If you're looking for a thorough introduction to OOP in PHP (specifically), then this is the book for you. Not for the faint of heart - it rapidly moves from basic PHP OOP syntax into the mysterious world of the design pattern. The the lack of commenting in the code in these sections will likely leave you somewhat bemused, and it will probably take you a few reads to really understand the implications of the OOP/design pattern paradigm. Once you get over this hurdle, however, you will have a rich resource to hand. A core text for PHP coders. ( )