Official WordPress developer resources including a code reference, handbooks (for APIs, plugin and theme development, block editor), and more.

Want to know what’s going on inside WordPress? Find out more information about its functions, classes, methods, and hooks.

Nov 8, 2016 · Using the WordPress REST API you can create a plugin to provide an entirely new admin experience for WordPress, build a brand new interactive front-end experience, or bring your …

Nov 10, 2025 · WordPress 6.9 introduces the Abilities API. Learn what this new Ability will unlock for developers, and how to use it in your plugins and themes now.

WP-CLI Commands In this article Below is a listing of all currently available WP-CLI commands with links to documentation on usage and subcommands. Looking to learn more about the internal API of …

Jul 30, 2014 · The Plugin Developer Handbook is a resource for all things WordPress plugins. Whether you’re new to WordPress plugin development, or you’re an experienced plugin developer, you should …

Jul 30, 2014 · The Theme Developer Handbook is a repository for all things WordPress themes. Whether you’re new to WordPress themes, or you’re an experienced theme developer, you should …

Mar 28, 2023 · Having a development instance of WordPress is a good way to update, develop, and modify a website without interrupting the live version of…

Mar 28, 2023 · If you need to upload your files to your web server, rename the wordpress directory to your desired name, then use an FTP client to upload the directory to your desired location within the …

May 2, 2019 · This handbook is focused on block development and is divided into five major sections. Getting Started: For those just starting out with block development, this is where you can get set up …