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How to get the root directory of the website in php?

I originally learned java by using <%=request.getContextPath()%> to get the site root directory, but now I’m confused when learning php

java is

< ;a href="<%=request.getContextPath()%>/html/main/main.jsp">Homepage</a></span>

How to write php

Labmem No.0002528 days ago1156

reply all(2)I'll reply

寻觅 beyond2017-10-21 12:07:02

You can use $_SERVER['DOCUMENT_ROOT'] to get

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No, what you get is the project address of the server, not the root directory of the URL.

— Labmem No.000 · 2017-10-21 17:04:33

Reply to Labmem No.000: Then you can just use $_SERVER['HTTP_HOST'] to obtain the domain name. The domain name is the root directory of the site.

— 寻觅 beyond · 2017-10-22 10:37:26

ringa_lee2017-10-21 09:36:43

PHP has a magic constant __FILE__ that can be obtained

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