looking for a safe way to ..

[Ivo]

I am looking for a safe way to controll wich content I want to display on index.php trough the url

so i have one index.php file and I want to controll wich .txt file i want to include by changing the url.

I heard that there are some security issue's with this and I want to know a way on how to do it safely.

 

[kabatak]

http://www.freewebspace.net/forums/showthread.php?s=&threadid=36429