3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = array('a'=>1, 'b'=>2); $z = array('c'=>1, 'a'=>2); var_dump($x+$z);
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(1) }
Output for hhvm-3.10.0

Process exited with code 153.