3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array('1' => 1, '2' => '2', '3'=>3); foreach($array as $val => $key) { echo $key; }
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
123
Output for hhvm-3.10.0

Process exited with code 153.