WPDKUser::hasCap PHP Method

    public static function hasCap($cap, $id_user = null)
    {
        if (is_null($id_user)) {
            $id_user = get_current_user_id();
        }
        $user = new WP_User($id_user);
        if ($user) {
            return $user->has_cap($cap);
        }
        return false;
    }