3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $matches=array(); preg_match('/([0-9]{3})-?[0-9]{4}/','(234)-5432',$matches); var_dump($matches);
based on cTftI
Output for 4.3.0 - 7.2.0
array(0) { }