3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match('~(a)*~', str_repeat('a', 30000), $match); var_dump($match);
Output for 7.0.0 - 7.3.0rc4
array(0) { }
Output for 4.3.0 - 5.6.28

Process exited with code 139.