3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = 'a,b,c,d'; return preg_split('/(?<![^\\\\])\,/', $str);
based on ClH4B
Output for 4.4.5 - 4.4.9, 5.2.0 - 7.1.0
Output for 4.3.11 - 4.4.4, 5.0.0 - 5.1.6
Warning: preg_split(): Compilation failed: lookbehind assertion is not fixed length at offset 9 in /in/dgAnt on line 3
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: lookbehind assertion is not fixed length at offset 9 in /in/dgAnt on line 3