$autoload['libraries'] = array('redis');

<"_blank" href="https://github.com/joelcox/codeigniter-redis" rel="external nofollow" >redis库文件包

文件内容：


<"\r\n";
  /**
   * Constructor
   */
  public function __construct($params = array())
  {
    log_message('debug', 'Redis Class Initialized');
    $this->_ci = get_instance();
    $this->_ci->load->config('redis');
    // Check for the different styles of configs
    if (isset($params['connection_group']))
    {
      // Specific connection group
      $config = $this->_ci->config->item('redis_' . $params['connection_group']);
    }
    elseif (is_array($this->_ci->config->item('redis_default')))
    {
      // Default connection group
      $config = $this->_ci->config->item('redis_default');
    }
    else
    {
      // Original config style
      $config = array(
        'host' => $this->_ci->config->item('redis_host'),
        'port' => $this->_ci->config->item('redis_port'),
        'password' => $this->_ci->config->item('redis_password'),
      );
    }
    // Connect to Redis
    $this->_connection = @fsockopen($config['host'], $config['port'], $errno, $errstr, 3);
    // Display an error message if connection failed
    if ( ! $this->_connection)
    {
      show_error('Could not connect to Redis at ' . $config['host'] . ':' . $config['port']);
    }
    // Authenticate when needed
    $this->_auth($config['password']);
  }
  /**
   * Call
   *
   * Catches all undefined methods
   * @param  string method that was called
   * @param  mixed  arguments that were passed
   * @return mixed
   */
  public function __call($method, $arguments)
  {
    $request = $this->_encode_request($method, $arguments);
    return $this->_write_request($request);
  }
  /**
   * Command
   *
   * Generic command function, just like redis-cli
   * @param  string full command as a string
   * @return mixed
   */
  public function command($string)
  {
    $slices = explode(' ', $string);
    $request = $this->_encode_request($slices[0], array_slice($slices, 1));
    return $this->_write_request($request);
  }
  /**
   * Auth
   *
   * Runs the AUTH command when password is set
   * @param  string password for the Redis server
   * @return void
   */
  private function _auth($password = NULL)
  {
    // Authenticate when password is set
    if ( ! empty($password))
    {
      // See if we authenticated successfully
      if ($this->command('AUTH ' . $password) !== 'OK')
      {
        show_error('Could not connect to Redis, invalid password');
      }
    }
  }
  /**
   * Clear Socket
   *
   * Empty the socket buffer of theconnection so data does not bleed over
   * to the next message.
   * @return NULL
   */
  public function _clear_socket()
  {
    // Read one character at a time
    fflush($this->_connection);
    return NULL;
  }
  /**
   * Write request
   *
   * Write the formatted request to the socket
   * @param  string request to be written
   * @return mixed
   */
  private function _write_request($request)
  {
    if ($this->debug === TRUE)
    {
      log_message('debug', 'Redis unified request: ' . $request);
    }
    // How long is the data we are sending"htmlcode">

<"_blank" href="https://www.jb51.net/article/33887.htm">https://www.jb51.net/article/33887.htm

需要注意的是：
（1）你的本地需要安装 redis服务(windows安装)

（2）并开启redis 服务

（3）不管是windows 还是linux 都需要装 php对应版本的 redis扩展
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                                    CI框架,CodeIgniter,redis