Help With $_SERVER['HTTP_REFERER']

hello there,
can someone tell me how i can make this command

<?php
$website_referer = $_SERVER['HTTP_REFERER'];
if ($website_referer != "http://www.google.com") { echo 'None'; } else { echo 'Google Referer'; }

?>

example: http://www.google.com/search.php .... = echo 'Google Referer';
i try http://www.google.com* but is not working ...

can someone tell me how i can fix this command

thanks

 

take a look at parse_url()
That should be all you need and then just match the host name which should be www.google.com

 

<?php
$website_referer = $_SERVER['HTTP_REFERER'];
if (stristr($website_referer,"google.com") { echo 'None'; } else { echo 'Google Referer'; }

?>

PHP:

 

<?php
$website_referer = preg_replace('~^www\.~', '', parseurl($_SERVER['HTTP_REFERER'], PHP_URL_HOST));
if ($website_referer != "google.com") {
echo 'None';
 } else { 
echo 'Google Referer'; 
}

?>

PHP:

 

I like guardian999's idea. I'm sure danx10's idea works, too.

 

mm....useful for me...