Predis\Connection\Parameters::__toString PHP Method

    public function __toString()
    {
        if ($this->scheme === 'unix') {
            return "{$this->scheme}:{$this->path}";
        }
        if (filter_var($this->host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
            return "{$this->scheme}://[{$this->host}]:{$this->port}";
        }
        return "{$this->scheme}://{$this->host}:{$this->port}";
    }