通过读取http_referer变量获得你的网址,然后读取你的网页标题和其他信息,来达到友情连接交换的效果.搜索引擎会根据本站的链接加快收录或者更新您的网站. -The search engine will speed up the collection of links according to this site by reading http_referer variables get your web site, then read your page titles and other