关闭所有链接
null Driver_Cache_Driver_Redis::close_all_connect( )
public static function close_all_connect()
{
    foreach (Cache_Driver_Redis::$redis as $config_name=>$obj)
    {
        try
        {
            $obj->close();
        }
        catch (Exception $e)
        {
            Core::debug()->error('close cache redis connect error:'.$e);
        }
        Cache_Driver_Redis::$redis[$config_name] = null;
    }
    # 重置全部数据
    Cache_Driver_Redis::$redis = array();
    Cache_Driver_Redis::$redis_num = array();
    if (IS_DEBUG)Core::debug()->info('close all cache redis server.');
}