Description
WordPress plugins can range from a few lines of code to complete software products used by thousands of websites. Building WordPress Plugins From the Root Up teaches developers how to move beyond simply making a feature work and begin building plugins with professional architecture, security, maintainability, and long-term growth in mind.
Readers learn how the WordPress plugin system works, how to use actions and filters effectively, create settings and administration interfaces, manage data, build REST endpoints, work with AJAX and external APIs, schedule tasks, and interact safely with the WordPress database. Security topics include validation, sanitization, escaping, nonces, capability checks, permissions, and protecting sensitive operations.
The book also explores debugging, testing, performance, compatibility, migrations, Multisite, release preparation, vulnerability response, WordPress.org requirements, licensing, automatic updates, and commercial plugin considerations. A practical sample plugin is developed throughout the guide so readers can see how individual WordPress concepts fit together inside a real project.
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