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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 20 million websites and 1 million web servers . [ 2 ] Originally created by Rasmus Lerdorf in 1995, the reference implementation of PHP is now produced by The PHP Group. [ 3 ] While PHP originally stood for Personal Home Page , it is now said to stand for PHP: Hypertext Preprocessor , a recursive acronym . [ 4 ] 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 . [ 5 ]