3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match_all('/\(([\d]+)\)/',$string,$matches); var_dump($matches);
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: string in /in/lcqrM on line 2 array(2) { [0]=> array(0) { } [1]=> array(0) { } }
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: string in /in/lcqrM on line 2 array(2) { [0]=> array(0) { } [1]=> array(0) { } }