3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $url = 'http://www.google.com'; print_R(preg_match('\:\/\/', $url));
based on PlcEo
Output for 4.3.11 - 7.1.10
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/WWZHB on line 3
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/WWZHB on line 3