Phpml\Association\Apriori::subset PHP Метод

Returns true if subset is a (proper) subset of set by its items string representation.

private subset ( array $set, array $subset ) : boolean
$set	array
$subset	array
Результат	boolean

    private function subset(array $set, array $subset) : bool
    {
        return !array_diff($subset, array_intersect($subset, $set));
    }

Apriori