3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1,null,3); $b = array(4,5,6); $c = $a + $b; var_dump($c);
based on op00c
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
array(3) { [0]=> int(1) [1]=> NULL [2]=> int(3) }
Output for hhvm-3.10.0

Process exited with code 153.