Posted by Chung Leong on 10/09/05 20:40

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().

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.

All this is very confusing of course. Unless there a real reason to use
multiple domain names it'd be easier to just redirect all requests to
one name, possibly with the help of Apache rewrite.

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