Brad Williams & Justin Tadlock 
Professional WordPress Plugin Development [PDF ebook] 

Extend Word Press with plugins using this advanced Word Press development book, updated for the current version
This significantly updated edition of Professional Word Press Plugin Development addresses modern plugin development for Word Press, the highly popular content management system (CMS). If you’re using Word Press to create and manage websites, Word Press plugins are the software that can extend or enhance CMS functionality. This book offers guidance on writing plugins for Word Press sites to share or sell to other users.
The second edition of Professional Word Press Plugin Development covers the building of advanced plugin development scenarios. It discusses the plugin framework and coding standards as well as dashboards, settings, menus, and related application programming interfaces (APIs). Additional topics include security, performance, data validation, and SQL statements.
* Learn about the power of hooks in Word Press
* Discover how Java Script and Ajax will work in your site
* Understand key technologies: Block Editor/Gutenberg, JS/React, PHP, and the REST API
* Create and use custom post types and taxonomies.
* Creating custom dashboard menus and plugin settings
* Work with users and user data
* Schedule tasks and utilizing Cron
* Performance and security considerations
Written by experienced plugin developers, Professional Word Press Plugin Development also helps you internationalize and localize your Word Press website. Find out about debugging systems and optimizing your site for speed. As Word Press use continues to increase, you can elevate your professional knowledge of how to extend Word Press through plugins.

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