Ok, each to their own

One more thing to add to my original post though for the benifit of anyone else who is thinking of writing their own database class, if you are worried about speed, use PDO, it's much faster than a function wrapper class and provides support for every database system that PHP supports nativly. Also, the major downside of using a function wrapper system is that if you want to extend it to support other database servers in the future, you're stuck with writing all your queries in SQL92 which means you loose a lot of functionality such LIMIT.

Alan