MatthiasMullie\Scrapbook\Adapters\Redis::increment PHP Метод

    public function increment($key, $offset = 1, $initial = 0, $expire = 0)
    {
        if ($offset <= 0 || $initial < 0) {
            return false;
        }
        // INCRBY initializes (at 0) & immediately increments, whereas we
        // only do initialization if the value does not yet exist
        if ($initial + $offset === 0 && $expire === 0) {
            return $this->client->incrBy($key, $offset);
        }
        return $this->doIncrement($key, $offset, $initial, $expire);
    }