3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = array(0,1,2,3,4,5, 6); $a = 0; foreach($arr as $v) { $a ^= $v; } echo $a;
based on RgP9Z
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.1.0 - 7.3.0rc3
7