Php Mysql Query descending?

[brandon d]

I have a skateshop and I made a test query where people can choose name asc(a-z), name desc(z-a), price (low-high), and pric (high-low) and I was wondering if there was a way to let them pick one and not have to be redirected to a new page like i already have it set up, http://www.dalhartfinest.com/swl/Main.php . If you can give me the code or send me towards a tutorial i would appreciate it.. Thanks guys