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php redis 操作

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2016-05-26 08:18:342433browse

php redis 操作

redis = new Redis();
	}
	
	/**
	 * 链接memcahce服务
	 *
	 * @access	private
	 * @param	string	$key  关键字
	 * @param	string	$value	缓存内容
	 * @return	array
	 */
	private function connect( $sid )
	{
		$file = $this->CacheFile();
		require $file;
		if(! isset($cache) )
		{
			throw new QException('缓存配置文件不存在'.$file);
		}
		$server = $cache[$this->cacheId];
		$sid    = isset($sid) == 0 ? $this->sId : $sid;//memcache服务选择
		if ( ! $server[$sid])
		{
			throw new QException('当前操作的缓存服务器配置文件不存在');
		}
		$host = $server[$sid]['host'];
		$port = $server[$sid]['port'];
		try {
			$this->redis->connect( $host , $port );
		} catch (Exception $e) {
			exit('memecache连接失败,错误信息:'. $e->getMessage());
		}
	}
	
	/**
	 * 写入缓存
	 *
	 * @access	private
	 * @param	string	$key  关键字
	 * @param	string	$value	缓存内容
	 * @return	array
	 */
	public function set( $key , $value , $sid , $expire = 0)
	{
		$data = $this->get($key , $sid); //如果已经存在key值
		if( $data ) 
		{
			return $this->redis->getset( $key , $value);
		} else {
			return $this->redis->set( $key , $value);
		}
	}
	
	/**
	 * 读取缓存
	 *
	 * @access	private
	 * @param	string	$key  关键字
	 * @param   int     $sid  选择第几台memcache服务器
	 * @return	array
	 */
	public function get( $key , $sid)
	{
		$this->connect( $sid );
		return $this->redis->get($key);
	}
	
	/**
	 * 	清洗(删除)已经存储的所有的元素
	 *
	 * @access	private
	 * @return	array
	 */
	public function flush()
	{
		$this->connect();
		return $this->redis->flushall();
	}
	/**
	 * 删除缓存
	 *
	 * @access	private
	 * @param	string	$key  关键字
	 * @param   int     $sid  选择第几台memcache服务器
	 * @return	array
	 */
	public function remove( $key , $sid)
	{
		$this->connect();
		return $this->redis->del($key);
	}
	
	/**
	 * 析构函数
	 * 最后关闭memcache
	 */
	public function __destruct()
	{
		if($this->redis)
		{
			$this->redis->close();
		}
	}
}

                   

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