3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = "make"; echo preg_match("ak", $str);
based on 8aG6t
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.3.0beta1
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/e6fIq on line 4
Output for hhvm-3.12.14 - 3.17.3
Warning: Delimiter must not be alphanumeric or backslash in /in/e6fIq on line 4