AyeCode / invoicing

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

Indentation +223 added lines, -223 removed lines

@@ -13,94 +13,94 @@ 
 class GetPaid_Paypal_Gateway extends GetPaid_Payment_Gateway {
 
     /**
-	 * Payment method id.
-	 *
-	 * @var string
-	 */
+     * Payment method id.
+     *
+     * @var string
+     */
     public $id = 'paypal';
 
     /**
-	 * An array of features that this gateway supports.
-	 *
-	 * @var array
-	 */
+     * An array of features that this gateway supports.
+     *
+     * @var array
+     */
     protected $supports = array( 'subscription', 'sandbox', 'single_subscription_group' );
 
     /**
-	 * Payment method order.
-	 *
-	 * @var int
-	 */
+     * Payment method order.
+     *
+     * @var int
+     */
     public $order = 1;
 
     /**
-	 * Stores line items to send to PayPal.
-	 *
-	 * @var array
-	 */
+     * Stores line items to send to PayPal.
+     *
+     * @var array
+     */
     protected $line_items = array();
 
     /**
-	 * Endpoint for requests from PayPal.
-	 *
-	 * @var string
-	 */
-	protected $notify_url;
-
-	/**
-	 * Endpoint for requests to PayPal.
-	 *
-	 * @var string
-	 */
+     * Endpoint for requests from PayPal.
+     *
+     * @var string
+     */
+    protected $notify_url;
+
+    /**
+     * Endpoint for requests to PayPal.
+     *
+     * @var string
+     */
     protected $endpoint;
 
     /**
-	 * Currencies this gateway is allowed for.
-	 *
-	 * @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' );
+     * Currencies this gateway is allowed for.
+     *
+     * @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' );
 
     /**
-	 * URL to view a transaction.
-	 *
-	 * @var string
-	 */
+     * URL to view a transaction.
+     *
+     * @var string
+     */
     public $view_transaction_url = 'https://www.{sandbox}paypal.com/activity/payment/%s';
 
     /**
-	 * URL to view a subscription.
-	 *
-	 * @var string
-	 */
-	public $view_subscription_url = 'https://www.{sandbox}paypal.com/cgi-bin/webscr?cmd=_profile-recurring-payments&encrypted_profile_id=%s';
+     * URL to view a subscription.
+     *
+     * @var string
+     */
+    public $view_subscription_url = 'https://www.{sandbox}paypal.com/cgi-bin/webscr?cmd=_profile-recurring-payments&encrypted_profile_id=%s';
 
     /**
-	 * Class constructor.
-	 */
-	public function __construct() {
+     * Class constructor.
+     */
+    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 );
 
-		add_filter( 'getpaid_paypal_args', array( $this, 'process_subscription' ), 10, 2 );
+        add_filter( 'getpaid_paypal_args', array( $this, 'process_subscription' ), 10, 2 );
         add_filter( 'getpaid_paypal_sandbox_notice', array( $this, 'sandbox_notice' ) );
 
         parent::__construct();
     }
 
     /**
-	 * Process Payment.
-	 *
-	 *
-	 * @param WPInv_Invoice $invoice Invoice.
-	 * @param array $submission_data Posted checkout fields.
-	 * @param GetPaid_Payment_Form_Submission $submission Checkout submission.
-	 * @return array
-	 */
-	public function process_payment( $invoice, $submission_data, $submission ) {
+     * Process Payment.
+     *
+     *
+     * @param WPInv_Invoice $invoice Invoice.
+     * @param array $submission_data Posted checkout fields.
+     * @param GetPaid_Payment_Form_Submission $submission Checkout submission.
+     * @return array
+     */
+    public function process_payment( $invoice, $submission_data, $submission ) {
 
         // Get redirect url.
         $paypal_redirect = $this->get_request_url( $invoice );
@@ -123,15 +123,15 @@ 
     }
 
     /**
-	 * Get the PayPal request URL for an invoice.
-	 *
-	 * @param  WPInv_Invoice $invoice Invoice object.
-	 * @return string
-	 */
-	public function get_request_url( $invoice ) {
+     * Get the PayPal request URL for an invoice.
+     *
+     * @param  WPInv_Invoice $invoice Invoice object.
+     * @return string
+     */
+    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' );
@@ -144,44 +144,44 @@ 
 
         return add_query_arg( $paypal_args, $this->endpoint );
 
-	}
+    }
 
     /**
-	 * Get PayPal Args for passing to PP.
-	 *
-	 * @param  WPInv_Invoice $invoice Invoice object.
-	 * @return array
-	 */
-	protected function get_paypal_args( $invoice ) {
+     * Get PayPal Args for passing to PP.
+     *
+     * @param  WPInv_Invoice $invoice Invoice object.
+     * @return array
+     */
+    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', false, $invoice );
-
-		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 )
-			),
-			$invoice
-		);
-
-		return $this->fix_request_length( $invoice, $paypal_args );
+        $force_one_line_item = apply_filters( 'getpaid_paypal_force_one_line_item', false, $invoice );
+
+        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 )
+            ),
+            $invoice
+        );
+
+        return $this->fix_request_length( $invoice, $paypal_args );
     }
 
     /**
-	 * Get transaction args for paypal request.
-	 *
-	 * @param WPInv_Invoice $invoice Invoice object.
-	 * @return array
-	 */
-	protected function get_transaction_args( $invoice ) {
-
-		return array(
+     * Get transaction args for paypal request.
+     *
+     * @param WPInv_Invoice $invoice Invoice object.
+     * @return array
+     */
+    protected function get_transaction_args( $invoice ) {
+
+        return array(
             'cmd'           => '_cart',
             'business'      => wpinv_get_option( 'paypal_email', false ),
             'no_shipping'   => '1',
@@ -206,16 +206,16 @@ 
     }
 
     /**
-	 * Get line item args for paypal request.
-	 *
-	 * @param  WPInv_Invoice $invoice Invoice object.
-	 * @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 ) {
+     * Get line item args for paypal request.
+     *
+     * @param  WPInv_Invoice $invoice Invoice object.
+     * @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 ) {
 
         // Maybe send invoice as a single item.
-		if ( $force_one_line_item ) {
+        if ( $force_one_line_item ) {
             return $this->get_line_item_args_single_item( $invoice );
         }
 
@@ -235,129 +235,129 @@ 
             $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() );
 
     }
 
     /**
-	 * Get line item args for paypal request as a single line item.
-	 *
-	 * @param  WPInv_Invoice $invoice Invoice object.
-	 * @return array
-	 */
-	protected function get_line_item_args_single_item( $invoice ) {
-		$this->delete_line_items();
+     * Get line item args for paypal request as a single line item.
+     *
+     * @param  WPInv_Invoice $invoice Invoice object.
+     * @return array
+     */
+    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() );
+        $this->add_line_item( $item_name, 1, wpinv_round_amount( (float) $invoice->get_total(), 2, true ), $invoice->get_id() );
 
-		return $this->get_line_items();
+        return $this->get_line_items();
     }
 
     /**
-	 * Return all line items.
-	 */
-	protected function get_line_items() {
-		return $this->line_items;
-	}
+     * Return all line items.
+     */
+    protected function get_line_items() {
+        return $this->line_items;
+    }
 
     /**
-	 * Remove all line items.
-	 */
-	protected function delete_line_items() {
-		$this->line_items = array();
+     * Remove all line items.
+     */
+    protected function delete_line_items() {
+        $this->line_items = array();
     }
 
     /**
-	 * Prepare line items to send to paypal.
-	 *
-	 * @param  WPInv_Invoice $invoice Invoice object.
-	 */
-	protected function prepare_line_items( $invoice ) {
-		$this->delete_line_items();
-
-		// Items.
-		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() );
+     * Prepare line items to send to paypal.
+     *
+     * @param  WPInv_Invoice $invoice Invoice object.
+     */
+    protected function prepare_line_items( $invoice ) {
+        $this->delete_line_items();
+
+        // Items.
+        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() );
         }
 
         // Fees.
-		foreach ( $invoice->get_fees() as $fee => $data ) {
+        foreach ( $invoice->get_fees() as $fee => $data ) {
             $this->add_line_item( $fee, 1, wpinv_sanitize_amount( $data['initial_fee'] ) );
         }
 
     }
 
     /**
-	 * Add PayPal Line Item.
-	 *
-	 * @param  string $item_name Item name.
-	 * @param  int    $quantity Item quantity.
-	 * @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;
-
-		$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' ),
-				'quantity'    => (float) $quantity,
-				'amount'      => wpinv_sanitize_amount( (float) $amount, 2 ),
-				'item_number' => $item_number,
-			),
-			$item_name,
-			$quantity,
-			$amount,
-			$item_number
-		);
-
-		$this->line_items[ 'item_name_' . $index ]   = getpaid_limit_length( $item['item_name'], 127 );
+     * Add PayPal Line Item.
+     *
+     * @param  string $item_name Item name.
+     * @param  int    $quantity Item quantity.
+     * @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;
+
+        $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' ),
+                'quantity'    => (float) $quantity,
+                'amount'      => wpinv_sanitize_amount( (float) $amount, 2 ),
+                'item_number' => $item_number,
+            ),
+            $item_name,
+            $quantity,
+            $amount,
+            $item_number
+        );
+
+        $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'];
-		$this->line_items[ 'item_number_' . $index ] = getpaid_limit_length( $item['item_number'], 127 );
+        $this->line_items[ 'amount_' . $index ]      = $item['amount'];
+        $this->line_items[ 'item_number_' . $index ] = getpaid_limit_length( $item['item_number'], 127 );
     }
 
     /**
-	 * If the default request with line items is too long, generate a new one with only one line item.
-	 *
-	 * https://support.microsoft.com/en-us/help/208427/maximum-url-length-is-2-083-characters-in-internet-explorer.
-	 *
-	 * @param WPInv_Invoice $invoice Invoice to be sent to Paypal.
-	 * @param array    $paypal_args Arguments sent to Paypal in the request.
-	 * @return array
-	 */
-	protected function fix_request_length( $invoice, $paypal_args ) {
-		$max_paypal_length = 2083;
-		$query_candidate   = http_build_query( $paypal_args, '', '&' );
-
-		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 )
-			),
-			$invoice
-		);
+     * If the default request with line items is too long, generate a new one with only one line item.
+     *
+     * https://support.microsoft.com/en-us/help/208427/maximum-url-length-is-2-083-characters-in-internet-explorer.
+     *
+     * @param WPInv_Invoice $invoice Invoice to be sent to Paypal.
+     * @param array    $paypal_args Arguments sent to Paypal in the request.
+     * @return array
+     */
+    protected function fix_request_length( $invoice, $paypal_args ) {
+        $max_paypal_length = 2083;
+        $query_candidate   = http_build_query( $paypal_args, '', '&' );
+
+        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 )
+            ),
+            $invoice
+        );
 
     }
 
     /**
-	 * Processes recurring invoices.
-	 *
-	 * @param  array $paypal_args PayPal args.
-	 * @param  WPInv_Invoice    $invoice Invoice object.
-	 */
-	public function process_subscription( $paypal_args, $invoice ) {
+     * Processes recurring invoices.
+     *
+     * @param  array $paypal_args PayPal args.
+     * @param  WPInv_Invoice    $invoice Invoice object.
+     */
+    public function process_subscription( $paypal_args, $invoice ) {
 
         // Make sure this is a subscription.
         if ( ! $invoice->is_recurring() || ! $subscription = getpaid_get_invoice_subscription( $invoice ) ) {
@@ -382,11 +382,11 @@ 
 
             $paypal_args['a1'] = 0 == $initial_amount ? 0 : $initial_amount;
 
-			// Trial period length.
-			$paypal_args['p1'] = $subscription_item->get_trial_interval();
+            // Trial period length.
+            $paypal_args['p1'] = $subscription_item->get_trial_interval();
 
-			// Trial period.
-			$paypal_args['t1'] = $subscription_item->get_trial_period();
+            // Trial period.
+            $paypal_args['t1'] = $subscription_item->get_trial_period();
 
         } else if ( $initial_amount != $recurring_amount ) {
 
@@ -409,40 +409,40 @@ 
         }
 
         // 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;
+            // Subscription price
+            $paypal_args['a3'] = $recurring_amount;
 
-			// Subscription duration
-			$paypal_args['p3'] = $interval;
+            // Subscription duration
+            $paypal_args['p3'] = $interval;
 
-			// Subscription period
-			$paypal_args['t3'] = $period;
+            // Subscription period
+            $paypal_args['t3'] = $period;
 
         }
 
         // 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;
+            // Non-recurring payments
+            $paypal_args['src'] = 0;
 
-		} else {
+        } else {
 
-			$paypal_args['src'] = 1;
+            $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() ) {
-					$bill_times--;
-				}
+                // An initial period is being used to charge a sign-up fee
+                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 );
 
-			}
+            }
         }
 
         // Force return URL so that order description & instructions display
@@ -458,19 +458,19 @@ 
         }
 wpinv_error_log( $paypal_args );
         return apply_filters(
-			'getpaid_paypal_subscription_args',
-			$paypal_args,
-			$invoice
+            'getpaid_paypal_subscription_args',
+            $paypal_args,
+            $invoice
         );
 
     }
 
     /**
-	 * Processes ipns and marks payments as complete.
-	 *
-	 * @return void
-	 */
-	public function verify_ipn() {
+     * Processes ipns and marks payments as complete.
+     *
+     * @return void
+     */
+    public function verify_ipn() {
         new GetPaid_Paypal_Gateway_IPN_Handler( $this );
     }
 
@@ -480,10 +480,10 @@ 
     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' ),
-			'<a href="https://developer.paypal.com/docs/classic/lifecycle/ug_sandbox/">',
-			'</a>'
-		);
+            __( '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>'
+        );
 
     }
 

Spacing +90 added lines, -90 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', false, $invoice );
+		$force_one_line_item = apply_filters('getpaid_paypal_force_one_line_item', false, $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'];
-		$this->line_items[ 'item_number_' . $index ] = getpaid_limit_length( $item['item_number'], 127 );
+		$this->line_items['amount_' . $index]      = $item['amount'];
+		$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);
 
 			}
         }
@@ -449,14 +449,14 @@ 
         $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]);
             }
 
         }
-wpinv_error_log( $paypal_args );
+wpinv_error_log($paypal_args);
         return apply_filters(
 			'getpaid_paypal_subscription_args',
 			$paypal_args,
@@ -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>'
 		);