Array intersect but good

README.md

PHP's array_intersect throws a fit if you only pass in one array cause it's a whiney baby. This one is good.

array_intersect_good.php

<?php

function array_intersect_good(array $arrays): array
{
    if (count($arrays) === 1) {
        return $arrays;
    }

    return array_intersect(...$arrays);
}