I guess You are trying to view this page on Your local machine.
Bad news, You have no php installed to Yours machine..
Get WAMP, install it, then it will work.
Or.. sign up for a free hosting service, and upload it there. It will work.
I recommend this site:
By far they are the best I came across.
And You can develop Yours site, You can have 300 Mbyte space,
mysql, php, blablabla.. its good.