The WordPress Plugin Development Cookbook (published by Packt Publishing and authored by WordPress Core Contributor Yannick Lefebvre) is a practical, recipe-based guide. It teaches developers how to create robust, secure, and scalable plugins from scratch. The book covers critical development topics, including:
The first practical exercise in the text involves the manual creation and "installation" of a basic plugin. The workflow is as follows:
A free PDF containing color versions of the book's screenshots and diagrams is officially hosted on the GitHub repository for the third edition. Amazon.com Installing Book Code Samples The workflow is as follows: A free PDF
Create a new folder named after your plugin using lowercase letters and hyphens (e.g., my-custom-plugin ). Creating the Core Plugin File
The book is updated for modern WordPress (5.x and 6.x), the Block Editor (Gutenberg), and coding best practices (security, internationalization, and performance). For developers who learn by doing, this cookbook is infinitely more valuable than a standard manual. For developers who learn by doing, this cookbook
On the GitHub repository for the Third Edition, there is a direct link to download a PDF file that contains . This is a free supplement that enhances the reading and learning experience. You can find this download link on the book's GitHub page, which is a useful resource to bookmark.
Never test new code on a live website. Use tools like , XAMPP , or MAMP to create a sandbox on your computer. 2. Locate the Code Files For developers who learn by doing
The book focuses on practical, real-world application of WordPress APIs. Key areas covered include:
Delete the existing folder via file explorer or FTP before reinstalling.
The book systematically builds your plugin development skills, progressing from foundational concepts to advanced techniques. It's structured so that each chapter focuses on a specific area of development.