.php file extension in browsers

I have recently installed php, apache on windows xp.

I have wrote a simple test file -- test.php

<?php

echo "hello world"

?>

When I plugin the http://localhost/test.php in IE it works fine and
when I plugin the same in OPERA it gives me a file download box.

when I type http://localhost/test instead of http://localhost/test.php
in IE the script still runs fine in the browser.

What am I doing wrong here.

Appreciate your help
Received on Tue Oct 18 02:31:04 2005