Web服务器是否规范化浏览器客户端传递的路径？

Question

I am reviewing some php code and a question came to my head - does web server normalize the path sent by the client.

For example, if a client enters http://example.code/tut/../123.html URL. What the server will get from _SERVER['HTTP_URI'] varable? 123.html or tut/../123.html?

Answer 1

There is no $_SERVER['HTTP_URI'] variable. There's $_SERVER['REQUEST_URI'], and it will provide /tut/../123.html.