3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = 'e ,a\\,b\\\\,c\\\\\\,d\\\\'; var_dump(preg_split('/(?<!(?<!\\\\)\\\\),/', $str));
based on cVVFl
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(4) { [0]=> string(2) "e " [1]=> string(6) "a\,b\\" [2]=> string(4) "c\\\" [3]=> string(3) "d\\" }
Output for hhvm-3.10.0

Process exited with code 153.