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Tag Archives: how to

Chain Methods – PHP OOP Tutorial

Chain Methods

It’s time to make our Pet class a little more interactive. We can make our pets walk and rest. Our pet can do a chain of events. Using chain methods makes running multiple methods at once cleaner and more efficient. Let’s learn how to use chain methods. In our Pet class, add this bit of code. [crayon-5a6355462cad6092303083/] We’re using a …

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Magic Methods – PHP OOP Tutorial

Magic Methods

PHP provides some magic methods that run when an event occurs. You’ve already seen an example of a magic method with the __construct() method. This method runs when a user creates an instance of the Pet class.  Let’s take a look at some of the other magic methods we can use in our classes. Using Magic Methods In your pet.class.php …

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Interfaces – PHP OOP Tutorial


In this tutorial, you’ll learn how to create interfaces and why you should use them. They are very similar to abstract classes. At the end of this tutorial, we’ll discuss the differences and the benefits of each one. We’ll be creating something similar to our recipe and cookie class in our abstraction tutorial. Creating Interfaces Create a file called index.php …

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Abstract Classes – PHP OOP Tutorial

Abstract Classes

Today, we’ll be discussing what abstract classes are and how we could use them. There will be times where you’ll create a class that you don’t want anyone to use directly, but instead extend it. Let’s take a closer look at this Creating Abstract Classes We’re going to deviate from our Pet class for a bit. Mostly because we don’t …

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Constants – PHP OOP Tutorial


Constants are variables that don’t change value during the lifetime of a program. Defining constants in classes are a bit different than defining constants outside of a class. Defining Constants In our CanadianPet class, add this bit of code. [crayon-5a6355462fdc0411669308/] To define a constant, we use the const keyword. We then follow it by the name of the constant and …

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Inheritance – PHP OOP Tutorial


Let’s talk about inheritance. We’ve talked about how to extend a class and covered encapsulation. Inheritance is when a class extends another class and inherits the properties and methods of that class. The main advantage to this is the ability to use a parent class and modify it for a special use without actually modifying the actual class itself. You …

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