PHP (Hypertext Preprocessor) is a popular, general-purpose scripting language that is widely used in web development. It is a server-side language, which means that the PHP code is executed on the server and the result is sent to the client’s web browser in the form of HTML, XML, or other output.

PHP is often used in conjunction with a database, such as MySQL, to create dynamic, data-driven web applications. It is also used for server-side scripting, command-line scripting, and as a general-purpose programming language.

One of the key benefits of PHP is that it is easy to learn and use, and it has a large and active developer community, which means that there is a wealth of resources and support available for those who are learning or using PHP. It is also highly flexible and can be used to build a wide range of applications, from simple websites to complex web-based systems.