Session Drops From www. to no www.

[SithLordKyle]

I have a login function for my site and have been having session problems lately.  I finally narrowed it down and realized that some links are http://mysite.com and some are http://www.mysite.com.  When I login at http://mysite.com then move to any folder where the address is http://www.mysite.com, the session gets dropped and I'm not logged in.  However, if I take out the www, the session is there.

 

Is there any way to have it encompass both or prevent this from happening?  Or should I go through and re-code all the pages so the links point to http://www.mysite.com or http://mysite.com exclusively?

[genericnumber1]

You would have to make the session id be contained in two cookies instead of just one. Changing the links would be simpler.

[unkwntech]

If it's a matter of users going to http://domain.tld instead of http://www.domain.tld then just add a check to the top of the pages.

if(!preg_match('www.', $_SERVER['HTTP_HOST'])) 
{
    header('Location: http://www.doamin.tld');
}

[SithLordKyle]

Thanks!  I'll try the second option first, then go back through the code and change out the links.