If you’re just getting started with WordPress, there’s likely a lot of new terminology being thrown at you. Beyond fundamentals like “themes” and “plugins”, you’re probably seeing “actions”, “filters”, and a ton of code snippets with instructions like “just add this snippet to your functions.php file.”
Let’s take a step back and look at WordPress’ functions.php file; what it is, where it lives, and how it works. Once we understand those points, we’ll learn how to add snippets to our WordPress sites without having them accidentally overwritten.
