Lab Introduction

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Before you begin, make sure that you have the code from the Introduction to PHP Object-Oriented Programming (OOP) for WordPress lab. If you do not have that code, no problem, as you can get it from this GitHub repository.

Let’s talk about the WordPress event-driven system. Then you’ll look at the code in WordPress Core to use how it’s using the PHP construct call_user_func_array in order to call each of the pre-registered callbacks when the event is fired.

It’s important to have a basic understanding of hooks, which are events and why they exist. In this episode, you’ll get a brief review. Make sure you watch it.

Then we’ll discuss what you’ll be doing in this lab.

Additional Resources

If you need a refresher, then make sure you take this lab:

8 Episodes
01:17:56 Runtime

Introducing & Registering WordPress Event

WordPress Plugin API - Introduction & Registering Event Hooks

The Event System in WordPress Plugin API is the cornerstone for developers, as it allows you to extend, enhance, and change the behavior of WordPress. In this lab, you will be introduced to the event-driven mechanism. Then you'll get to work registering callbacks for events (actions and filters) to help you know this important API. Let's dig into add_filter and add_action.

Learn more

You can also find information on the following WordPress Core constructs in Docx:

Whoever says that coding is hard, just smack them.