Re: stupid crosscookie function

From: Date: Fri, 15 Dec 2000 22:37:15 +0000
Subject: Re: stupid crosscookie function
References: 1 2  Groups: php.general 
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Yes, that's correct. You can share cookies within a sub-domain, but not across domains. It's a security/privacy feature. You can get around it by having a third-party cookie server set a cookie that goes with an image (invisible 1px by 1px if you want) and then having back-channel communications methods of sharing the data. This is how the weasely ad banner companies track you from site to site. :-) Browsers aren't supposed to accept image cookies from third-party domains, but they do anyway...it probably breaks a business model someplace to do the right thing. - Tim ----- Original Message ----- From: "Richard Lynch" <richard@zend.com> To: <php-general@lists.php.net> Sent: Friday, December 15, 2000 5:01 PM Subject: Re: [PHP] stupid crosscookie function > I think maybe you can do it between different sub-domains (eg > www.domain1.com and www2.domain1.com) but not two different domains... > > This is just a theory based on my limited reading of the Cookie spec and its > intent... > > I don't really know.

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