3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match("/(\w+)?/", "",$matches); print_r($matches); preg_match("/(\w*)/", "",$matches); print_r($matches);
Output for 4.3.0 - 7.2.0
Array ( [0] => ) Array ( [0] => [1] => )