3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_match('/(.)*/', str_repeat('x', 6000));
Output for 4.3.0 - 5.3.9, 5.3.23 - 7.1.0
Output for 5.3.10 - 5.3.22

Process exited with code 139.