Here is a list of handy tutorials that offer Tutorials in PHP OOP. Those that are getting good at PHP might want to give these a look over and add to their favorites collection. Without further ado.
Here is the List:
Object Oriented Programming The Basics
Step By Step OOP PHP Programming
OOP Cheat Sheet
Learn PHP OOP ASAP!
Object Oriented Programming for Begginners
Getting Started with OOP and PHP5
PDF of OOP PHP in a Presentation
The PHP Anthology – SitePoint
An introduction to PHP OOP