ) {
+    foreach (wpinv_get_payment_gateways() as $key => $gateway) {
 
         $gateway_settings = array(
 
@@ -174,7 +174,7 @@ 
             "{$key}_header" => array(
 
                 'id'     => "{$key}_gateway_header",
-                'name'   => '<h3>' . wp_sprintf( __( '%s Settings', 'invoicing' ), $gateway['admin_label'] ) . '</h3>',
+                'name'   => '<h3>' . wp_sprintf(__('%s Settings', 'invoicing'), $gateway['admin_label']) . '</h3>',
                 'custom' => $key,
                 'type'   => 'gateway_header',
 
@@ -183,8 +183,8 @@ 
             // Activate/Deactivate a gateway.
             "{$key}_active" => array(
                 'id'   => $key . '_active',
-                'name' => __( 'Activate', 'invoicing' ),
-                'desc' => wp_sprintf( __( 'Enable %s', 'invoicing' ), $gateway['admin_label'] ),
+                'name' => __('Activate', 'invoicing'),
+                'desc' => wp_sprintf(__('Enable %s', 'invoicing'), $gateway['admin_label']),
                 'type' => 'checkbox',
                 'std'  => $key === 'manual' ? '1' : '0',
             ),
@@ -192,8 +192,8 @@ 
             // Activate/Deactivate sandbox.
             "{$key}_sandbox" => array(
                 'id'   => $key . '_sandbox',
-                'name' => __( 'Sandbox', 'invoicing' ),
-                'desc' => __( 'Enable sandbox to test payments', 'invoicing' ),
+                'name' => __('Sandbox', 'invoicing'),
+                'desc' => __('Enable sandbox to test payments', 'invoicing'),
                 'type' => 'checkbox',
                 'std'  => '1',
             ),
@@ -201,40 +201,40 @@ 
             // Checkout title.
             "{$key}_title" => array(
                 'id'   => $key . '_title',
-                'name' => __( 'Checkout Title', 'invoicing' ),
-                'std'  => isset( $gateway['checkout_label'] ) ? $gateway['checkout_label'] : '',
+                'name' => __('Checkout Title', 'invoicing'),
+                'std'  => isset($gateway['checkout_label']) ? $gateway['checkout_label'] : '',
                 'type' => 'text',
             ),
 
             // Checkout description.
             "{$key}_desc" => array(
                 'id'   => $key . '_desc',
-                'name' => __( 'Checkout Description', 'invoicing' ),
-                'std'  => apply_filters( "getpaid_default_{$key}_checkout_description", '' ),
+                'name' => __('Checkout Description', 'invoicing'),
+                'std'  => apply_filters("getpaid_default_{$key}_checkout_description", ''),
                 'type' => 'text',
             ),
 
             // Checkout order.
             "{$key}_ordering" => array(
                 'id'   => $key . '_ordering',
-                'name' => __( 'Priority', 'invoicing' ),
-                'std'  => apply_filters( "getpaid_default_{$key}_checkout_description", '' ),
+                'name' => __('Priority', 'invoicing'),
+                'std'  => apply_filters("getpaid_default_{$key}_checkout_description", ''),
                 'type' => 'number',
                 'step' => '1',
                 'min'  => '0',
                 'max'  => '100000',
-                'std'  => isset( $gateway['ordering'] ) ? $gateway['ordering'] : '10',
+                'std'  => isset($gateway['ordering']) ? $gateway['ordering'] : '10',
             ),
 
         );
 
         // Maybe remove the sandbox.
-        if ( ! getpaid_payment_gateway_supports( $key, 'sandbox' ) ) {
-            unset( $gateway_settings["{$key}_sandbox"] );
+        if (!getpaid_payment_gateway_supports($key, 'sandbox')) {
+            unset($gateway_settings["{$key}_sandbox"]);
         }
 
-        $gateway_settings = apply_filters( 'wpinv_gateway_settings', $gateway_settings, $key, $gateway );
-        $gateway_settings = apply_filters( 'wpinv_gateway_settings_' . $key, $gateway_settings, $gateway );
+        $gateway_settings = apply_filters('wpinv_gateway_settings', $gateway_settings, $key, $gateway);
+        $gateway_settings = apply_filters('wpinv_gateway_settings_' . $key, $gateway_settings, $gateway);
 
         $settings[$key] = $gateway_settings;
     }
@@ -242,10 +242,10 @@ 
     return $settings;
 
 }
-add_filter( 'wpinv_settings_gateways', 'wpinv_settings_gateways', 10, 1 );
+add_filter('wpinv_settings_gateways', 'wpinv_settings_gateways', 10, 1);
 
-function wpinv_gateway_header_callback( $args ) {
-    echo '<input type="hidden" id="wpinv_settings[save_gateway]" name="wpinv_settings[save_gateway]" value="' . esc_attr( $args['custom'] ) . '" />';
+function wpinv_gateway_header_callback($args) {
+    echo '<input type="hidden" id="wpinv_settings[save_gateway]" name="wpinv_settings[save_gateway]" value="' . esc_attr($args['custom']) . '" />';
 }
 
 /**
@@ -256,64 +256,64 @@ 
  * @return bool
  * @since 2.3.0
  */
-function getpaid_payment_gateway_supports( $gateway, $feature ) {
+function getpaid_payment_gateway_supports($gateway, $feature) {
 
     $supports = false;
 
-    if ( wpinv_is_gateway_active( $gateway ) ) {
+    if (wpinv_is_gateway_active($gateway)) {
 
-        $supports = apply_filters( "getpaid_{$gateway}_supports_{$feature}", false );
+        $supports = apply_filters("getpaid_{$gateway}_supports_{$feature}", false);
 
         // Backwards compatibility.
-        $supports = apply_filters( "wpinv_{$gateway}_supports_{$feature}", $supports );
-        $supports = apply_filters( "wpinv_{$gateway}_support_{$feature}", $supports );
+        $supports = apply_filters("wpinv_{$gateway}_supports_{$feature}", $supports);
+        $supports = apply_filters("wpinv_{$gateway}_support_{$feature}", $supports);
 
-        $supports = apply_filters( "getpaid_gateway_supports_{$feature}", $supports, $gateway );
-        $supports = apply_filters( 'getpaid_payment_gateway_supports', $supports, $feature, $gateway );
+        $supports = apply_filters("getpaid_gateway_supports_{$feature}", $supports, $gateway);
+        $supports = apply_filters('getpaid_payment_gateway_supports', $supports, $feature, $gateway);
     }
 
     return $supports;
 }
 
-function wpinv_get_chosen_gateway( $invoice_id = 0 ) {
-	$gateways = array_keys( wpinv_get_enabled_payment_gateways() );
+function wpinv_get_chosen_gateway($invoice_id = 0) {
+	$gateways = array_keys(wpinv_get_enabled_payment_gateways());
 
     $chosen = false;
-    if ( $invoice_id > 0 && $invoice = wpinv_get_invoice( $invoice_id ) ) {
+    if ($invoice_id > 0 && $invoice = wpinv_get_invoice($invoice_id)) {
         $chosen = $invoice->get_gateway();
     }
 
-	$chosen   = isset( $_REQUEST['payment-mode'] ) ? sanitize_text_field( $_REQUEST['payment-mode'] ) : $chosen;
+	$chosen = isset($_REQUEST['payment-mode']) ? sanitize_text_field($_REQUEST['payment-mode']) : $chosen;
 
-	if ( false !== $chosen ) {
-		$chosen = preg_replace('/[^a-zA-Z0-9-_]+/', '', $chosen );
+	if (false !== $chosen) {
+		$chosen = preg_replace('/[^a-zA-Z0-9-_]+/', '', $chosen);
 	}
 
-	if ( ! empty ( $chosen ) ) {
-		$enabled_gateway = urldecode( $chosen );
-	} else if (  !empty( $invoice ) && (float)$invoice->get_subtotal() <= 0 ) {
+	if (!empty ($chosen)) {
+		$enabled_gateway = urldecode($chosen);
+	} else if (!empty($invoice) && (float) $invoice->get_subtotal() <= 0) {
 		$enabled_gateway = 'manual';
 	} else {
 		$enabled_gateway = wpinv_get_default_gateway();
 	}
 
-    if ( !wpinv_is_gateway_active( $enabled_gateway ) && !empty( $gateways ) ) {
-        if(wpinv_is_gateway_active( wpinv_get_default_gateway()) ){
+    if (!wpinv_is_gateway_active($enabled_gateway) && !empty($gateways)) {
+        if (wpinv_is_gateway_active(wpinv_get_default_gateway())) {
             $enabled_gateway = wpinv_get_default_gateway();
-        }else{
+        } else {
             $enabled_gateway = $gateways[0];
         }
 
     }
 
-	return apply_filters( 'wpinv_chosen_gateway', $enabled_gateway );
+	return apply_filters('wpinv_chosen_gateway', $enabled_gateway);
 }
 
-function wpinv_record_gateway_error( $title = '', $message = '' ) {
-    return wpinv_error_log( $message, $title );
+function wpinv_record_gateway_error($title = '', $message = '') {
+    return wpinv_error_log($message, $title);
 }
 
-function wpinv_count_sales_by_gateway( $gateway_id = 'paypal', $status = 'publish' ) {
+function wpinv_count_sales_by_gateway($gateway_id = 'paypal', $status = 'publish') {
 	$ret  = 0;
 	$args = array(
 		'meta_key'    => '_wpinv_gateway',
@@ -324,9 +324,9 @@ 
 		'fields'      => 'ids'
 	);
 
-	$payments = new WP_Query( $args );
+	$payments = new WP_Query($args);
 
-	if( $payments )
+	if ($payments)
 		$ret = $payments->post_count;
 	return $ret;
 }
@@ -334,13 +334,13 @@ 
 /**
  * Displays the ipn url field.
  */
-function wpinv_ipn_url_callback( $args ) {
-    $sanitize_id = wpinv_sanitize_key( $args['id'] );
+function wpinv_ipn_url_callback($args) {
+    $sanitize_id = wpinv_sanitize_key($args['id']);
 
     $attrs = $args['readonly'] ? ' readonly' : '';
 
-    $html = '<input class="regular-text" type="text" ' . $attrs . ' value="' . esc_attr( $args['std'] ) . '" name="wpinv_settings[' . $sanitize_id . ']" id="wpinv_settings[' . $sanitize_id . ']" onClick="this.select()">';
-    $html .= '<label for="wpinv_settings[' . $sanitize_id . ']">'  . $args['desc'] . '</label>';
+    $html = '<input class="regular-text" type="text" ' . $attrs . ' value="' . esc_attr($args['std']) . '" name="wpinv_settings[' . $sanitize_id . ']" id="wpinv_settings[' . $sanitize_id . ']" onClick="this.select()">';
+    $html .= '<label for="wpinv_settings[' . $sanitize_id . ']">' . $args['desc'] . '</label>';
 
     echo $html;
 }
@@ -352,10 +352,10 @@ 
  *
  * @return bool
  */
-function wpinv_is_test_mode( $gateway = '' ) {
-    $sandbox  = empty( $gateway ) ? false : wpinv_get_option( "{$gateway}_sandbox", true );
-    $supports = getpaid_payment_gateway_supports( $gateway, 'sandbox' );
-    return apply_filters( 'wpinv_is_test_mode', $sandbox && $supports, $gateway );
+function wpinv_is_test_mode($gateway = '') {
+    $sandbox  = empty($gateway) ? false : wpinv_get_option("{$gateway}_sandbox", true);
+    $supports = getpaid_payment_gateway_supports($gateway, 'sandbox');
+    return apply_filters('wpinv_is_test_mode', $sandbox && $supports, $gateway);
 }
 
 /**
@@ -366,7 +366,7 @@ 
  *
  * @return string
  */
-function wpinv_get_ipn_url( $gateway = false, $args = array() ) {
+function wpinv_get_ipn_url($gateway = false, $args = array()) {
     $args = wp_parse_args(
         array(
             'wpi-listener' => 'IPN',
@@ -375,7 +375,7 @@ 
         $args
     );
 
-    return apply_filters( 'wpinv_ipn_url', add_query_arg( $args,  home_url( 'index.php' ) ), $gateway, $args );
+    return apply_filters('wpinv_ipn_url', add_query_arg($args, home_url('index.php')), $gateway, $args);
 
 }
 
@@ -386,34 +386,34 @@ 
  *
  * @return string
  */
-function getpaid_get_non_query_string_ipn_url( $gateway ) {
-    $gateway = wpinv_sanitize_key( $gateway );
-    return home_url( "getpaid-ipn/$gateway" );
+function getpaid_get_non_query_string_ipn_url($gateway) {
+    $gateway = wpinv_sanitize_key($gateway);
+    return home_url("getpaid-ipn/$gateway");
 }
 
 
 /**
  * Retrieves request data with slashes removed slashes.
  */
-function wpinv_get_post_data( $method = 'request' ) {
+function wpinv_get_post_data($method = 'request') {
 
-    if ( $method == 'post' ) {
-        return wp_unslash( $_POST );
+    if ($method == 'post') {
+        return wp_unslash($_POST);
     }
 
-    if ( $method == 'get' ) {
-        return wp_unslash( $_GET );
+    if ($method == 'get') {
+        return wp_unslash($_GET);
     }
 
-    return wp_unslash( $_REQUEST );
+    return wp_unslash($_REQUEST);
 
 }
 
 /**
  * Checks if a given gateway supports subscription payments.
  */
-function wpinv_gateway_support_subscription( $gateway ) {
-    return getpaid_payment_gateway_supports( $gateway, 'subscription' );
+function wpinv_gateway_support_subscription($gateway) {
+    return getpaid_payment_gateway_supports($gateway, 'subscription');
 }
 
 /**
@@ -422,14 +422,14 @@ 
  * @param array $gateways an array of gateways.
  * @param GetPaid_Payment_Form $form payment form.
  */
-function wpinv_payment_gateways_on_cart( $gateways, $form ) {
+function wpinv_payment_gateways_on_cart($gateways, $form) {
 
-    if ( $form->is_recurring() ) {
+    if ($form->is_recurring()) {
 
-        foreach ( array_keys( $gateways ) as $gateway ) {
+        foreach (array_keys($gateways) as $gateway) {
 
-            if ( ! wpinv_gateway_support_subscription( $gateway ) ) {
-                unset( $gateways[$gateway] );
+            if (!wpinv_gateway_support_subscription($gateway)) {
+                unset($gateways[$gateway]);
             }
 
         }
@@ -438,4 +438,4 @@ 
 
     return $gateways;
 }
-add_filter( 'getpaid_payment_form_gateways', 'wpinv_payment_gateways_on_cart', 10, 2 );
+add_filter('getpaid_payment_form_gateways', 'wpinv_payment_gateways_on_cart', 10, 2);

includes/gateways/class-getpaid-paypal-gateway.php

Spacing +97 added lines, -97 removed lines

@@ -4,7 +4,7 @@ 
  *
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 /**
  * Paypal Payment Gateway class.
@@ -24,7 +24,7 @@ 
 	 *
 	 * @var array
 	 */
-    protected $supports = array( 'subscription', 'sandbox', 'single_subscription_group' );
+    protected $supports = array('subscription', 'sandbox', 'single_subscription_group');
 
     /**
 	 * Payment method order.
@@ -59,7 +59,7 @@ 
 	 *
 	 * @var array
 	 */
-	public $currencies = array( 'AUD', 'BRL', 'CAD', 'MXN', 'NZD', 'HKD', 'SGD', 'USD', 'EUR', 'JPY', 'TRY', 'NOK', 'CZK', 'DKK', 'HUF', 'ILS', 'MYR', 'PHP', 'PLN', 'SEK', 'CHF', 'TWD', 'THB', 'GBP', 'RMB', 'RUB', 'INR' );
+	public $currencies = array('AUD', 'BRL', 'CAD', 'MXN', 'NZD', 'HKD', 'SGD', 'USD', 'EUR', 'JPY', 'TRY', 'NOK', 'CZK', 'DKK', 'HUF', 'ILS', 'MYR', 'PHP', 'PLN', 'SEK', 'CHF', 'TWD', 'THB', 'GBP', 'RMB', 'RUB', 'INR');
 
     /**
 	 * URL to view a transaction.
@@ -80,13 +80,13 @@ 
 	 */
 	public function __construct() {
 
-        $this->title                = __( 'PayPal Standard', 'invoicing' );
-        $this->method_title         = __( 'PayPal Standard', 'invoicing' );
-        $this->checkout_button_text = __( 'Proceed to PayPal', 'invoicing' );
-        $this->notify_url           = wpinv_get_ipn_url( $this->id );
+        $this->title                = __('PayPal Standard', 'invoicing');
+        $this->method_title         = __('PayPal Standard', 'invoicing');
+        $this->checkout_button_text = __('Proceed to PayPal', 'invoicing');
+        $this->notify_url           = wpinv_get_ipn_url($this->id);
 
-		add_filter( 'getpaid_paypal_args', array( $this, 'process_subscription' ), 10, 2 );
-        add_filter( 'getpaid_paypal_sandbox_notice', array( $this, 'sandbox_notice' ) );
+		add_filter('getpaid_paypal_args', array($this, 'process_subscription'), 10, 2);
+        add_filter('getpaid_paypal_sandbox_notice', array($this, 'sandbox_notice'));
 
         parent::__construct();
     }
@@ -100,16 +100,16 @@ 
 	 * @param GetPaid_Payment_Form_Submission $submission Checkout submission.
 	 * @return array
 	 */
-	public function process_payment( $invoice, $submission_data, $submission ) {
+	public function process_payment($invoice, $submission_data, $submission) {
 
         // Get redirect url.
-        $paypal_redirect = $this->get_request_url( $invoice );
+        $paypal_redirect = $this->get_request_url($invoice);
 
         // Add a note about the request url.
         $invoice->add_note(
             sprintf(
-                __( 'Redirecting to PayPal: %s', 'invoicing' ),
-                esc_url( $paypal_redirect )
+                __('Redirecting to PayPal: %s', 'invoicing'),
+                esc_url($paypal_redirect)
             ),
             false,
             false,
@@ -117,7 +117,7 @@ 
         );
 
         // Redirect to PayPal
-        wp_redirect( $paypal_redirect );
+        wp_redirect($paypal_redirect);
         exit;
 
     }
@@ -128,21 +128,21 @@ 
 	 * @param  WPInv_Invoice $invoice Invoice object.
 	 * @return string
 	 */
-	public function get_request_url( $invoice ) {
+	public function get_request_url($invoice) {
 
         // Endpoint for this request
-		$this->endpoint    = $this->is_sandbox( $invoice ) ? 'https://www.sandbox.paypal.com/cgi-bin/webscr?test_ipn=1&' : 'https://www.paypal.com/cgi-bin/webscr?';
+		$this->endpoint = $this->is_sandbox($invoice) ? 'https://www.sandbox.paypal.com/cgi-bin/webscr?test_ipn=1&' : 'https://www.paypal.com/cgi-bin/webscr?';
 
         // Retrieve paypal args.
-        $paypal_args       = map_deep( $this->get_paypal_args( $invoice ), 'urlencode' );
+        $paypal_args = map_deep($this->get_paypal_args($invoice), 'urlencode');
 
-        if ( $invoice->is_recurring() ) {
+        if ($invoice->is_recurring()) {
             $paypal_args['bn'] = 'GetPaid_Subscribe_WPS_US';
         } else {
             $paypal_args['bn'] = 'GetPaid_ShoppingCart_WPS_US';
         }
 
-        return add_query_arg( $paypal_args, $this->endpoint );
+        return add_query_arg($paypal_args, $this->endpoint);
 
 	}
 
@@ -152,25 +152,25 @@ 
 	 * @param  WPInv_Invoice $invoice Invoice object.
 	 * @return array
 	 */
-	protected function get_paypal_args( $invoice ) {
+	protected function get_paypal_args($invoice) {
 
         // Whether or not to send the line items as one item.
-		$force_one_line_item = apply_filters( 'getpaid_paypal_force_one_line_item', true, $invoice );
+		$force_one_line_item = apply_filters('getpaid_paypal_force_one_line_item', true, $invoice);
 
-		if ( $invoice->is_recurring() || ( wpinv_use_taxes() && wpinv_prices_include_tax() ) ) {
+		if ($invoice->is_recurring() || (wpinv_use_taxes() && wpinv_prices_include_tax())) {
 			$force_one_line_item = true;
 		}
 
 		$paypal_args = apply_filters(
 			'getpaid_paypal_args',
 			array_merge(
-				$this->get_transaction_args( $invoice ),
-				$this->get_line_item_args( $invoice, $force_one_line_item )
+				$this->get_transaction_args($invoice),
+				$this->get_line_item_args($invoice, $force_one_line_item)
 			),
 			$invoice
 		);
 
-		return $this->fix_request_length( $invoice, $paypal_args );
+		return $this->fix_request_length($invoice, $paypal_args);
     }
 
     /**
@@ -179,11 +179,11 @@ 
 	 * @param WPInv_Invoice $invoice Invoice object.
 	 * @return array
 	 */
-	protected function get_transaction_args( $invoice ) {
+	protected function get_transaction_args($invoice) {
 
 		return array(
             'cmd'           => '_cart',
-            'business'      => wpinv_get_option( 'paypal_email', false ),
+            'business'      => wpinv_get_option('paypal_email', false),
             'no_shipping'   => '1',
             'shipping'      => '0',
             'no_note'       => '1',
@@ -191,16 +191,16 @@ 
             'rm'            => is_ssl() ? 2 : 1,
             'upload'        => 1,
             'currency_code' => $invoice->get_currency(), // https://developer.paypal.com/docs/nvp-soap-api/currency-codes/#paypal
-            'return'        => esc_url_raw( $this->get_return_url( $invoice ) ),
-            'cancel_return' => esc_url_raw( $invoice->get_checkout_payment_url() ),
-            'notify_url'    => getpaid_limit_length( $this->notify_url, 255 ),
-            'invoice'       => getpaid_limit_length( $invoice->get_number(), 127 ),
+            'return'        => esc_url_raw($this->get_return_url($invoice)),
+            'cancel_return' => esc_url_raw($invoice->get_checkout_payment_url()),
+            'notify_url'    => getpaid_limit_length($this->notify_url, 255),
+            'invoice'       => getpaid_limit_length($invoice->get_number(), 127),
             'custom'        => $invoice->get_id(),
-            'first_name'    => getpaid_limit_length( $invoice->get_first_name(), 32 ),
-            'last_name'     => getpaid_limit_length( $invoice->get_last_name(), 64 ),
-            'country'       => getpaid_limit_length( $invoice->get_country(), 2 ),
-            'email'         => getpaid_limit_length( $invoice->get_email(), 127 ),
-            'cbt'           => get_bloginfo( 'name' )
+            'first_name'    => getpaid_limit_length($invoice->get_first_name(), 32),
+            'last_name'     => getpaid_limit_length($invoice->get_last_name(), 64),
+            'country'       => getpaid_limit_length($invoice->get_country(), 2),
+            'email'         => getpaid_limit_length($invoice->get_email(), 127),
+            'cbt'           => get_bloginfo('name')
         );
 
     }
@@ -212,30 +212,30 @@ 
 	 * @param  bool     $force_one_line_item Create only one item for this invoice.
 	 * @return array
 	 */
-	protected function get_line_item_args( $invoice, $force_one_line_item = false ) {
+	protected function get_line_item_args($invoice, $force_one_line_item = false) {
 
         // Maybe send invoice as a single item.
-		if ( $force_one_line_item ) {
-            return $this->get_line_item_args_single_item( $invoice );
+		if ($force_one_line_item) {
+            return $this->get_line_item_args_single_item($invoice);
         }
 
         // Send each line item individually.
         $line_item_args = array();
 
         // Prepare line items.
-        $this->prepare_line_items( $invoice );
+        $this->prepare_line_items($invoice);
 
         // Add taxes to the cart
-        if ( wpinv_use_taxes() && $invoice->is_taxable() ) {
-            $line_item_args['tax_cart'] = wpinv_sanitize_amount( (float) $invoice->get_total_tax(), 2 );
+        if (wpinv_use_taxes() && $invoice->is_taxable()) {
+            $line_item_args['tax_cart'] = wpinv_sanitize_amount((float) $invoice->get_total_tax(), 2);
         }
 
         // Add discount.
-        if ( $invoice->get_total_discount() > 0 ) {
-            $line_item_args['discount_amount_cart'] = wpinv_sanitize_amount( (float) $invoice->get_total_discount(), 2 );
+        if ($invoice->get_total_discount() > 0) {
+            $line_item_args['discount_amount_cart'] = wpinv_sanitize_amount((float) $invoice->get_total_discount(), 2);
         }
 
-		return array_merge( $line_item_args, $this->get_line_items() );
+		return array_merge($line_item_args, $this->get_line_items());
 
     }
 
@@ -245,11 +245,11 @@ 
 	 * @param  WPInv_Invoice $invoice Invoice object.
 	 * @return array
 	 */
-	protected function get_line_item_args_single_item( $invoice ) {
+	protected function get_line_item_args_single_item($invoice) {
 		$this->delete_line_items();
 
-        $item_name = sprintf( __( 'Invoice #%s', 'invoicing' ), $invoice->get_number() );
-		$this->add_line_item( $item_name, 1, wpinv_round_amount( (float) $invoice->get_total(), 2, true ), $invoice->get_id() );
+        $item_name = sprintf(__('Invoice #%s', 'invoicing'), $invoice->get_number());
+		$this->add_line_item($item_name, 1, wpinv_round_amount((float) $invoice->get_total(), 2, true), $invoice->get_id());
 
 		return $this->get_line_items();
     }
@@ -273,19 +273,19 @@ 
 	 *
 	 * @param  WPInv_Invoice $invoice Invoice object.
 	 */
-	protected function prepare_line_items( $invoice ) {
+	protected function prepare_line_items($invoice) {
 		$this->delete_line_items();
 
 		// Items.
-		foreach ( $invoice->get_items() as $item ) {
+		foreach ($invoice->get_items() as $item) {
 			$amount   = $item->get_price();
 			$quantity = $invoice->get_template() == 'amount' ? 1 : $item->get_quantity();
-			$this->add_line_item( $item->get_raw_name(), $quantity, $amount, $item->get_id() );
+			$this->add_line_item($item->get_raw_name(), $quantity, $amount, $item->get_id());
         }
 
         // Fees.
-		foreach ( $invoice->get_fees() as $fee => $data ) {
-            $this->add_line_item( $fee, 1, wpinv_sanitize_amount( $data['initial_fee'] ) );
+		foreach ($invoice->get_fees() as $fee => $data) {
+            $this->add_line_item($fee, 1, wpinv_sanitize_amount($data['initial_fee']));
         }
 
     }
@@ -298,15 +298,15 @@ 
 	 * @param  float  $amount Amount.
 	 * @param  string $item_number Item number.
 	 */
-	protected function add_line_item( $item_name, $quantity = 1, $amount = 0.0, $item_number = '' ) {
-		$index = ( count( $this->line_items ) / 4 ) + 1;
+	protected function add_line_item($item_name, $quantity = 1, $amount = 0.0, $item_number = '') {
+		$index = (count($this->line_items) / 4) + 1;
 
 		$item = apply_filters(
 			'getpaid_paypal_line_item',
 			array(
-				'item_name'   => html_entity_decode( getpaid_limit_length( $item_name ? wp_strip_all_tags( $item_name ) : __( 'Item', 'invoicing' ), 127 ), ENT_NOQUOTES, 'UTF-8' ),
+				'item_name'   => html_entity_decode(getpaid_limit_length($item_name ? wp_strip_all_tags($item_name) : __('Item', 'invoicing'), 127), ENT_NOQUOTES, 'UTF-8'),
 				'quantity'    => (float) $quantity,
-				'amount'      => wpinv_sanitize_amount( (float) $amount, 2 ),
+				'amount'      => wpinv_sanitize_amount((float) $amount, 2),
 				'item_number' => $item_number,
 			),
 			$item_name,
@@ -315,12 +315,12 @@ 
 			$item_number
 		);
 
-		$this->line_items[ 'item_name_' . $index ]   = getpaid_limit_length( $item['item_name'], 127 );
-        $this->line_items[ 'quantity_' . $index ]    = $item['quantity'];
+		$this->line_items['item_name_' . $index] = getpaid_limit_length($item['item_name'], 127);
+        $this->line_items['quantity_' . $index] = $item['quantity'];
 
         // The price or amount of the product, service, or contribution, not including shipping, handling, or tax.
-		$this->line_items[ 'amount_' . $index ]      = $item['amount'] * $item['quantity'];
-		$this->line_items[ 'item_number_' . $index ] = getpaid_limit_length( $item['item_number'], 127 );
+		$this->line_items['amount_' . $index]      = $item['amount'] * $item['quantity'];
+		$this->line_items['item_number_' . $index] = getpaid_limit_length($item['item_number'], 127);
     }
 
     /**
@@ -332,19 +332,19 @@ 
 	 * @param array    $paypal_args Arguments sent to Paypal in the request.
 	 * @return array
 	 */
-	protected function fix_request_length( $invoice, $paypal_args ) {
+	protected function fix_request_length($invoice, $paypal_args) {
 		$max_paypal_length = 2083;
-		$query_candidate   = http_build_query( $paypal_args, '', '&' );
+		$query_candidate   = http_build_query($paypal_args, '', '&');
 
-		if ( strlen( $this->endpoint . $query_candidate ) <= $max_paypal_length ) {
+		if (strlen($this->endpoint . $query_candidate) <= $max_paypal_length) {
 			return $paypal_args;
 		}
 
 		return apply_filters(
 			'getpaid_paypal_args',
 			array_merge(
-				$this->get_transaction_args( $invoice ),
-				$this->get_line_item_args( $invoice, true )
+				$this->get_transaction_args($invoice),
+				$this->get_line_item_args($invoice, true)
 			),
 			$invoice
 		);
@@ -357,10 +357,10 @@ 
 	 * @param  array $paypal_args PayPal args.
 	 * @param  WPInv_Invoice    $invoice Invoice object.
 	 */
-	public function process_subscription( $paypal_args, $invoice ) {
+	public function process_subscription($paypal_args, $invoice) {
 
         // Make sure this is a subscription.
-        if ( ! $invoice->is_recurring() || ! $subscription = getpaid_get_invoice_subscription( $invoice ) ) {
+        if (!$invoice->is_recurring() || !$subscription = getpaid_get_invoice_subscription($invoice)) {
             return $paypal_args;
         }
 
@@ -368,17 +368,17 @@ 
         $paypal_args['cmd'] = '_xclick-subscriptions';
 
         // Subscription name.
-        $paypal_args['item_name'] = sprintf( __( 'Invoice #%s', 'invoicing' ), $invoice->get_number() );
+        $paypal_args['item_name'] = sprintf(__('Invoice #%s', 'invoicing'), $invoice->get_number());
 
         // Get subscription args.
-        $period                 = strtoupper( substr( $subscription->get_period(), 0, 1) );
+        $period                 = strtoupper(substr($subscription->get_period(), 0, 1));
         $interval               = (int) $subscription->get_frequency();
         $bill_times             = (int) $subscription->get_bill_times();
-        $initial_amount         = (float) wpinv_sanitize_amount( $invoice->get_initial_total(), 2 );
-        $recurring_amount       = (float) wpinv_sanitize_amount( $invoice->get_recurring_total(), 2 );
-        $subscription_item      = $invoice->get_recurring( true );
+        $initial_amount         = (float) wpinv_sanitize_amount($invoice->get_initial_total(), 2);
+        $recurring_amount       = (float) wpinv_sanitize_amount($invoice->get_recurring_total(), 2);
+        $subscription_item      = $invoice->get_recurring(true);
 
-        if ( $subscription_item->has_free_trial() ) {
+        if ($subscription_item->has_free_trial()) {
 
             $paypal_args['a1'] = 0 == $initial_amount ? 0 : $initial_amount;
 
@@ -388,28 +388,28 @@ 
 			// Trial period.
 			$paypal_args['t1'] = $subscription_item->get_trial_period();
 
-        } else if ( $initial_amount != $recurring_amount ) {
+        } else if ($initial_amount != $recurring_amount) {
 
             // No trial period, but initial amount includes a sign-up fee and/or other items, so charge it as a separate period.
 
-            if ( 1 == $bill_times ) {
+            if (1 == $bill_times) {
                 $param_number = 3;
             } else {
                 $param_number = 1;
             }
 
-            $paypal_args[ 'a' . $param_number ] = $initial_amount ? $initial_amount : 0;
+            $paypal_args['a' . $param_number] = $initial_amount ? $initial_amount : 0;
 
             // Sign Up interval
-            $paypal_args[ 'p' . $param_number ] = $interval;
+            $paypal_args['p' . $param_number] = $interval;
 
             // Sign Up unit of duration
-            $paypal_args[ 't' . $param_number ] = $period;
+            $paypal_args['t' . $param_number] = $period;
 
         }
 
         // We have a recurring payment
-		if ( ! isset( $param_number ) || 1 == $param_number ) {
+		if (!isset($param_number) || 1 == $param_number) {
 
 			// Subscription price
 			$paypal_args['a3'] = $recurring_amount;
@@ -423,7 +423,7 @@ 
         }
 
         // Recurring payments
-		if ( 1 == $bill_times || ( $initial_amount != $recurring_amount && ! $subscription_item->has_free_trial() && 2 == $bill_times ) ) {
+		if (1 == $bill_times || ($initial_amount != $recurring_amount && !$subscription_item->has_free_trial() && 2 == $bill_times)) {
 
 			// Non-recurring payments
 			$paypal_args['src'] = 0;
@@ -432,15 +432,15 @@ 
 
 			$paypal_args['src'] = 1;
 
-			if ( $bill_times > 0 ) {
+			if ($bill_times > 0) {
 
 				// An initial period is being used to charge a sign-up fee
-				if ( $initial_amount != $recurring_amount && ! $subscription_item->has_free_trial() ) {
+				if ($initial_amount != $recurring_amount && !$subscription_item->has_free_trial()) {
 					$bill_times--;
 				}
 
                 // Make sure it's not over the max of 52
-                $paypal_args['srt'] = ( $bill_times <= 52 ? absint( $bill_times ) : 52 );
+                $paypal_args['srt'] = ($bill_times <= 52 ? absint($bill_times) : 52);
 
 			}
         }
@@ -449,10 +449,10 @@ 
         $paypal_args['rm'] = 2;
 
         // Get rid of redudant items.
-        foreach ( array( 'item_name_1', 'quantity_1', 'amount_1', 'item_number_1' ) as $arg ) {
+        foreach (array('item_name_1', 'quantity_1', 'amount_1', 'item_number_1') as $arg) {
 
-            if ( isset( $paypal_args[ $arg ] ) ) {
-                unset( $paypal_args[ $arg ] );
+            if (isset($paypal_args[$arg])) {
+                unset($paypal_args[$arg]);
             }
 
         }
@@ -471,7 +471,7 @@ 
 	 * @return void
 	 */
 	public function verify_ipn() {
-        new GetPaid_Paypal_Gateway_IPN_Handler( $this );
+        new GetPaid_Paypal_Gateway_IPN_Handler($this);
     }
 
     /**
@@ -480,7 +480,7 @@ 
     public function sandbox_notice() {
 
         return sprintf(
-			__( 'SANDBOX ENABLED. You can use sandbox testing accounts only. See the %sPayPal Sandbox Testing Guide%s for more details.', 'invoicing' ),
+			__('SANDBOX ENABLED. You can use sandbox testing accounts only. See the %sPayPal Sandbox Testing Guide%s for more details.', 'invoicing'),
 			'<a href="https://developer.paypal.com/docs/classic/lifecycle/ug_sandbox/">',
 			'</a>'
 		);
@@ -492,29 +492,29 @@ 
 	 *
 	 * @param array $admin_settings
 	 */
-	public function admin_settings( $admin_settings ) {
+	public function admin_settings($admin_settings) {
 
         $currencies = sprintf(
-            __( 'Supported Currencies: %s', 'invoicing' ),
-            implode( ', ', $this->currencies )
+            __('Supported Currencies: %s', 'invoicing'),
+            implode(', ', $this->currencies)
         );
 
         $admin_settings['paypal_active']['desc'] .= " ($currencies)";
-        $admin_settings['paypal_desc']['std']     = __( 'Pay via PayPal: you can pay with your credit card if you don\'t have a PayPal account.', 'invoicing' );
+        $admin_settings['paypal_desc']['std']     = __('Pay via PayPal: you can pay with your credit card if you don\'t have a PayPal account.', 'invoicing');
 
         $admin_settings['paypal_email'] = array(
             'type' => 'text',
             'id'   => 'paypal_email',
-            'name' => __( 'PayPal Email', 'invoicing' ),
-            'desc' => __( "Please enter your PayPal account's email address. Use your sandbox email address in case you've enabled sandbox above.", 'invoicing' ),
+            'name' => __('PayPal Email', 'invoicing'),
+            'desc' => __("Please enter your PayPal account's email address. Use your sandbox email address in case you've enabled sandbox above.", 'invoicing'),
         );
 
         $admin_settings['paypal_ipn_url'] = array(
             'type'     => 'ipn_url',
             'id'       => 'paypal_ipn_url',
-            'name'     => __( 'IPN Url', 'invoicing' ),
+            'name'     => __('IPN Url', 'invoicing'),
             'std'      => $this->notify_url,
-            'desc'     => __( "If you've not enabled IPNs in your paypal account, use the above URL to enable them.", 'invoicing' ) . ' <a href="https://developer.paypal.com/docs/api-basics/notifications/ipn/"><em>' . __( 'Learn more.', 'invoicing' ) . '</em></a>',
+            'desc'     => __("If you've not enabled IPNs in your paypal account, use the above URL to enable them.", 'invoicing') . ' <a href="https://developer.paypal.com/docs/api-basics/notifications/ipn/"><em>' . __('Learn more.', 'invoicing') . '</em></a>',
             'readonly' => true,
         );