PHPDaemon\Clients\Redis\Connection::key PHP Method

    public function key()
    {
        if (!is_array($this->result)) {
            return $this->pos === 0 ? 0 : null;
        } elseif ($this->resultType === static::RESULT_TYPE_DEFAULT) {
            return $this->pos;
        } elseif ($this->resultType === static::RESULT_TYPE_MESSAGE) {
            // channel
            return $this->result[1];
        } elseif ($this->resultType === static::RESULT_TYPE_ARGSVALS) {
            return $this->args[$this->pos];
        } elseif ($this->resultType === static::RESULT_TYPE_ASSOC) {
            return $this->result[$this->pos * 2];
        }
    }