3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = "5391898ad96363ea4f8b45ed";$x = preg_match("~^[0-1a-f]+$~", $str, $z); var_dump($x,$z);
Output for 4.3.0 - 7.1.0
int(0) array(0) { }