3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match("/^(img|js|css)\/(?P<path>[/a-zA-Z0-9\-._~!$&'()*+,;=:@]+)$/", 'img/asasas/43l2kj.llasd.', $m); var_dump($m);
Output for 5.2.0 - 7.1.7
Warning: preg_match(): Unknown modifier 'a' in /in/oOVgq on line 5 NULL
Output for 4.3.11 - 5.1.6
Warning: preg_match(): Unknown modifier 'a' in /in/oOVgq on line 5 array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier 'a' in /in/oOVgq on line 5 array(0) { }