PHP Objects

Learn about object-oriented programming in PHP. These tutorials show you how to use PHP classes and objects to build robust object-oriented code.

Object-Oriented PHP: Autoloading, Serializing, and Querying Objects

29 June 2011 / 9 Comments

Welcome to my fourth object-oriented PHP tutorial! If you missed the first three then you may want to take a look at those first, to give yourself a thorough grounding in PHP classes and objects:

If you’ve read all the articles up to this point then you’re already familiar with the most important concepts of object-oriented programming in PHP: classes, objects, properties, methods, and inheritance. In this final (for now, at least!) tutorial in the series, I’m going to tie up some loose ends and look at some other useful OOP-related features of PHP:

How to automatically load classes on demand
Converting objects to and from strings for easy storage and transmission, and
Useful ways to find out more about a given class or object.

Ready? Let’s go!

Object-Oriented PHP: Working with Inheritance

26 May 2011 / 2 Comments

Welcome to my third object-oriented PHP tutorial! If you haven’t already checked out the first two then you may want to take a look at those first, since this tutorial builds on the previous two:

In this article we’re going to explore the idea of inheritance in object-oriented programming, and how inheritance works in PHP. With inheritance, your objects and classes can become much more powerful and flexible, and you can save a lot of time and effort with your coding.

We’ll look at the following topics in this article:

The concept of inheritance, and why it’s so useful
How one PHP class can inherit from another
How a child class can override some of the functionality of its parent
Working with final classes and methods
Using abstract classes, and
Working with interfaces.

Ready? Let’s get started!

Object-Oriented PHP: Delving Deeper into Properties and Methods

29 April 2011 / 9 Comments

Welcome to the second article in my series on object-oriented PHP programming. In the first article, we looked at the basics of OOP in PHP — including the concepts of classes, objects, properties and methods — and we saw how to create basic classes and objects in PHP.

In this article, you’re going to delve a bit deeper into properties and methods in PHP. This will give you a solid grounding when it comes to using objects in PHP, before we move on to more advanced topics such as inheritance in later articles.

These are the concepts you’ll explore in this article:

Constructors and destructors, which let your objects do specific things whenever they’re created or deleted
Static properties and methods, for creating class properties and methods that are not tied to specific objects
Class constants, which are handy for storing fixed values related to a class
Type hinting, for restricting the types of objects that can be passed to a method
The __get() and __set() magic methods for overloading property accesses
The __call() magic method for overloading method calls

All set to delve deeper into properties and methods? Great! Let’s go!

Object-Oriented PHP for Absolute Beginners

8 April 2011 / 10 Comments

Welcome to the first in a series of tutorials covering object-oriented programming in PHP. In this series you’ll explore the various ideas and concepts involved in object-oriented programming, and learn how to build robust object-oriented PHP applications quickly and easily.

In this tutorial, we’re going to kick things off nice and gently by looking at some really basic concepts of object-oriented programming. You’re going to learn:

What object-oriented programming is
How object-oriented programming can help you write better PHP scripts
Some fundamental concepts, including classes, objects, methods and properties, and
How to start writing object-oriented PHP code.

Ready to explore the world of PHP objects? Let’s get started!

PHP Objects

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