3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [1,2,3,4,5,6]; $arr2 = [1,2,4,5]; $arr3 = [1,2,3,5]; $arr4 = array(); var_dump(array_values(array_diff($arr1,$arr2)));

preferences:
50.17 ms | 402 KiB | 5 Q