3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/(ab){,4}/', 'aabbababababababaabababaababaababab')); var_dump(preg_match('/(ab){0,4}/', 'aabbababababababaabababaababaababab'));
Output for 4.3.0 - 7.2.0
int(0) int(1)