Predis\PubSub\AbstractConsumer::valid PHP Метод

    public function valid()
    {
        $isValid = $this->isFlagSet(self::STATUS_VALID);
        $subscriptionFlags = self::STATUS_SUBSCRIBED | self::STATUS_PSUBSCRIBED;
        $hasSubscriptions = ($this->statusFlags & $subscriptionFlags) > 0;
        return $isValid && $hasSubscriptions;
    }