Need some help saving the php file

[moldy]

I am running Ubuntu 11.04 and i have installed php5 via Synaptic. I typed: http://localhost and http://127.0.0.1 into the browser and i the output was: IT WORKS!. But when i constructed a very simple webpage and inserted:

<?php Hello World ?>

I saved it as hello.php on my desktop but but that was it?

I have since opened a terminal and typed: locate php5 and the output was: /etc/apparmor.d/abstractions/php5
Should i have saved the hello.php file to /etc/apparmor.d/abstractions/php5 for it to work?

[moldy]

Won’t be needing a reply because i’ve joined a forum who really do help newbies like myself get to grips with the basics of php.