301 Redirect from http:// to http://www.

This code is a 301 redirect from: http://yoursite.com to http://www.yoursite.com

[php]<?php
if (!strstr($_SERVER['HTTP_HOST'],'www')){
header('HTTP/1.1 301 Moved Permanently');
header('Location: http://www.' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
exit();
}
?>[/php]

must have took you some time to color it.
nice script

The forum has a functions that highlights PHP script like this, I did not color it manually