3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = [ [1, 2, 3], [4, 5, 6], ]; var_dump(array_merge(...$arr));
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.2.7
array(6) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) }