Guys i was wondering if any of you can suggest a book or a tutorial that i can use in object oriented PHP
I assume you already have a relatively solid understanding of PHP's basics. e.g. Functions, Variables, Includes etc.
Great place to start is the manual.
Once you feel you have a good understanding of how OOP works in general, I find the SPL (Standard PHP Library) to be extremely useful
From there I'd recommend looking at some common design patterns and getting a feel for strengths and weaknesses
As far as books, I can recommend these three specifically:
The problem I found with books is they're usually outdated in some respect by the time they are published.