3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [1, 2, 3, 8]; $arr2 = [1, 2, 4, 9, 10]; $arr3 = [1, 2, 5, 11, 12]; $arrs = [$arr1, $arr2, $arr3]; rsort($arrs); print_r($arrs);

preferences:
103.41 ms | 2128 KiB | 6 Q