3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function i($n){return intval($n);} $b = array_walk(array("1","2"),"i"); var_dump($b);
Output for 4.3.2 - 5.4.26
Fatal error: Only variables can be passed by reference in /in/U4Ynh on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/U4Ynh on line 3