Posted by Andy Hassall on 10/09/05 22:09

On 9 Oct 2005 10:40:11 -0700, "Chung Leong" <chernyshevsky@hotmail.com> wrote:

>Andy Hassall wrote:
>> If you want this to work, you'd need a method of migrating the session data
>> from one domain to the other through some shared data storage.
>
>I think you might have misunderstood the situation described by the OP.
>He said he had purchased a new domain name. Presumbly, the name points
>to the same machine. Unless the web server is set up to have different
>session save-path per virtual host, session data are shared by default.
>In any event, I believe you can override the save-path with ini_set().

In that case he already has the shared data storage.

>The problem here is that cookies--hence session ids--don't travel
>across domains. So you need to manually sync the cookies of the two
>domains. One way to do this is to do a round-trip redirection at the
>very beginning. From domain_1, redirect to a page on domain_2 with the
>session id passed on the URL. This page calls session_id($_GET['SID'])
>and session_start(), then redirect back to the original page in
>domain_1. Now both domains will use the same session id. A simpler way
>is to use an invisible inner frame to initialize the cookie in
>domain_2.

Since the shared data storage is the same PHP session data area, then this is
essentially just a simpler case of what I said - the unique ID passed to get at
the shared data is already the session ID.
--
Andy Hassall :: andy@andyh.co.uk :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

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