[php-src] Issue #20396: bug in all 8.x versions

Issue: https://github.com/php/php-src/issues/20396 Author: Slavo-S ### Description The following code: ```<?php $arrA = array('a' => array('x' => 100), 'b' => array('x' => 200), 'c' => array('x' => 300)); // Array of Arrays $arrO = json_decode('[{"id": 1, "val": 10}, {"id": 2, "val": 20}, {"id": 3, "val": 30}]'); // Array of Objects foreach ($arrA as &$val) $val['x'] += 2; // this doesnt work (variable $val) //foreach ($arrA as &$val2) $val2['x'] += 2; // this works (renamed reference variable) foreach ($arrO as $val) { foreach ($arrA as $item) error_log($item['x']); // last item in $arrA changed from Array to Object in array $arrO !!! break; // other itteration resulted in same error (last item changed) } ``` Resulted in this output: [05-Nov-2025 12:55:36 Europe/Bratislava] 102 [05-Nov-2025 12:55:36 Europe/Bratislava] 202 [05-Nov-2025 12:55:36 Europe/Bratislava] PHP Fatal error: Uncaught Error: Cannot use object of type stdClass as array in But I expected this output instead: [05-Nov-2025 12:54:32 Europe/Bratislava] 102 [05-Nov-2025 12:54:32 Europe/Bratislava] 202 [05-Nov-2025 12:54:32 Europe/Bratislava] 302 ### PHP Version ```plain PHP 8.4.7 (cli) (built: May 6 2025 14:14:22) (NTS Visual C++ 2022 x64) Copyright (c) The PHP Group Zend Engine v4.4.7, Copyright (c) Zend Technologies with Zend OPcache v8.4.7, Copyright (c), by Zend Technologies with Xdebug v3.4.1, Copyright (c) 2002-2025, by Derick Rethans ``` ### Operating System Windows10