3v4l.org

run code in 300+ PHP versions simultaneously
<?php array_walk("test", function($v,$k) {echo $v});
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Fatal error: Only variables can be passed by reference in /in/FKQQY on line 3
Process exited with code 255.
preferences:
184.3 ms | 1395 KiB | 66 Q