3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(E_ALL); $array = array(); $array['foo'][] = 'bar'; var_dump($array);
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(1) { ["foo"]=> array(1) { [0]=> string(3) "bar" } }
Output for hhvm-3.10.0

Process exited with code 153.