When I learned math, I didn’t really understand the modulus function. In fact, it was until I learned PHP that I understood the value of a remainder from division. PHP’s role in making websites makes the modulus operator (or modulo) much more important than it ever was in math class for me.

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.

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.

Welcome to this discussion of PHP loops: what loops are, whey they’re important, and how to use PHP while() loops. This article continues our series explaining the basics of PHP for WordPress development.

Welcome to this introduction to PHP control flow! This article continues our series explaining the basics of PHP for WordPress development.

Welcome to this article on how to use PHP in HTML! Here, we try to get specific about exactly how PHP and HTML interact, at the level of a specific .php file. In other words, how do you actually include PHP in HTML, and what rules can and can’t you follow in weaving PHP and HTML together?

Welcome to this rundown on return in PHP! This article continues our series explaining the basics of PHP for WordPress development.

Welcome to this rundown on echo in PHP! This article is part of our series explaining the fundamentals of PHP for WordPress development, so that you can start learning the language of WordPress “under the hood” and unlock the powers of a full-fledged WordPress developer.

This article is an accessible dive into one of the bedrock concepts of modern programming: functions.