3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $words = "systematic,gear,synthesis,mysterious"; $words=explode(",",$words); $res = preg_grep('~(?=[^s]*s)(?=[^m]*m)(?=[^e]*e)~', $words); print_r($res);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => systematic [3] => mysterious )