PHP: Hypertext Preprocessor PHP <World-Wide Web, programming> (PHP) An {Open Source}, {server-side}, {cross-platform}, {scripting language} used to create dynamic {web pages}. PHP can be embedded in {HTML} using special tags like: <?php echo '<p>Hello World</p>'; ?> This is stored in a file with a ".php" extension. The {web server} passes the file to the PHP interpreter which executes the code in the <?php ... ?> tags. This generates ordinary HTML to send to the {web browser}. PHP is a {recursive acronym}. Latest version: 5.2.3 2007-05-31, as of 2007-08-10. PHP Home (http://php.net/). Cheat sheet (http://www.ilovejackdaniels.com/cheat-sheets/php-cheat-sheet/). (2007-08-10)