What is PHP?
1.PHP is an acronym for "PHP: Hypertext Preprocessor"
2.PHP is a widely-used, open source scripting language.
3.PHP scripts are executed on the server.
4.PHP is free to download and use.

PHP files have extension ".php" and contains files like css javascript html and php. PHP is free. Download it from the official PHP resource: www.php.net .Php is easy to learn and use.
PHP Syntax:
Example:
short and clear. good job :)@beejayjung