3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = array(8,4,1,9,5,7,3,2,6,0); function merge_sort($list){ if(count($list) <= 1) { return $list; } $middle = count($list)/2; $left = merge_sort(array_slice($list, 0, $middle)); $right = merge_sort(array_slice($list, $middle, count($list))); print_r(array_merge($left, $right)); } merge_sort($data);

preferences:
38.61 ms | 402 KiB | 5 Q