Paul Reinheimer has written up a review of one of the latest offerings from No Starch Press - "Object-Oriented PHP, Concepts, Techniques, and Code".
I'll get this out of the way up front; I approached this book with a completely inaccurate perception of what it was going to give me. I would consider myself an intermediate to advanced php developer, and I was hoping this book would teach me awesome ways to use PHP5's OOP power to make my applications better, faster, and more attractive to women.
That wasn't what this book does. This book introduces OOP, explains why it's useful, and goes through to develop several sample applications to demonstrate OOPs power, and more importantly how to use it.
He goes on to talk about the content/size of the book (relatively thin) including what it covers - beginning OOP, OOP in PHP4 and PHP5, a sample application, and a brief look at some of the more advanced features possible.
His overall opinion of the book is good, but there were two complaints that he had, more of a technical nature than just about the content (like the quality checking of the font size in paragraphs, changing in the middle). He'd still recommend it to those looking to get into OOP in PHP, though.