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May 18

What is PHP?

PHP (a recursive acronym for PHP: Hypertext Preprocessor) is a computer scripting language, originally designed for producing dynamic web pages. It is for server-side scripting, but can be used from a command line interface or in standalone graphical applications.

While PHP was originally created by Rasmus Lerdorf in 1995, the main implementation of PHP is now produced by The PHP Group and serves as the de facto standard for PHP as there is no formal specification. Released under the PHP License, the Free Software Foundation considers it to be free software.

PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

It generally runs on a web server, taking PHP code as its input and creating web pages as output. It can be deployed on most web servers and on almost every operating system and platform free of charge.

PHP is installed on more than 20 million websites and 1 million servers, although the number of websites with PHP installed has declined since August 2005.

It is also the most popular Apache module among computers using Apache as a web server.

The most recent major release of PHP was version 5.2.6 on May 1, 2008. There are some changes that programmers will need to know about to keep their old scripts running smoothly.

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