PHP8.x Compatibility - Deprecated Functionality: strpos()

[samuelebau]

What I Expected

I expected to refund an order paid with Amazon via API requests

What happened instead

Exception: Deprecated Functionality: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /var/www/current/vendor/amzn/amazon-pay-magento-2-module/Plugin/OrderCurrencyComment.php on line 66 When I try to refund an order with different base_currency_code and order_currency_code

Steps to reproduce the issue

• Place an Order (the order must have different base_currency_code and order_currency_code
• Refund that order (via API or backoffice)

Your setup

• Magento version: 2.4.4-p4
• Amazon Pay Extension Version: 5.14.1 (bug also present on 5.16.1)
• Magento Edition: Enterprise
• PHP Version: 8.1.23

[samuelebau]

I also resolved this issue with the patch below, please include this fix in the upcoming version.

diff --git a/vendor/amzn/amazon-pay-magento-2-module/Plugin/OrderCurrencyComment.php b/vendor/amzn/amazon-pay-magento-2-module/Plugin/OrderCurrencyComment.php
--- a/vendor/amzn/amazon-pay-magento-2-module/Plugin/OrderCurrencyComment.php
+++ b/vendor/amzn/amazon-pay-magento-2-module/Plugin/OrderCurrencyComment.php   (date 1698229883874)
@@ -61,9 +61,11 @@
         if ($subject->getMethod() == Config::CODE) {
             $order = $subject->getOrder();
             if ($order->getBaseCurrencyCode() != $order->getOrderCurrencyCode() &&
-                (($subject->getMessage() instanceof Phrase
-                && $subject->getMessage()->getText() == 'Canceled order online')
-                || strpos($subject->getTransactionId(), '-void') !== false)
+                (
+                    ($subject->getMessage() instanceof Phrase
+                    && $subject->getMessage()->getText() == 'Canceled order online')
+                    || strpos($subject->getTransactionId() ?? '', '-void') !== false
+                )
             ) {
                 return $result .' ['. $order->formatPriceTxt($subject->getAmountOrdered()) .']';
             }

[sgabhart22]

Hello @samuelebau ,

I'm afraid I was unable to reproduce this issue on a clean 2.4.4-p4 EE instance running on PHP 8.1. The base currency was EUR and the order currency was SEK:

The underlying problem seems to be that, for some reason, there is no transaction ID associated with the Payment on your order(s) that need to be refunded. There shouldn't ever be a point where an Amazon Pay order has no transaction ID set on the Payment if it's been authorized, and especially if it's been captured; are there any customizations or third party extensions that might be affecting the way the Amazon Pay module records these transaction IDs?

Thanks, Spencer