I've been toying around with this for a little while --- and it's been a lot of fun. It's a pretty straightforward project: make a 3D cube with CSS and make it spin with javascript via touch and mouse interactions. Currently, the interactive part only works in webkit browsers as I'm using the WebkitCSSMatrix object to apply the transformations. In the future, I hope to come back to this and revise it to work non-webkit browsers. But that's a project for another day.

So... if you're looking around the new site (and you have a modern browser,) you'll see that I really dig CSS transforms and transitions at the moment—so I'll probably be posting a few more of these types of exercises in the near future.

One of the things I've found incredibly helpful in PHP development is the variable variable, or $$. I'm not sure where or when I discovered this, but it's an incredibly helpful shortcut and can actually help you avoid some dumb mistakes from typos, etc.