3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $t = array(1,2,3,4); $a = array(5,2,3,4); $t += $a; print_r($t);
Output for 4.3.0 - 7.2.0
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 )