3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a=exec("ls",$b); var_dump($a); var_dump($b);
Output for 4.3.0, 5.4.44 - 7.2.0
string(0) "" array(0) { }
Output for 4.3.1 - 5.4.43
string(0) "" array(0) { } sh: 1: ls: not found