How to run php files using wamp server?

Let me explain today how to use the wamp server to run the PHP files.  First of all download the Latest wamp server from here:
http://www.wampserver.com/and install the server.



Step 2:
Run wamp server by this selction
start->All programs->Wamp server->Start wamp server

Now you can see the w icon in system tray.

Step 3: Create PHP file
Let us create our php file first.
Open notepad and type