If you're using it on your pc with windows I recommend wampserver. Once you've installed wampserver you then put the php file in the 'www' folder (accessed from the UI in the system tray). But make sure you create a project folder. Then go to wampserver again and select 'localhost'. You will find your project directory listed there.. btw I recommend that if you don't already have firefox, that you install it first -- it will make setting up wampserver even easier. All this assumes you have windows.. if you use a different operating system there are other bundles you can try e.g. xampp or lamp.
