PHP is an open-source, reflective programming language used mainly for developing server-side applications and dynamic web content, and more recently, other software.
The official meaning of PHP is the recursive acronym “PHP: Hypertext Preprocessor” though some people also call it “Pretty Hypertext Preprocessor” or more professionally as “Professional Hypertext Preprocessor”. PHP is mainly focused on server-side scripting, so you can do anything any other CGI program can do, such as collect form data, generate dynamic page content, or send and receive cookies. But PHP can do much more.
The PHP Development Team has recently announced the release of PHP 5.1.1. This is a regression correction release aimed at addressing several issues introduced by PHP 5.1.0 The complete details about all of the changes can be found in the PHP 5 ChangeLog.
Some of the key features in PHP 5.1 are
- A complete rewrite of date handling code, with improved timezone support.
- Significant performance improvements compared to PHP 5.0.X.
- PDO extension is now enabled by default.
- Over 30 new functions in various extensions and built-in functionality.
- Bundled libraries, PCRE and SQLite upgraded to latest versions.
- Over 400 various bug fixes.
- PEAR upgraded to version 1.4.5
If you are upgrading from earlier version of PHP 4.3 or lower, there is an upgrading guide too. You can try the introductory tutorial and then check out the more detailed online manual. Are you are confusing it with phpMyAdmin – it is a tool written in PHP intended to handle the administration of MySQL over the Internet. From a blogging perspective, WordPress hosting needs PHP version 4.1 or greaterMySQL version 3.23.23 or greater!