<?php
$config = unserialize(base64_decode(Typecho_Cookie::get('__typecho_config')));
Typecho_Cookie::delete('__typecho_config');
$db = new Typecho_Db($config['adapter'], $config['prefix']);  //实例化了一个对象。 跟进
$db->addServer($config, Typecho_Db::READ  Typecho_Db::WRITE);
Typecho_Db::set($db);
?>