PHP is a powerful general purpose server side-scripting language. By using PHP you can make dynamic web pages for your websites. PHP is helpful to make any kind of website (CMS, Blog, E commerce, Real Estate, Art Gallery, Directory Listing, Classified, etc.). It is mostly used by website development company for coding of dynamic website. There are so many open source product available on PHP – Click here to know more about PHP Open Source Applications.

Benefit:-
PHP is an open source software
PHP is free to download and use.
Easy to learn
Easy to host on the server
Web development cost is lower then other language
PHP is compatible with many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.)
PHP runs on different platforms like Windows, Linux, Unix, etc.
PHP is compatible with all web servers like Apache, IIS, etc.

Download PHP
You can download PHP for free here: http://www.php.net/downloads.php
Download MySQL Database
You can download MySQL for free here: http://www.mysql.com/downloads/index.html
Download Apache Server
You can download Apache for free here: http://httpd.apache.org/download.cgi