Question, im trying to grab just the root of HTTP_REFERER.

The below will work but sometimes RERERER is like this

http://www.mysite.com/whatever/whatever.html

And of course in that case the key exist will be false. So whats the best way to limit REFERER to just root.


$ref = $_SERVER['HTTP_REFERER'];

$ok_array = array('http://www.mysite.com', 'www.mysitel.com', 'mysite.com');

if (array_key_exists($ref, $ok))
{
//do something
}



I do understand that REFERER could be blank for non referrers but that will be fine, i am trying to hardcode just my site as permitted, the rest can do what they want.

i guess i could use SERVER_NAME right

Thanks.

No, server name will be your server.
You want to use parse_url():

if (!empty($ref))
{
$domain = parse_url($ref, PHP_URL_DOMAIN);
in_array($domain, $ok_array))
{
// its in the array
}
}


so with your example, that would create $domain with the value of "www.mysite.com"