3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array('a'=>1, 'b'=>2); $b = true; while(list($key, $value) = each($a) && $b) { var_dump($key, $value); $b = false; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
NULL NULL