Merge branch 'PHP-8.5'

* PHP-8.5:
  memory_limit is not always limited by max_memory_limit

Author: iluuu1994

tests/basic/gh17951_runtime_change_6.phpt

@@ -0,0 +1,19 @@
+--TEST--
+GH-17951 Runtime Change 6
+--INI--
+memory_limit=128M
+max_memory_limit=512M
+--FILE--
+<?php
+for($i = 0; $i < 3; $i++) {
+  ini_set('memory_limit', '1024M');
+  echo ini_get('memory_limit');
+}
+?>
+--EXPECTF--
+Warning: Failed to set memory_limit to 1073741824 bytes. Setting to max_memory_limit instead (currently: 536870912 bytes) in %s on line %d
+512M
+Warning: Failed to set memory_limit to 1073741824 bytes. Setting to max_memory_limit instead (currently: 536870912 bytes) in %s on line %d
+512M
+Warning: Failed to set memory_limit to 1073741824 bytes. Setting to max_memory_limit instead (currently: 536870912 bytes) in %s on line %d
+512M