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PHP, a recursive acronym for "PHP: Hypertext Preprocessor," is a popular, open-source scripting language used primarily for web development. As a server-side language, PHP code is executed on a web server before the resulting output (typically HTML) is sent to a user's web browser. This process allows for the creation of dynamic, interactive web pages and applications.

Core functions and uses

Dynamic content: PHP can generate dynamic web page content, allowing websites to change based on user input, time, or other data.

Database integration: It has excellent compatibility with many types of databases, such as MySQL, enabling developers to add, modify, and delete data in a database.

Web applications: PHP is the foundation for major content management systems (CMS) like WordPress and Drupal, and it powers large websites like Wikipedia and Facebook.

Frameworks: Developers often use frameworks like Laravel and Symfony to build robust and scalable applications more efficiently.

eCommerce: It is widely used for building eCommerce platforms and other web applications.

Server-side scripting: PHP can process user data from forms, manage user sessions and cookies, and control user access.

Command-line scripting: It can be used outside of web development to automate tasks and perform other system-level functions.