PHP is an open-source server-side scripting language designed for Web development to produce dynamic Web pages. The code is interpreted by a Web server with a PHP processor module which generates the resulting Web page. PHP can be deployed on most Web servers and also as a standalone shell on almost every operating system and platform, free of charge. While PHP originally stood for Personal Home Page, it is now said to stand for PHP: Hypertext Preprocessor (Source WikiPedia)
|Paradigm||Imperative, functional, object-oriented, procedural, reflective|
|Designed by||Rasmus Lerdorf|
|Developer||The PHP Group|
|Stable release||7.0.0 / December 3, 2015|
|Typing discipline||Dynamic, weak|
|Implementation language||C (primarily; some components C++)|
|OS||Cross-platform (Unix-like systems, Windows, other 32-bit and 64-bit platforms)|
|License||PHP License (most of Zend engine under Zend Engine License)|
|Filename extensions||.php, .phtml, .php3, .php4, .php5, .phps|
|Zend Engine, HHVM, Phalanger, Quercus, Project Zero, Parrot|
|Perl, C, C++, Java, Tcl|
PHP is a server-side scripting language designed for web development but also used as a general-purpose programming language. Originally created by Rasmus Lerdorf in 1994, the PHP reference implementation is now produced by The PHP Group. While PHP originally stood for Personal Home Page, it now stands for the recursive backronym PHP: Hypertext Preprocessor.
PHP code may be embedded into HTML code, or it can be used in combination with various Web template systems and web frameworks. PHP code is usually processed by a PHP interpreter implemented as a module in the web server or as a Common Gateway Interface (CGI) executable. The web server combines the results of the interpreted and executed PHP code, which may be any type of data, including images, with the generated web page. PHP code may also be executed with a command-line interface (CLI) and can be used to implement standalone graphical applications.
The standard PHP interpreter, powered by the Zend Engine, is free software released under the PHP License. PHP has been widely ported and can be deployed on most web servers on almost every operating system and platform, free of charge.
The PHP language evolved without a written formal specification or standard until 2014, leaving the canonical PHP interpreter as a de facto standard. Since 2014 work has been ongoing to create a formal PHP specification.