ID: 14688
Updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Feedback
Bug Type: Session related
Operating System: linux 2.2
PHP Version: 4.2.0RC2
New Comment:
I didn't miss the point. You should probably have stated that your
example showed the problem with simple hrefs as well. I scan things
quickly and if an obvious thing such as trying to do a setcookie and a
redirect in the same request is there, I comment on that and move on.
What you are seeing is a side-effect of having
$HTTP_SESSION_VARS['counter'] and $_SESSION['counter'] and $counter all
be references to the same data. unset($counter) only removes one
reference. It would be inconsistent to make unset() remove all
references, and the most common usage is simply $counter = new_value
which works correctly. Doing a second session_register() on the same
variable doesn't currently do anything since it is already registered
unless of course you have called session_unregister on it. So in
summary, I think this is a fringe case that needs documenting and not
necessarily fixing unless someone can come up with a clean and
consistent fix.
Previous Comments:
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[2002-05-29 16:04:27] [EMAIL PROTECTED]
I see you miss the point. I have made that example of three scripts
with redirects to easy things. You can equaly put links into scripts
and then click them manualy with the same effect. All Set_Cookie and
Redirect headers look fine. Take a look at the first message here from
[EMAIL PROTECTED] I can only speculate why this does not work
in 4.1 or 4.2: when you register variable with session_register php it
puts a referense to variable. When unset function unsets variable,
session variable still hold reference to old variable, though it does
not exist anymore. When you try to reregister variable with
session_register it thinks that that variable already registered, and
does nothing. So whaterver new value you assign id does not reach
session module, even at exit of the script. But in theory session
should reference to the name of variable not variable itself, and if
variable is gone in context so must session registered one. And if you
use session_unregister in the same script as unset, you would get
correct result. (see ### uncomment this to see the difference #
session_unregister("counter");).
I don't want to insult anyone but I am amazed that such simple bug have
not been fixed several monthts yet.
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[2002-05-11 00:06:17] [EMAIL PROTECTED]
Having a SetCookie and a Redirect in the same response causes
unpredictable behaviour and will be browser-dependant. I'd suggest not
relying on this. PHP does send both, so unless you can somehow show us
an example of PHP not actually sending both the Location and the
SetCookie then I don't see how this is a PHP issue.
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[2002-05-11 00:00:03] [EMAIL PROTECTED]
No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
------------------------------------------------------------------------
[2002-04-25 12:43:34] [EMAIL PROTECTED]
4.2.0 final still has the problem. And it is a problem, not an
imagination.
------------------------------------------------------------------------
[2002-04-11 04:18:27] [EMAIL PROTECTED]
FYI, with 4.0.5 my example scripts gives expected result - 4 with
register_globals = on, and the same nothing with register_globals =
off.
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the rest of the comments, please view the bug report online at
http://bugs.php.net/14688
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