Advanced & OO PHP Book Recommendations
I'm looking for a book recommendation to advance my knowledge of PHP.
Where I am: I'm pretty proficient with PHP, working with databases, and so on. I can create fully functional websites, custom CMSs and so on. However, I would like my code to be more modular, easier to maintain, and generally "better."
I'm not very good with object-oriented PHP at all, and I would like a book that can get me on that path, as I think it's the way to go, (correct me if I'm wrong), and generally get me thinking about advanced and/or different PHP techniques.
I've read that Larry Ullman is a good author. Is this true for what I am looking for, or are his books more like "LAMP for Dummies" -type books?
I've always just used the PHP manual to figure things out, but I want to advance my coding. I'm not looking for a reference manual of functions and stuff - I'm looking for techniques and ideas.
Thanks in advance!