Definition: "Backend" refers to the software running on a server, usually PHP-based or some other scripting language that interprets data from front-end input and sends responses back to the front end. "PHP" stands for Hypertext Preprocessor; it's essentially an interpreter for web pages, often used in conjunction with HTML documents for processing and rendering. The word "backend.php" is a specific command-line script or program you might see when running your website, typically embedded at the root of the page that displays it. It's designed to process data from front-end components like forms, text input fields, and links, then send back to the front end through a PHP-based API (Application Programming Interface). The term is often used in web development for services or software that processes user interactions and returns results, similar to how JavaScript executes scripts on web pages.
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