流 年

如题，最近在用PHP写socket的客户端，用到了pack函数。因此记录下：

    /**
     * 测试链路是否能正常通信
     * @author      liuxiang <unphp@qq.com>
     * @date        2015-01-22
     * @return boolean
     */
    public function ping()
    {
        $pool = $this->_pool;
        $sendData = pack('A60', 'ping');
        $sendCount = $this->fiexLenInfo($sendData);
        $command = pack('a10', $sendCount) . $sendData;
        socket_write($pool, $command, strlen($command));
        $len_buff = @socket_read($pool, 10, PHP_NORMAL_READ);
        $len = (int) trim($len_buff);
        if ($len >= 5 && '200' === trim(@socket_read($pool, 5, PHP_NORMAL_READ)))
        {
            return true;
        }
        return false;
    }

    /**
     * 请求socket服务接口
     * @author      liuxiang <unphp@qq.com>
     * @date        2014-12-26
     * @param type $address   调用的接口名（内部路由地址）
     * @param type $data      发送的数据
     * @return type
     */
    public function send($address, $data = '')
    {
        $pool = $this->connect();
        $sendData = pack('A60', $address) . $data;
        $sendCount = $this->fiexLenInfo($sendData);
        $command = pack('a10', $sendCount) . $sendData;
        socket_write($pool, $command, strlen($command));
        $len_buff = @socket_read($pool, 10, PHP_NORMAL_READ);
        $len = (int) trim($len_buff);
        if ($len >= 5)
        {
            $code = @socket_read($pool, 5, PHP_NORMAL_READ);
            $rp = 5 === $len ? '' : @socket_read($pool, $len - 5, PHP_NORMAL_READ);
            $rs = new coreServerResult($code, $rp);
            return $rs;
        }
        else
        {
            App::error('服务返回数据异常！', 50003);
        }
        return null;
    }