3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $subject = "abcdef"; $pattern = '/aasa/'; preg_match($pattern,$subject, $m); print_r($matches);
Output for 5.0.4 - 7.1.10
Notice: Undefined variable: matches in /in/vAN7Z on line 6
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: matches in /in/vAN7Z on line 6