Credis_Client::convertHost PHP Method

    protected function convertHost()
    {
        if (preg_match('#^(tcp|unix)://(.*)$#', $this->host, $matches)) {
            if ($matches[1] == 'tcp') {
                if (!preg_match('#^([^:]+)(:([0-9]+))?(/(.+))?$#', $matches[2], $matches)) {
                    throw new CredisException('Invalid host format; expected tcp://host[:port][/persistence_identifier]');
                }
                $this->host = $matches[1];
                $this->port = (int) (isset($matches[3]) ? $matches[3] : 6379);
                $this->persistent = isset($matches[5]) ? $matches[5] : '';
            } else {
                $this->host = $matches[2];
                $this->port = NULL;
                if (substr($this->host, 0, 1) != '/') {
                    throw new CredisException('Invalid unix socket format; expected unix:///path/to/redis.sock');
                }
            }
        }
        if ($this->port !== NULL && substr($this->host, 0, 1) == '/') {
            $this->port = NULL;
        }
    }