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 From:  Matt   4 Jun 2013 17:25 
 To:  Kenny J (WINGNUTKJ)       13 of 17 
40507.13 In reply to 40507.12 
You should be able to use the developer tools in IE to delete the cookies just for tehforum.co.uk.

doohicky
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 From:  Kenny J (WINGNUTKJ)    4 Jun 2013 18:55 
 To:  Matt      14 of 17 
40507.14 In reply to 40507.13 
Yeah, that didn't seem to want to happen - they weren't being deleted no matter how hard I pushed the button. I've now exported all cookies to a text file, edited out the forum ones, cleared IE's cookies fully, and re-imported the text file, and everything seems to be working. Does the multiple-sets-of-cookies-causing-repeated-logging-in theory sound plausible?
Kenny
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 From:  Matt   4 Jun 2013 20:08 
 To:  Kenny J (WINGNUTKJ)       15 of 17 
40507.15 In reply to 40507.14 
Yes.

The HTTP specification allows for cookies with the same name, but different paths. Unfortunately as far as I know PHP doesn't account for this, instead all it does is add all the cookies to a simple single-dimension key-value-pair array (named $_COOKIES) and makes them all available to the script regardless of whether the path matches or not.

And because it's perfectly possible for the browser to format the cookie header so as to send the valid cookie before the invalid one, when PHP processes the header, it simply overwrites any existing entry in the array resulting in the valid cookie never being available to the script.

Which is a bit shit.

doohicky
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 From:  Kenny J (WINGNUTKJ)    4 Jun 2013 21:23 
 To:  Matt      16 of 17 
40507.16 In reply to 40507.15 
Thanks for the explanation!  (Although it's reminded me of just how much I've forgotten about this kind of thing. I'm sure I used to be able to do websites...)
Kenny
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 From:  JonCooper   9 Jun 2013 19:28 
 To:  ALL 17 of 17 
40507.17 
FWIW - I didn't fix my chrome since it wasn't happening anywhere else, it isn't happening here any more - odd
Jon
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