3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = 'a,b\\\,c,d'; var_dump(preg_match_all('/[^\\\\]\\\\,|([^,]+?)/', $str, $matches));
based on fGmVN
Output for 4.3.0 - 7.2.0
int(6)