PHP stands for the PHP HyperText Preprocessor. PHP is server side scripting language. Server Side means that any user request a PHP page in the browser. Then the request is send to the server and the server then compile the code at the server side and convert is to html and return to the client or user. PHP is one of the most powerful server side scripting language. As it is freeware, Open Source, Platform Independent.

PHP is free to use as you have to pay nothing. It is open source lanuguage  to so that you can use the PHP Script  and make it more better. and one of the most important is that it is platform Independent.

What is Platform Independent?

It means that the same coding can run on windows as well as Linux platform.