In this article, we explore WordPress user metadata, usually called simply WordPress user meta.

This article describes how to work with WordPress custom fields, also called post meta. In it, we describe how to use WordPress’s post meta PHP functions, especially get_post_meta() and update_post_meta(), and provide in-depth code demos as well as practical advice for working with custom fields tools like Pods and Advanced Custom Fields.

In this video and text Quick Guide, we present a basic use of WP_Query inside a WordPress shortcode, to show the post titles of the five most recently published posts. We’ve designed this Quick Guide to be a simple intro to using WP_Query in general, as well as to using WP_Query to display post titles and other post data inside a shortcode specifically.

Our focus today is PHP math. Or “PHP maths,” if you prefer British English. We’re not going to teach you the basics of mathematics itself, but just explore some of the common ways we use math in our PHP code and some of the less-clear things that end up super-valuable for web development using the PHP programming language.

In PHP, conditions are the core of conditional statements such as if-statements, and of certain other control structures like while() loops.

This video and text Quick Guide explains how to prevent browser caching of CSS files in WordPress. The CSS cache busting tricks here will work outside WordPress, too: you’ll just need your own method of adding query strings.

In this text and video Quick Guide, we’ll explain how to deactivate a WordPress plugin via FTP.

The goal of this article is for you to thoroughly understand PHP arrays. We’ll cover what they are, and highlight a few less-known things that even experienced PHP developers may not have known or realized.

This Quick Guide covers how to use code to change your WordPress post titles. This is separate from manually changing one or more WordPress post titles, which you can do without code. Instead, it’s the kind of thing you’d want to use to change something about a lot of post titles at once, like adding “(Sale!)” in front of all 200 products in a product category.

WordPress’s get_queried_object() function has the distinction of being, I think, the most useful core function in WordPress that I didn’t know about for the longest time.