PHP is a general-purpose scripting language that is especially suited for web development. PHP generally runs on a web server. Any PHP code in a requested file is executed by the PHP runtime, usually to create dynamic web page content. It can also be used for command-line scripting and client-side GUI applications. PHP can be deployed on most web servers, many operating systems and platforms, and can be used with many relational database management systems.
PHP is available free of charge, and the PHP Group provides the complete source code for users to build, customize and extend for their own use.PHP is installed on more than 20 million websites and 1 million web servers. Significant websites are written in PHP including the user-facing portion of Facebook, Wikipedia, Yahoo!, MyYearbook, Digg, Joomla, WordPress, YouTube, and Tagged.
Career Oppurtunities in PHP
More than 5000, small to mid size software companies in india working on PHP projects. They constantly recruit PHP developers (both freshers and experienced). Plenty of Job Openings available for PHP developers who knows few Content Management Systems like Joomla, Wordpress, Smarty, OsCommerce etc.