PHP

PHP (PHP: Hypertext Preprocessor) is a scripting language that helps people make web pages more interactive by allowing them to do more intelligent, complex things. PHP code is run on the web server. It is called a preprocessor because it builds the information before sending it to the computer that visits the web page.

PHP
Paradigmimperative, object-oriented, Procedural, reflective
Designed byRasmus Lerdorf
DeveloperThe PHP Group
First appeared1995 (1995)[1]
Stable release7.3.6 / May 30, 2019 (2019-05-30)[2]
Typing disciplineDynamic, weak
Implementation languageC
OSCross-platform
LicensePHP License[3]
Filename extensions.php, .phtml, .php4, .php3, .php5, .php7, .phps, .php-s, .phar
Websitewww.php.net
Major implementations
Zend Engine, Phalanger, Quercus, Project Zero, HHVM
Influenced by
C, C++, Java, Perl, Tcl[1]
Influenced
Hack

A website programmed with PHP can have pages that are password protected. A website with no programming cannot do this without other complex things. Standard PHP file extensions are: .php .php3 or .phtml, but a web server can be set up to use any extension.[4][5]

Its structure was influenced by many languages like C, Perl, Java, C++, and even Python. It is considered to be free software by the Free Software Foundation.[6]

History

PHP was first created by Rasmus Lerdorf in 1995.[7] It is now developed and improved by a large team of people. Its name at first stood for Personal Home Page, but it was later changed to PHP: Hypertext Preprocessor; using its old acronym in the new name.

Example

An example Hello World program:

<?php
echo "Hello, World!";
?>

It is common to put PHP code inside a HTML document, for example:

<!DOCTYPE html>
<html>
	<head>
		<title>Hello World</title>
	</head>
	<body>
		<?= '<p>Hello World</p>'; ?>
	</body>
</html>

References
  1. Rasmus Lerdorf began assembling C code originally written for CGI scripts into a library and accessing the library's functions, including SQL queries, through HTML-embedded commands in 1994; Lerdorf, Rasmus (2007-04-26). "PHP on Hormones - history of PHP presentation by Rasmus Lerdorf given at the MySQL Conference in Santa Clara, California". The Conversations Network. Archived from the original (mp3) on 2019-01-06. Retrieved 2009-12-11.
  2. "PHP 7.3.6 Release Announcement". PHP.net. The PHP Group. Retrieved 30 May 2019.
  3. "Official PHP License Information". PHP.net. The PHP Group. Retrieved 21 April 2011.
  4. http://www.w3schools.com/php/php_intro.asp Retrieved on 30 October, 2007
  5. "Apache Module mod_mime AddHandler Directive". Retrieved 30 September 2015.
  6. "GPL-Incompatible, Free Software Licenses". Various licenses and comments about them. Free Software Foundation. Archived from the original on 2005-07-22. Retrieved 2007-11-03.
  7. "History of PHP". PHP.net. The PHP Group. Retrieved 18 July 2011.

Other websites
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.