Getting rid of files from domain name using PHP

Question

I have the following URLs:

http://website.com/folder1/file.php
http://website.com/folder2/file.html

I want to know if there is any way in PHP

Answer 1

ok I found the answer :

<? echo dirname("http://website.com/folder1/file.php"); ?>

so the url will look like this :

http://website.com/folder1/