3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string1 = "sqrtpdrt"; // matched $string2 = "qwntfschrprtkjs"; // not matched (contains chr group) $regex = '/^(?i:=.*[bcdfghjklmnpqrstvwxz]{4})(?!.*chr)/i'; var_dump(preg_match($regex, $string1)); var_dump(preg_match($regex, $string2));
Output for 4.3.0 - 7.2.0
int(0) int(0)