Object Orientated Programming in Newsletter, Blog, and Other Topics Posted June 5, 2012 I have the same edition. Some of the end chapters are different and do seem out of place with the rest of the book. I read the book when I had no understanding of OOP and was struggling to understand it all. There was no book available from Larry Ullman on the subject at the time. You were still planning the PHP5 Advanced book at the time. And hopefully the next edition will be your best yet! really looking forward to that one actually.