app\models\UserAccount::hasUserId PHP Method

    public function hasUserId($userId)
    {
        if (!$userId) {
            return false;
        }
        for ($i = 1; $i <= 5; $i++) {
            $field = "user_id{$i}";
            if ($this->{$field} && $this->{$field} == $userId) {
                return true;
            }
        }
        return false;
    }