I'm looking for some well-written, practical object oriented php tutorials, either books or online. I've found a lot of tuts that don't go very in-depth and simply end once you learn the basics. I'd like to find some that have very practical examples, login scripts, blogs, etc. I'm wary of finding random examples online that are probably badly coded (some of the nettuts oo php tuts come to mind) and would rather learn from a respectable source. Thanks for any suggestions!