Ist Thing:
PHP was written by the Danish/Greenlandic programmer Rasmus Lerdorf in 1994 to maintain his personal homepage and named it as Personal Home Page Tools. After Lerdorf combined it with his own Form Interpreter to create PHP/FI (this release is considered PHP version 2).
Zeev Suraski and Andi Gutmans, two Israeli developers at the Technion IIT, rewrote the parser in 1997 and formed the base of PHP 3, changing the language’s name to the recursive initialism PHP: Hypertext Preprocessor. The development team officially released PHP/FI 2 in November 1997 after months of beta testing. Public testing of PHP 3 began and the official launch came in June 1998. Suraski and Gutmans then started a new rewrite of PHP’s core, producing the Zend Engine in 1999. They also founded Zend Technologies in Ramat Gan, Israel, which actively manages the development of PHP.
The Histories of PHP:
| Version | Release date | Most important changes |
|---|---|---|
| PHP 1.0 | June 8, 1995 | Officially called “Personal Home Page Tools (PHP Tools)”. This is the first use of the name “PHP”. |
| PHP Version 2 (PHP/FI) | April 16, 1996 | Considered by its creator as the “fastest and simplest tool” for creating dynamic web pages . |
| PHP 3.0 | Jun 6, 1998 | Development moves from one person to multiple developers. Zeev Suraski and Andi Gutmans rewrite the base for this version. |
| PHP 4.0.0 | May 22, 2000 | Added more advanced two-stage parse/execute tag-parsing system called the Zend engine. |
| PHP 4.1.0 | Dec 10, 2001 | Introduced the superglobals ($_GET, $_POST, $_SESSION, etc.) |
| PHP 4.2.0 | April 22, 2002 | Disabled register_globals by default |
| PHP 4.3.0 | Dec 27, 2002 | Introduced the CLI, in addition to the CGI |
| PHP 4.4.0 | July 11, 2005 | |
| PHP 5.0.0 | July 13, 2004 | Zend Engine II with a new object model. |
| PHP 5.1.0 | Nov 24, 2005 | Performance improvements with introduction of compiler (CV) variables in re-engineered PHP Engine. |
| PHP 5.2.0 | Nov 2, 2006 | Enabled the filter extension by default |
Please check http://en.wikipedia.org/wiki/Php