3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/(^|[^.\\d])5\\.6($|[^.\\d])/', '5.6.x')); var_dump(preg_match('/(^|[^.\\d])5\\.6($|[^.\\d])/', '5.7.x'));
Output for 4.3.0 - 7.2.0
int(0) int(0)