3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = '1|2\|2|3\\|4\\\|4'; $array = preg_split('~\\\\.(*SKIP)(*FAIL)|\|~s', $string); print_r($array);
Output for 4.4.9, 5.2.5 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => 1 [1] => 2\|2 [2] => 3\|4\\ [3] => 4 )
Output for 4.3.11 - 4.4.8, 5.0.0 - 5.2.4
Warning: preg_split(): Compilation failed: nothing to repeat at offset 4 in /in/iDpMV on line 4
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: nothing to repeat at offset 4 in /in/iDpMV on line 4