It is the process of developing dynamic, scalable, and secure web products or services using PHP (the server-side scripting language) and is one of the most used technologies in web development.
In using PHP technologies, developers can create websites (or web applications) that can be dynamic, interactive, user-friendly, and tailored to suit specific business' needs. This can be anything from e-commerce portals, customer relationship management solutions, or a custom web application for a business.