subdomains : Restricting access

iraklis · 23rd June 2008, 12:55 PM

I have this structure

domain.com
sub1.domain.com
sub2.domain.com
sub3.domain.com

What i`d like to do is allow entrance the the 3 subdomains only for visitors coming from domain.com. If visitors type sub.domain.com in the address bar they should be redirected to www.domain.com.

I have no idea if it is possible and if there is an efficient way of doing this ....

TygerTyger · 23rd June 2008, 02:02 PM

Code:

if (!empty($_SERVER['REFERER']) && strpos($_SERVER['REFERER'], 'domain.com') === false)
{
exit;
}

Since browsers can fake referrer headers aside from some serious work there's no real way to create restrictions, but that will at least deal with those not deliberately trying to get around it.

iraklis · 23rd June 2008, 03:44 PM

Thanks
It looks like it will do the job

Just one thing i noticed
the $_server variable didn`t worked as argument to strpos so i had to use another $ref=$_SERVER['REFERER'].

I`m newbee but it doesn`t seem to me "nice"