It's not a bad site: Though looking to learn PHP there's not really much, there's one or two PHP specific projects, building an eCommerce site IIRC, probably a better resource if you're learning Ruby, at least that way you can build a simple social networking site in Ruby.
However there is a good selection for: design theory, web design (responsive, adaptive, interactive etc), CSS/HTML/JS/Photoshop.
There's also a few catered towards Android and IOS apps. :)