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限制用户访问

2012-02-13
使用这段代码你可以创建一个页面,限制用户的访问,在添加这段代码的时候你还需要创建一个错误页面error.php,包含所以你想显示的消息,如果权限不够的用户想要访问,错误页面可能会说“对不起,您的权限无法访问本页面&rdqu...

互联网用户时区分布图

2011-05-21
全球有大约20亿互联网用户。正如人口的不均匀分布,互联网用户的分布也是不均匀的。按照国家划分,中美两国分别占据第一、第二互联网人口大国的位置。那么从不同时区来看,全球互联网用户又是如何分布的呢? 对此互联网市场调查公司Pin...

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