Which Programming Language Is Used in WordPress Themes?

WordPress is a content management system (CMS) created in 2005 by Matt Mullenweg and Adam Berry. WordPress is free and open source software released under the GPL. WordPress themes are the end product of a WordPress site’s design and development. A WordPress theme is made up of a series of files and folders.

Themes are typically created by designers and developers who work with WordPress to create a unique look and feel for a site. A WordPress theme typically includes a header file, a style.css file, and one or more templates.