In this new tutorial from NetTuts.com, they want to help you make the move from procedural PHP to the world of Object-Oriented PHP. They opt for the mini-project approach and show you how to make a simple Google API client.
This tutorial was inspired by a speech given by Robert C. Martin that I watched a year or so ago. The main subject of his talk is about the possibility of picking The Last Programming Language. He addresses topics such as why should such a language exist? And what it should look like? However, if you read between the lines, there was another interesting idea that caught my attention: the limitations that each programming paradigm imposes upon on us programmers. So before we get into how we could go about converting a procedural based PHP app into an object oriented one, I want to cover a little bit of theory beforehand.
They start their example with a procedural approach, showing how to make the client and make a request for calendar information. They then work through the refactoring of the example, breaking it up into logical chunks (objects) and separating out some of the logic (like view versus logic). They talk about everything from basic OOP terms out to more complex ideas like SOLID.
Link: http://net.tutsplus.com/tutorials/php/from-procedural-to-object-oriented-php
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