• PHP is open source language, free to download and free to use. You do not require any license for using PHP language. br br • PHP is a scripting language and does not required compilation that's why run quickly. br br • PHP is loosely coupled language mean you does not required to declare the data type of variable therefor easy to use and easy to learn. br br • Cross platform language and run on all the platform - (Mac, Linux, Window Unix, etc.). br br • Compatible with all commonly known databases. MySQL, SQL Server, Oracle, DB2, Access etc. br br • Run on all servers - (Apache, IIS, etc. ). br br • PHP used widely therefor has very large guide line on internet. There are hundreds of Free PHP Tutorial websites, Free PDF Books, PHP blogs and PHP forums. br br • There are hundreds of websites where you can download Free PHP Script, PHP Classes and PHP Modules. br br • PHP is the most popular language and more then 224 million [figure from Wikipedia] websites are using the PHP language.