How to Add Counter Classes with a Global Variable

Tutorial Difficulty Level: Advanced

A grayscale wall with numbers one, two, three
Reading Time: 4 mins

Ever wonder how to add counter/numbered classes to your posts? Is this the fourth post or the seventh? Well, if you have wished upon a star (or even if you didn’t, but it was more like cursing out your computer, that’s fine too), then your wish is about to come true with this tutorial.

In this tutorial’s example, we want our blog posts to have classes like “article-number”, and we can achieve this using the post_class(); function and a counter that we’ll set as a global variable.

It’s not as hard as you think. Also, keep in mind that this is a technique that can be applied to other scenarios too, and it’s not limited to just adding classes to our blog posts. Well, let’s get started, shall we?

Before we begin:

  1. Some familiarity with loops and general PHP will help.
  2. Might want to┬áreview what variables are. I also go over variables with better analogies in an old article of mine on the Pixafy Blog: Understanding WordPress’ $args Variable
  3. Make sure you have a theme that you can edit files in – for my example, I’m using TwentyThirteen. The files I’ll be working in are: functions.php, index.php, and content.php.

What we’re going to achieve:

global-results

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