PHP (Hyper text Pre Processor) is a scripting language commonly used for web applications. PHP can be easily embedded in HTML. PHP generally runs on a web server. It is available for free and can be used across a variety of servers, operating systems and platforms.
PHP is an open source and widely used general purpose scripting language, designed for web development for producing dynamic web pages. PHP can be embedded into HTML and runs on a web server. The server needs to be configured for processing PHP code and generating web content. PHP can be deployed on most web servers. PHP script can run on almost all platforms.
- PHP Introduction (thephpbugs.wordpress.com)