3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = function() { echo 512, "\n"; } call_user_func($x);
Output for 5.4.0 - 5.4.6
Parse error: syntax error, unexpected 'call_user_func' (T_STRING) in /in/JoWEP on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.16
Parse error: syntax error, unexpected T_STRING in /in/JoWEP on line 5
Process exited with code 255.