so I have been having trouble getting files like so:

require_once '../vendor/my-appname/config/file.php';

and I use XAMPP and I put in the following:

echo get_include_path();

and I received this output: C:xamppphpPEAR

Is there a way to set this to my htdocs folder? Or is that even what I should do?

I found this:
https://www.php.net/manual/en/function.set-include-path.php
but I would like it to be set globally throughout my programs for anything in the htdocs directory.

I was expecting an output of:
C:xampphtdocsmy-appname