Category: Back-End Development

WordPress Hooks, Actions, and Filters: What They Do and How They Work

hook | wordpress hooks actions and filters

This article introduces one of the most important topics in WordPress development: WordPress hooks, including action hooks and filter hooks. Hooks are at the core not only of how WordPress plugins work, but nearly all code in the WordPress ecosystem: most WordPress themes use hooks heavily, as does “WordPress core” itself. WordPress hooks are absolutely a must-know topic in WordPress development.


Defer Parsing of JavaScript in WordPress

It’s a common complaint when you run your WordPress site through any “page speed score” tool: “defer parsing of JavaScript” and/or “remove render-blocking JavaScript.” Today, building on an article Fred first wrote in 2015, I’m going to discuss a was to solve that. It’s been possible since WordPress 4.1, which introduced of a new filter, script_loader_tag. This filter lets us easily change the HTML markup of enqueued script elements—that is, of JavaScript files that were correctly added into a WordPress site using WordPress’s wp_enqueue_script function.




How to Create an Excerpt From a Post Without an Excerpt and Limit It by Character Count

wordpress excerpt from the content

WordPress posts have two types of texts associated with them: the post’s content, and its excerpt. The content is the main part of the post, and the excerpt is either filled out in its own field or generated by WordPress by extracting the first part of the content.



Turn on Debugging in WordPress: WP_DEBUG

One could (and perhaps I should) write a whole course on “how to debug in WordPress.” This (unfortunately) isn’t that post, but rather a quick summary of the best first step in debugging WordPress. It is almost the one step you MUST take if you’d going to debug just about anything in WordPress: make sure WordPress is showing the errors by settings WP_DEBUG to true. This isn’t super complicated, but just an invaluable thing to know.


A WordPress LAMP?! An Introduction to WordPress Infrastructure

This article introduces one of the most foundation topics in WordPress development: the server-side software that makes WordPress work. Often referred to as “the stack,” as this article explains the “LAMP stack” that most WordPress sites run on is just an initalism of the software packages of Linux, Apache, MySQL, and PHP. And that stack is just as useful today as it was 15 years ago when WordPress started.


Quickly Add Code Snippets in WordPress

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Debates have raged for ages—and still rage—about how to think about code on a WordPress site. Some people are fast-and-loose types who just want it working quickly as possible. For people in a hurry, the Code Snippets plugin is a quick and effective way to build and manage small quick “WordPress hacks.” While I still think file-system access is a better idea for writing WordPress PHP, I can’t deny the quickness of this (or any) PHP code snippets plugin.


4 Steps to Become a WordPress Plugin Developer

This article will take you by the hand and lead you to become a WordPress plugin developer. We’ll analyze when the circumstances call for writing a plugin, where to place your plugin code and some best practices, and give you a taste of a few WordPress concepts regarding plugin development while coding a simple plugin.