AyeCode / invoicing

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

Spacing +151 added lines, -151 removed lines

@@ -4,7 +4,7 @@ 
  *
  */
 
-defined( 'ABSPATH' ) || exit;
+defined('ABSPATH') || exit;
 
 /**
  * Paypal Payment Gateway IPN handler class.
@@ -31,7 +31,7 @@ 
 	 *
 	 * @param GetPaid_Paypal_Gateway $gateway
 	 */
-	public function __construct( $gateway ) {
+	public function __construct($gateway) {
 		$this->gateway = $gateway;
 		$this->verify_ipn();
 	}
@@ -43,37 +43,37 @@ 
 	 */
 	public function verify_ipn() {
 
-		wpinv_error_log( 'GetPaid PayPal IPN Handler', false );
+		wpinv_error_log('GetPaid PayPal IPN Handler', false);
 
 		// Validate the IPN.
-		if ( empty( $_POST ) || ! $this->validate_ipn() ) {
-			wp_die( 'PayPal IPN Request Failure', 500 );
+		if (empty($_POST) || !$this->validate_ipn()) {
+			wp_die('PayPal IPN Request Failure', 500);
 		}
 
 		// Process the IPN.
-		$posted  = wp_unslash( $_POST );
-		$invoice = $this->get_ipn_invoice( $posted );
+		$posted  = wp_unslash($_POST);
+		$invoice = $this->get_ipn_invoice($posted);
 
 		// Abort if it was not paid by our gateway.
-		if ( $this->id != $invoice->get_gateway() ) {
-			wpinv_error_log( 'Aborting, Invoice was not paid via PayPal', false );
-			wp_die( 'Invoice not paid via PayPal', 200 );
+		if ($this->id != $invoice->get_gateway()) {
+			wpinv_error_log('Aborting, Invoice was not paid via PayPal', false);
+			wp_die('Invoice not paid via PayPal', 200);
 		}
 
-		$posted['payment_status'] = isset( $posted['payment_status'] ) ? sanitize_key( strtolower( $posted['payment_status'] ) ) : '';
-		$posted['txn_type']       = sanitize_key( strtolower( $posted['txn_type'] ) );
+		$posted['payment_status'] = isset($posted['payment_status']) ? sanitize_key(strtolower($posted['payment_status'])) : '';
+		$posted['txn_type']       = sanitize_key(strtolower($posted['txn_type']));
 
-		wpinv_error_log( 'Payment status:' . $posted['payment_status'], false );
-		wpinv_error_log( 'IPN Type:' . $posted['txn_type'], false );
+		wpinv_error_log('Payment status:' . $posted['payment_status'], false);
+		wpinv_error_log('IPN Type:' . $posted['txn_type'], false);
 
-		if ( method_exists( $this, 'ipn_txn_' . $posted['txn_type'] ) ) {
-			call_user_func( array( $this, 'ipn_txn_' . $posted['txn_type'] ), $invoice, $posted );
-			wpinv_error_log( 'Done processing IPN', false );
-			wp_die( 'Processed', 200 );
+		if (method_exists($this, 'ipn_txn_' . $posted['txn_type'])) {
+			call_user_func(array($this, 'ipn_txn_' . $posted['txn_type']), $invoice, $posted);
+			wpinv_error_log('Done processing IPN', false);
+			wp_die('Processed', 200);
 		}
 
-		wpinv_error_log( 'Aborting, Unsupported IPN type:' . $posted['txn_type'], false );
-		wp_die( 'Unsupported IPN type', 200 );
+		wpinv_error_log('Aborting, Unsupported IPN type:' . $posted['txn_type'], false);
+		wp_die('Unsupported IPN type', 200);
 
 	}
 
@@ -83,21 +83,21 @@ 
 	 * @param array $posted
 	 * @return WPInv_Invoice
 	 */
-	protected function get_ipn_invoice( $posted ) {
+	protected function get_ipn_invoice($posted) {
 
-		wpinv_error_log( 'Retrieving PayPal IPN Response Invoice', false );
+		wpinv_error_log('Retrieving PayPal IPN Response Invoice', false);
 
-		if ( ! empty( $posted['custom'] ) ) {
-			$invoice = new WPInv_Invoice( $posted['custom'] );
+		if (!empty($posted['custom'])) {
+			$invoice = new WPInv_Invoice($posted['custom']);
 
-			if ( $invoice->exists() ) {
-				wpinv_error_log( 'Found invoice #' . $invoice->get_number(), false );
+			if ($invoice->exists()) {
+				wpinv_error_log('Found invoice #' . $invoice->get_number(), false);
 				return $invoice;
 			}
 		}
 
-		wpinv_error_log( 'Could not retrieve the associated invoice.', false );
-		wp_die( 'Could not retrieve the associated invoice.', 200 );
+		wpinv_error_log('Could not retrieve the associated invoice.', false);
+		wp_die('Could not retrieve the associated invoice.', 200);
 	}
 
 	/**
@@ -105,14 +105,14 @@ 
 	 */
 	protected function validate_ipn() {
 
-		wpinv_error_log( 'Validating PayPal IPN response', false );
+		wpinv_error_log('Validating PayPal IPN response', false);
 
 		// Retrieve the associated invoice.
-		$posted  = wp_unslash( $_POST );
-		$invoice = $this->get_ipn_invoice( $posted );
+		$posted  = wp_unslash($_POST);
+		$invoice = $this->get_ipn_invoice($posted);
 
-		if ( $this->gateway->is_sandbox( $invoice ) ) {
-			wpinv_error_log( $posted, 'Invoice was processed in sandbox hence logging the posted data', false );
+		if ($this->gateway->is_sandbox($invoice)) {
+			wpinv_error_log($posted, 'Invoice was processed in sandbox hence logging the posted data', false);
 		}
 
 		// Validate the IPN.
@@ -129,20 +129,20 @@ 
 		);
 
 		// Post back to get a response.
-		$response = wp_safe_remote_post( $this->gateway->is_sandbox( $invoice ) ? 'https://www.sandbox.paypal.com/cgi-bin/webscr' : 'https://www.paypal.com/cgi-bin/webscr', $params );
+		$response = wp_safe_remote_post($this->gateway->is_sandbox($invoice) ? 'https://www.sandbox.paypal.com/cgi-bin/webscr' : 'https://www.paypal.com/cgi-bin/webscr', $params);
 
 		// Check to see if the request was valid.
-		if ( ! is_wp_error( $response ) && $response['response']['code'] < 300 && strstr( $response['body'], 'VERIFIED' ) ) {
-			wpinv_error_log( 'Received valid response from PayPal IPN: ' . $response['body'], false );
+		if (!is_wp_error($response) && $response['response']['code'] < 300 && strstr($response['body'], 'VERIFIED')) {
+			wpinv_error_log('Received valid response from PayPal IPN: ' . $response['body'], false);
 			return true;
 		}
 
-		if ( is_wp_error( $response ) ) {
-			wpinv_error_log( $response->get_error_message(), 'Received invalid response from PayPal IPN' );
+		if (is_wp_error($response)) {
+			wpinv_error_log($response->get_error_message(), 'Received invalid response from PayPal IPN');
 			return false;
 		}
 
-		wpinv_error_log( $response['body'], 'Received invalid response from PayPal IPN' );
+		wpinv_error_log($response['body'], 'Received invalid response from PayPal IPN');
 		return false;
 
 	}
@@ -153,17 +153,17 @@ 
 	 * @param WPInv_Invoice $invoice          Invoice object.
 	 * @param string   $currency currency to validate.
 	 */
-	protected function validate_ipn_currency( $invoice, $currency ) {
+	protected function validate_ipn_currency($invoice, $currency) {
 
-		if ( strtolower( $invoice->get_currency() ) !== strtolower( $currency ) ) {
+		if (strtolower($invoice->get_currency()) !== strtolower($currency)) {
 
 			/* translators: %s: currency code. */
-			$invoice->update_status( 'wpi-processing', sprintf( __( 'Validation error: PayPal currencies do not match (code %s).', 'invoicing' ), $currency ) );
+			$invoice->update_status('wpi-processing', sprintf(__('Validation error: PayPal currencies do not match (code %s).', 'invoicing'), $currency));
 
-			wpinv_error_log( "Currencies do not match: {$currency} instead of {$invoice->get_currency()}", 'IPN Error', __FILE__, __LINE__, true );
+			wpinv_error_log("Currencies do not match: {$currency} instead of {$invoice->get_currency()}", 'IPN Error', __FILE__, __LINE__, true);
 		}
 
-		wpinv_error_log( $currency, 'Validated IPN Currency', false );
+		wpinv_error_log($currency, 'Validated IPN Currency', false);
 	}
 
 	/**
@@ -172,16 +172,16 @@ 
 	 * @param WPInv_Invoice $invoice          Invoice object.
 	 * @param float   $amount amount to validate.
 	 */
-	protected function validate_ipn_amount( $invoice, $amount ) {
-		if ( number_format( $invoice->get_total(), 2, '.', '' ) !== number_format( $amount, 2, '.', '' ) ) {
+	protected function validate_ipn_amount($invoice, $amount) {
+		if (number_format($invoice->get_total(), 2, '.', '') !== number_format($amount, 2, '.', '')) {
 
 			/* translators: %s: Amount. */
-			$invoice->update_status( 'wpi-processing', sprintf( __( 'Validation error: PayPal amounts do not match (gross %s).', 'invoicing' ), $amount ) );
+			$invoice->update_status('wpi-processing', sprintf(__('Validation error: PayPal amounts do not match (gross %s).', 'invoicing'), $amount));
 
-			wpinv_error_log( "Amounts do not match: {$amount} instead of {$invoice->get_total()}", 'IPN Error', __FILE__, __LINE__, true );
+			wpinv_error_log("Amounts do not match: {$amount} instead of {$invoice->get_total()}", 'IPN Error', __FILE__, __LINE__, true);
 		}
 
-		wpinv_error_log( $amount, 'Validated IPN Amount', false );
+		wpinv_error_log($amount, 'Validated IPN Amount', false);
 	}
 
 	/**
@@ -190,19 +190,19 @@ 
 	 * @param WPInv_Invoice $invoice          Invoice object.
 	 * @param string   $receiver_email Email to validate.
 	 */
-	protected function validate_ipn_receiver_email( $invoice, $receiver_email ) {
-		$paypal_email = wpinv_get_option( 'paypal_email' );
+	protected function validate_ipn_receiver_email($invoice, $receiver_email) {
+		$paypal_email = wpinv_get_option('paypal_email');
 
-		if ( $receiver_email && strcasecmp( trim( $receiver_email ), trim( $paypal_email ) ) !== 0 ) {
-			wpinv_record_gateway_error( 'IPN Error', "IPN Response is for another account: {$receiver_email}. Your email is {$paypal_email}" );
+		if ($receiver_email && strcasecmp(trim($receiver_email), trim($paypal_email)) !== 0) {
+			wpinv_record_gateway_error('IPN Error', "IPN Response is for another account: {$receiver_email}. Your email is {$paypal_email}");
 
 			/* translators: %s: email address . */
-			$invoice->update_status( 'wpi-processing', sprintf( __( 'Validation error: PayPal IPN response from a different email address (%s).', 'invoicing' ), $receiver_email ) );
+			$invoice->update_status('wpi-processing', sprintf(__('Validation error: PayPal IPN response from a different email address (%s).', 'invoicing'), $receiver_email));
 
-			return wpinv_error_log( "IPN Response is for another account: {$receiver_email}. Your email is {$paypal_email}", 'IPN Error', __FILE__, __LINE__, true );
+			return wpinv_error_log("IPN Response is for another account: {$receiver_email}. Your email is {$paypal_email}", 'IPN Error', __FILE__, __LINE__, true);
 		}
 
-		wpinv_error_log( 'Validated PayPal Email', false );
+		wpinv_error_log('Validated PayPal Email', false);
 	}
 
 	/**
@@ -211,70 +211,70 @@ 
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 * @param array    $posted Posted data.
 	 */
-	protected function ipn_txn_web_accept( $invoice, $posted ) {
+	protected function ipn_txn_web_accept($invoice, $posted) {
 
 		// Collect payment details
-		$payment_status = strtolower( $posted['payment_status'] );
-		$business_email = isset( $posted['business'] ) && is_email( $posted['business'] ) ? trim( $posted['business'] ) : trim( $posted['receiver_email'] );
+		$payment_status = strtolower($posted['payment_status']);
+		$business_email = isset($posted['business']) && is_email($posted['business']) ? trim($posted['business']) : trim($posted['receiver_email']);
 
-		$this->validate_ipn_receiver_email( $invoice, $business_email );
-		$this->validate_ipn_currency( $invoice, $posted['mc_currency'] );
+		$this->validate_ipn_receiver_email($invoice, $business_email);
+		$this->validate_ipn_currency($invoice, $posted['mc_currency']);
 
 		// Update the transaction id.
-		if ( ! empty( $posted['txn_id'] ) ) {
-			$invoice->set_transaction_id( wpinv_clean( $posted['txn_id'] ) );
+		if (!empty($posted['txn_id'])) {
+			$invoice->set_transaction_id(wpinv_clean($posted['txn_id']));
 			$invoice->save();
 		}
 
-		$invoice->add_system_note( __( 'Processing invoice IPN', 'invoicing' ) );
+		$invoice->add_system_note(__('Processing invoice IPN', 'invoicing'));
 
 		// Process a refund.
-		if ( 'refunded' === $payment_status || 'reversed' === $payment_status ) {
+		if ('refunded' === $payment_status || 'reversed' === $payment_status) {
 
-			update_post_meta( $invoice->get_id(), 'refunded_remotely', 1 );
+			update_post_meta($invoice->get_id(), 'refunded_remotely', 1);
 
-			if ( ! $invoice->is_refunded() ) {
-				$invoice->update_status( 'wpi-refunded', $posted['reason_code'] );
+			if (!$invoice->is_refunded()) {
+				$invoice->update_status('wpi-refunded', $posted['reason_code']);
 			}
 
-			return wpinv_error_log( $posted['reason_code'], false );
+			return wpinv_error_log($posted['reason_code'], false);
 		}
 
 		// Process payments.
-		if ( 'completed' === $payment_status ) {
+		if ('completed' === $payment_status) {
 
-			if ( $invoice->is_paid() && 'wpi_processing' != $invoice->get_status() ) {
-				return wpinv_error_log( 'Aborting, Invoice #' . $invoice->get_number() . ' is already paid.', false );
+			if ($invoice->is_paid() && 'wpi_processing' != $invoice->get_status()) {
+				return wpinv_error_log('Aborting, Invoice #' . $invoice->get_number() . ' is already paid.', false);
 			}
 
-			$this->validate_ipn_amount( $invoice, $posted['mc_gross'] );
+			$this->validate_ipn_amount($invoice, $posted['mc_gross']);
 
 			$note = '';
 
-			if ( ! empty( $posted['mc_fee'] ) ) {
-				$note = sprintf( __( 'PayPal Transaction Fee %s.', 'invoicing' ), sanitize_text_field( $posted['mc_fee'] ) );
+			if (!empty($posted['mc_fee'])) {
+				$note = sprintf(__('PayPal Transaction Fee %s.', 'invoicing'), sanitize_text_field($posted['mc_fee']));
 			}
 
-			if ( ! empty( $posted['payer_status'] ) ) {
-				$note = ' ' . sprintf( __( 'Buyer status %s.', 'invoicing' ), sanitize_text_field( $posted['payer_status'] ) );
+			if (!empty($posted['payer_status'])) {
+				$note = ' ' . sprintf(__('Buyer status %s.', 'invoicing'), sanitize_text_field($posted['payer_status']));
 			}
 
-			$invoice->mark_paid( ( ! empty( $posted['txn_id'] ) ? sanitize_text_field( $posted['txn_id'] ) : '' ), trim( $note ) );
-			return wpinv_error_log( 'Invoice marked as paid.', false );
+			$invoice->mark_paid((!empty($posted['txn_id']) ? sanitize_text_field($posted['txn_id']) : ''), trim($note));
+			return wpinv_error_log('Invoice marked as paid.', false);
 
 		}
 
 		// Pending payments.
-		if ( 'pending' === $payment_status ) {
+		if ('pending' === $payment_status) {
 
 			/* translators: %s: pending reason. */
-			$invoice->update_status( 'wpi-onhold', sprintf( __( 'Payment pending (%s).', 'invoicing' ), $posted['pending_reason'] ) );
+			$invoice->update_status('wpi-onhold', sprintf(__('Payment pending (%s).', 'invoicing'), $posted['pending_reason']));
 
-			return wpinv_error_log( 'Invoice marked as "payment held".', false );
+			return wpinv_error_log('Invoice marked as "payment held".', false);
 		}
 
 		/* translators: %s: payment status. */
-		$invoice->update_status( 'wpi-failed', sprintf( __( 'Payment %s via IPN.', 'invoicing' ), sanitize_text_field( $posted['payment_status'] ) ) );
+		$invoice->update_status('wpi-failed', sprintf(__('Payment %s via IPN.', 'invoicing'), sanitize_text_field($posted['payment_status'])));
 
 	}
 
@@ -284,8 +284,8 @@ 
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 * @param array    $posted Posted data.
 	 */
-	protected function ipn_txn_cart( $invoice, $posted ) {
-		$this->ipn_txn_web_accept( $invoice, $posted );
+	protected function ipn_txn_cart($invoice, $posted) {
+		$this->ipn_txn_web_accept($invoice, $posted);
 	}
 
 	/**
@@ -294,43 +294,43 @@ 
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 * @param array    $posted Posted data.
 	 */
-	protected function ipn_txn_subscr_signup( $invoice, $posted ) {
+	protected function ipn_txn_subscr_signup($invoice, $posted) {
 
-		wpinv_error_log( 'Processing subscription signup', false );
+		wpinv_error_log('Processing subscription signup', false);
 
 		// Make sure the invoice has a subscription.
-		$subscription = getpaid_get_invoice_subscription( $invoice );
+		$subscription = getpaid_get_invoice_subscription($invoice);
 
-		if ( empty( $subscription ) ) {
-			return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false );
+		if (empty($subscription)) {
+			return wpinv_error_log('Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false);
 		}
 
-		wpinv_error_log( 'Found subscription #' . $subscription->get_id(), false );
+		wpinv_error_log('Found subscription #' . $subscription->get_id(), false);
 
 		// Validate the IPN.
-		$business_email = isset( $posted['business'] ) && is_email( $posted['business'] ) ? trim( $posted['business'] ) : trim( $posted['receiver_email'] );
-		$this->validate_ipn_receiver_email( $invoice, $business_email );
-		$this->validate_ipn_currency( $invoice, $posted['mc_currency'] );
+		$business_email = isset($posted['business']) && is_email($posted['business']) ? trim($posted['business']) : trim($posted['receiver_email']);
+		$this->validate_ipn_receiver_email($invoice, $business_email);
+		$this->validate_ipn_currency($invoice, $posted['mc_currency']);
 
 		// Activate the subscription.
-		$duration = strtotime( $subscription->get_expiration() ) - strtotime( $subscription->get_date_created() );
-		$subscription->set_date_created( current_time( 'mysql' ) );
-		$subscription->set_expiration( date( 'Y-m-d H:i:s', ( current_time( 'timestamp' ) + $duration ) ) );
-		$subscription->set_profile_id( sanitize_text_field( $posted['subscr_id'] ) );
+		$duration = strtotime($subscription->get_expiration()) - strtotime($subscription->get_date_created());
+		$subscription->set_date_created(current_time('mysql'));
+		$subscription->set_expiration(date('Y-m-d H:i:s', (current_time('timestamp') + $duration)));
+		$subscription->set_profile_id(sanitize_text_field($posted['subscr_id']));
 		$subscription->activate();
 
 		// Set the transaction id.
-		if ( ! empty( $posted['txn_id'] ) ) {
-			$invoice->add_note( sprintf( __( 'PayPal Transaction ID: %s', 'invoicing' ), $posted['txn_id'] ), false, false, true );
-			$invoice->set_transaction_id( $posted['txn_id'] );
+		if (!empty($posted['txn_id'])) {
+			$invoice->add_note(sprintf(__('PayPal Transaction ID: %s', 'invoicing'), $posted['txn_id']), false, false, true);
+			$invoice->set_transaction_id($posted['txn_id']);
 		}
 
 		// Update the payment status.
 		$invoice->mark_paid();
 
-		$invoice->add_note( sprintf( __( 'PayPal Subscription ID: %s', 'invoicing' ), $posted['subscr_id'] ), false, false, true );
+		$invoice->add_note(sprintf(__('PayPal Subscription ID: %s', 'invoicing'), $posted['subscr_id']), false, false, true);
 
-		wpinv_error_log( 'Subscription started.', false );
+		wpinv_error_log('Subscription started.', false);
 	}
 
 	/**
@@ -339,45 +339,45 @@ 
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 * @param array    $posted Posted data.
 	 */
-	protected function ipn_txn_subscr_payment( $invoice, $posted ) {
+	protected function ipn_txn_subscr_payment($invoice, $posted) {
 
 		// Make sure the invoice has a subscription.
-		$subscription = getpaid_subscriptions()->get_invoice_subscription( $invoice );
+		$subscription = getpaid_subscriptions()->get_invoice_subscription($invoice);
 
-		if ( empty( $subscription ) ) {
-			return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false );
+		if (empty($subscription)) {
+			return wpinv_error_log('Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false);
 		}
 
-		wpinv_error_log( 'Found subscription #' . $subscription->get_id(), false );
+		wpinv_error_log('Found subscription #' . $subscription->get_id(), false);
 
 		// PayPal sends a subscr_payment for the first payment too.
-		$date_completed = getpaid_format_date( $invoice->get_date_completed() );
-		$date_created   = getpaid_format_date( $invoice->get_date_created() );
-		$today_date     = getpaid_format_date( current_time( 'mysql' ) );
-		$payment_date   = getpaid_format_date( $posted['payment_date'] );
-		$subscribe_date = getpaid_format_date( $subscription->get_date_created() );
-		$dates          = array_filter( compact( 'date_completed', 'date_created', 'subscribe_date' ) );
+		$date_completed = getpaid_format_date($invoice->get_date_completed());
+		$date_created   = getpaid_format_date($invoice->get_date_created());
+		$today_date     = getpaid_format_date(current_time('mysql'));
+		$payment_date   = getpaid_format_date($posted['payment_date']);
+		$subscribe_date = getpaid_format_date($subscription->get_date_created());
+		$dates          = array_filter(compact('date_completed', 'date_created', 'subscribe_date'));
 
-		foreach ( $dates as $date ) {
+		foreach ($dates as $date) {
 
-			if ( $date !== $today_date && $date !== $payment_date ) {
+			if ($date !== $today_date && $date !== $payment_date) {
 				continue;
 			}
 
-			if ( ! empty( $posted['txn_id'] ) ) {
-				$invoice->set_transaction_id( sanitize_text_field( $posted['txn_id'] ) );
-				$invoice->add_note( wp_sprintf( __( 'PayPal Transaction ID: %s', 'invoicing' ), sanitize_text_field( $posted['txn_id'] ) ), false, false, true );
+			if (!empty($posted['txn_id'])) {
+				$invoice->set_transaction_id(sanitize_text_field($posted['txn_id']));
+				$invoice->add_note(wp_sprintf(__('PayPal Transaction ID: %s', 'invoicing'), sanitize_text_field($posted['txn_id'])), false, false, true);
 			}
 
 			return $invoice->mark_paid();
 
 		}
 
-		wpinv_error_log( 'Processing subscription renewal payment for the invoice ' . $invoice->get_id(), false );
+		wpinv_error_log('Processing subscription renewal payment for the invoice ' . $invoice->get_id(), false);
 
 		// Abort if the payment is already recorded.
-		if ( wpinv_get_id_by_transaction_id( $posted['txn_id'] ) ) {
-			return wpinv_error_log( 'Aborting, Transaction ' . $posted['txn_id'] . ' has already been processed', false );
+		if (wpinv_get_id_by_transaction_id($posted['txn_id'])) {
+			return wpinv_error_log('Aborting, Transaction ' . $posted['txn_id'] . ' has already been processed', false);
 		}
 
 		$args = array(
@@ -385,17 +385,17 @@ 
 			'gateway'        => $this->id,
 		);
 
-		$invoice = wpinv_get_invoice( $subscription->add_payment( $args ) );
+		$invoice = wpinv_get_invoice($subscription->add_payment($args));
 
-		if ( empty( $invoice ) ) {
+		if (empty($invoice)) {
 			return;
 		}
 
-		$invoice->add_note( wp_sprintf( __( 'PayPal Transaction ID: %s', 'invoicing' ), $posted['txn_id'] ), false, false, true );
-		$invoice->add_note( wp_sprintf( __( 'PayPal Subscription ID: %s', 'invoicing' ), $posted['subscr_id'] ), false, false, true );
+		$invoice->add_note(wp_sprintf(__('PayPal Transaction ID: %s', 'invoicing'), $posted['txn_id']), false, false, true);
+		$invoice->add_note(wp_sprintf(__('PayPal Subscription ID: %s', 'invoicing'), $posted['subscr_id']), false, false, true);
 
 		$subscription->renew();
-		wpinv_error_log( 'Subscription renewed.', false );
+		wpinv_error_log('Subscription renewed.', false);
 
 	}
 
@@ -404,18 +404,18 @@ 
 	 *
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 */
-	protected function ipn_txn_subscr_cancel( $invoice ) {
+	protected function ipn_txn_subscr_cancel($invoice) {
 
 		// Make sure the invoice has a subscription.
-		$subscription = getpaid_subscriptions()->get_invoice_subscription( $invoice );
+		$subscription = getpaid_subscriptions()->get_invoice_subscription($invoice);
 
-		if ( empty( $subscription ) ) {
-			return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false );
+		if (empty($subscription)) {
+			return wpinv_error_log('Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false);
 		}
 
-		wpinv_error_log( 'Processing subscription cancellation for the invoice ' . $invoice->get_id(), false );
+		wpinv_error_log('Processing subscription cancellation for the invoice ' . $invoice->get_id(), false);
 		$subscription->cancel();
-		wpinv_error_log( 'Subscription cancelled.', false );
+		wpinv_error_log('Subscription cancelled.', false);
 
 	}
 
@@ -425,18 +425,18 @@ 
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 * @param array    $posted Posted data.
 	 */
-	protected function ipn_txn_subscr_eot( $invoice ) {
+	protected function ipn_txn_subscr_eot($invoice) {
 
 		// Make sure the invoice has a subscription.
-		$subscription = getpaid_subscriptions()->get_invoice_subscription( $invoice );
+		$subscription = getpaid_subscriptions()->get_invoice_subscription($invoice);
 
-		if ( empty( $subscription ) ) {
-			return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false );
+		if (empty($subscription)) {
+			return wpinv_error_log('Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false);
 		}
 
-		wpinv_error_log( 'Processing subscription end of life for the invoice ' . $invoice->get_id(), false );
+		wpinv_error_log('Processing subscription end of life for the invoice ' . $invoice->get_id(), false);
 		$subscription->complete();
-		wpinv_error_log( 'Subscription completed.', false );
+		wpinv_error_log('Subscription completed.', false);
 
 	}
 
@@ -446,18 +446,18 @@ 
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 * @param array    $posted Posted data.
 	 */
-	protected function ipn_txn_subscr_failed( $invoice ) {
+	protected function ipn_txn_subscr_failed($invoice) {
 
 		// Make sure the invoice has a subscription.
-		$subscription = getpaid_subscriptions()->get_invoice_subscription( $invoice );
+		$subscription = getpaid_subscriptions()->get_invoice_subscription($invoice);
 
-		if ( empty( $subscription ) ) {
-			return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false );
+		if (empty($subscription)) {
+			return wpinv_error_log('Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false);
 		}
 
-		wpinv_error_log( 'Processing subscription payment failure for the invoice ' . $invoice->get_id(), false );
+		wpinv_error_log('Processing subscription payment failure for the invoice ' . $invoice->get_id(), false);
 		$subscription->failing();
-		wpinv_error_log( 'Subscription marked as failing.', false );
+		wpinv_error_log('Subscription marked as failing.', false);
 
 	}
 
@@ -467,18 +467,18 @@ 
 	 * @param WPInv_Invoice $invoice  Invoice object.
 	 * @param array    $posted Posted data.
 	 */
-	protected function ipn_txn_recurring_payment_suspended_due_to_max_failed_payment( $invoice ) {
+	protected function ipn_txn_recurring_payment_suspended_due_to_max_failed_payment($invoice) {
 
 		// Make sure the invoice has a subscription.
-		$subscription = getpaid_subscriptions()->get_invoice_subscription( $invoice );
+		$subscription = getpaid_subscriptions()->get_invoice_subscription($invoice);
 
-		if ( empty( $subscription ) ) {
-			return wpinv_error_log( 'Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false );
+		if (empty($subscription)) {
+			return wpinv_error_log('Aborting, Subscription for the invoice ' . $invoice->get_id() . ' not found', false);
 		}
 
-		wpinv_error_log( 'Processing subscription cancellation due to max failed payment for the invoice ' . $invoice->get_id(), false );
+		wpinv_error_log('Processing subscription cancellation due to max failed payment for the invoice ' . $invoice->get_id(), false);
 		$subscription->cancel();
-		wpinv_error_log( 'Subscription cancelled.', false );
+		wpinv_error_log('Subscription cancelled.', false);
 	}
 
 }