3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ArrayA = ["Genre1" => 1, "Genre2" => 2, "Genre3" => 3, "Genre4" => 4]; $ArrayB = [1, 2, 3]; print_r(array_diff($ArrayA, $ArrayB));

preferences:
61.33 ms | 402 KiB | 5 Q