3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match_all('/\(([\d]+)\)/',$string,$matches));
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: string in /in/Bsno7 on line 2 int(0)
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: string in /in/Bsno7 on line 2 int(0)