3v4l.org

run code in 300+ PHP versions simultaneously

sponsor
bughunt
search
recent
about

@ 2014-01-15T16:56:28Z

<?php
var_dump(is_callable('f'));
$a = null;
call_user_func($a);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
is_callable: documentation ( source)

preferences:dark modelive preview

40.52 ms | 402 KiB | 5 Q