3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php print (preg_match('~^(?:a)*$~', str_repeat('a', 10000) . 'b'));
based on 5Hg1v
Output for 7.0.0 - 7.2.0
Output for 5.3.18 - 5.6.28
0