Php doesn't work

[sipi]

Hello, I installed PHP on Apache, I think the configuration is OK, but when I load a PHP page into Mozilla, it look like:

;?>

The code is:

<?php

echo "Hello World";
?>

[swirlee]

What is the address you're typing into the browser. If the server is running locally, it should start with http://localhost/. What versions of PHP and Apache are you running, and what lines have you added to httpd.conf?