3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $matches=array(); preg_match("/[0-9]{3}-?[0-9]{3}/", "876878", $matches); var_dump($matches);
based on ssRsJ
Output for 4.3.0 - 7.1.0
array(1) { [0]=> string(6) "876878" }