/**
* 获取数据类库对象
*
* @return Mysql
*/
private static function getLink()
{
if (self::$link instanceof Mysql == false) {
self::$link = new Mysql('127.0.0.1', 3306, 'zhaoyan', 123123, 'test', 'utf8mb4');
}
return self::$link;
}
