Functions stop working when file included with root path (leading slash)

Question

My PHP files in my root directory INCLUDE header.php. Header.php INCLUDEs functions.php. I\'m adding new pages in a subdirectory, so I added leading slashes to all my links

Answer 1

Include and Require literally pull the code into the executing file, so one thing to watch out for is that the files in a subdirectory are running from the working directory.

Example:

         |-templates-|-header.php
Docroot--|
         |-inc-|-functions.php
         |
         |-index.php

Index.php

template/header.php

because the header.php code is being executed from the docroot due to the include.