3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$");
Output for 4.3.0 - 7.2.0
string(69) "^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$"