3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a1 = array(1,2,3,4); $a1 += array(5=>5,6=>6,7=>7); var_dump($a1);
based on c6hfn
Output for 4.3.0 - 7.1.0
array(7) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [5]=> int(5) [6]=> int(6) [7]=> int(7) }