3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'foo'; $array = [&$a]; var_dump($array); $newArray = array_map(function(&$item){ return $item; }, &$array); var_dump($newArray);
Output for 5.4.0 - 5.4.25
Fatal error: Call-time pass-by-reference has been removed in /in/DR3fu on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[' in /in/DR3fu on line 4
Process exited with code 255.
preferences:
187.09 ms | 1395 KiB | 62 Q