php script question (is this possible?)

I've done php scripting using mysql, so I know php. But I'm not very experienced in it. I just wrote a program to add, remove, and modify users in a mysql database.

Is it possible to write a php script that will search through a local directory, and somehow get a hold of the folder names into a variable.

Then I'd be able to make a simple script that could display a link for each folder in a directory, and you click on the link and then it takes you to a dynamically created page that displays each file in the folder as a link for you to download.

What say you? Possible?

http://php.net/manual/en/function.readdir.php

http://php.net/manual/en/function.scandir.php(Probably not yet available).