The time has come to launch version 1.0 of my Basecamp PHP Class. It’s by no means complete, but it does a majority of the main core features. So, instead of sitting on it for a while, I figured that it was best to launch it early and keep building upon it (hoping too that I will receive more feedback on it).
So, please check it out on the Basecamp API PHP Class page. I whipped together a quick documentation page as well listing how to use the core methods, as well as a bunch of the simple set and get public methods.