PHP is a server-side scripting language designed for web development but also used as a general-purpose programming language . PHP is now installed on more than 244 million websites and 2.1 million web servers . While PHP originally stood for Personal Home Page , it now stands for PHP: Hypertext Preprocessor , a recursive acronym .
PHP code is interpreted by a web server with a PHP processor module, which generates the resulting web page: PHP commands can be embedded directly into an HTML source document rather than calling an external file to process data. It has also evolved to include a command-line interface capability and can be used in standalone graphical applications .