3v4l.org

run code in 500+ PHP versions simultaneously
<?php function f($ar = array(), &$gl = array()) { $gl[0] = array($ar[1]); } $globals = array(); $array_example = array('foo', 'bar'); f($array_example, $globals); print_r($globals);
Output for 7.1.0 - 7.1.25, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
Array ( [0] => Array ( [0] => bar ) )
preferences:
314.43 ms | 1459 KiB | 4 Q