3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; function foo(array $array) { $array[] = 'clément'; } foo($a); var_dump($a);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(0) { }

preferences:
158.72 ms | 403 KiB | 174 Q