PHP
 | |
| Paradigm | imperative, object-oriented, Procedural, reflective |
|---|---|
| Designed by | Rasmus Lerdorf |
| Developer | The PHP Group |
| First appeared | 1995[1] |
| Stable release | 7.3.6 / May 30, 2019[2] |
| Typing discipline | Dynamic, weak |
| Implementation language | C |
| OS | Cross-platform |
| License | PHP License[3] |
| Filename extensions | .php, .phtml .php4 .php3 .php5 .phps |
| Website | www |
| Major implementations | |
| Zend Engine, Phalanger, Quercus, Project Zero, HHVM | |
| Influenced by | |
| C, C++, Java, Perl, Tcl[1] | |
| Influenced | |
| Hack | |
| |
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.
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]
Wikipedia, which runs on MediaWiki, uses the PHP scripting language.
History
PHP was first created by a man called Rasmus Lerdorf in 1995.[7] It is now developed and improved by a large team of people.
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>
Related pages
- Simple English Wikipedia version page, the version of PHP that Wikipedia runs on, under the "Installed software" heading.
References
- ↑ 1.0 1.1 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" (mp3). The Conversations Network. Retrieved 2009-12-11.
Every day I would change the language drastically, and it didn't take very long, so by 1995, mid-1995 or so, PHP looked like this. This isn't that far from what PHP looks like today, actually.
{{cite web}}: External link in|quote= - ↑ "PHP 7.3.6 Release Announcement". PHP.net. The PHP Group. Retrieved 30 May 2019.
- ↑ "Official PHP License Information". PHP.net. The PHP Group. Retrieved 21 April 2011.
- ↑ http://www.w3schools.com/php/php_intro.asp Retrieved on 30 October, 2007
- ↑ "Apache Module mod_mime AddHandler Directive". Retrieved 30 September 2015.
- ↑ "GPL-Incompatible, Free Software Licenses". Various licenses and comments about them. Free Software Foundation.
- ↑ "History of PHP". PHP.net. The PHP Group. Retrieved 18 July 2011.
Other websites
- Official PHP website
- PHP Tutorial for beginners