PHP is a programming language that is commonly used for web development. HTML, on the other hand, is a markup language that is used for creating and formatting the structure of a web page.

PHP is a server-side language, which means that it is executed on the server and the result is sent to the client. HTML, on the other hand, is a client-side language, which means that it is executed on the client’s browser.

PHP is used to create dynamic web pages and perform tasks such as storing and retrieving data from a database, performing calculations, and more. HTML is used to create the structure and layout of a web page, including the text, images, and other content.

In short, PHP is a programming language used to create dynamic web pages, while HTML is a markup language used to create the structure and layout of a web page.