PHP is a server site Scripting language The main features of php is; it is open source scripting language PHP: Hypertext Preprocessor PHP (recursive acronym for PHP: Hypertext Preprocessor) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML. Simple It is very simple and easy to use, compare to other scripting language it is very simple and easy, this is widely used all over the world. Interpreted It is an interpreted language, i.e. there is no need for compilation. Case Sensitive PHP is case sensitive scripting language at time of variable declaration. In PHP, all keywords (e.g. if, else, while, echo, etc.), classes, functions, and user-defined functions are NOT case-sensitive. Open Source Open source means you no need to pay for use php, you can free download and use. Platform Independent PHP code will be run on every platform, Linux, Unix, Mac OS X, Windows. Faster It is faster than other scripting language e.g. asp and jsp.