PHP facts for kids

Kids Encyclopedia Facts
Paradigm imperative, object-oriented, Procedural, reflective
Designed by Rasmus Lerdorf
Developer The PHP Group
First appeared 1995; 25 years ago (1995)
Stable release 7.0.11 / September 15, 2016; 3 years ago (2016-09-15)
Preview release 7.1.0 Release Candidate 2 / September 16, 2016; 3 years ago (2016-09-16)
Typing discipline Dynamic, weak
Implementation language C
OS Cross-platform
License PHP License
Filename extensions .php, .phtml .php4 .php3 .php5 .phps
Major implementations
Zend Engine, Phalanger, Quercus, Project Zero, HHVM
Influenced by
C, C++, Java, Perl, Tcl

PHP (PHP: Hypertext Preprocessor) is a scripting language that helps people make web pages more interactive, by allowing them to do more things.

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, although a web server can be set up to use any extension.

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.

Wikipedia, which runs on MediaWiki, uses the PHP scripting language.


PHP was first created by a man called Rasmus Lerdorf in 1995. It is now developed and improved by a large team of people.


An example Hello World program:

echo "Hello, World!";

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

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

Related pages

  • Simple English Wikipedia version page, the version of PHP that Wikipedia runs on, under the "Installed software" heading.

PHP Facts for Kids. Kiddle Encyclopedia.