3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match('/^([a-z0-9_]+)(::([a-z0-9_]+))+/', 'lol::whut::gee::loo', $matches); var_dump($matches);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(4) { [0]=> string(19) "lol::whut::gee::loo" [1]=> string(3) "lol" [2]=> string(5) "::loo" [3]=> string(3) "loo" }