Le jeudi 10 mai 2007 à 15:24 +0200, Oliver Block a écrit : > Am Donnerstag, 10. Mai 2007 08:59 schrieb Sascha Braun: > > but after a little > > time, the session is just lost. > > That doesn't say anything to me. Could you be more verbose on what you mean by > "the sessin is lost"? :-) I get that too and it's the best description I could give in one sentence. Basically, the session array $_SESSION is emptied. Without notice, warning or error. Just emptied. I tried to track it down with xdebug as well but it's really just loosing it. I will try to work on this problem this week, and basically looking at the last hundreds of posts about sessions in this list, I would narrow it down to the following possible problems and solutions: 1) Unsynched: It is possible that client and server do not share the same notion of time, which is stored in the session cookies, so the session would be expired sooner than expected. A way to test if this is the problem is to set the cookie lifetime to one year or more, and see if it improves anything. However, if this was the problem, timeouts would tend to happen after a definite period of time, not after a random period like I have and like Sascha seems to have as well 2) Mutex 1: The problem might be due to concurrent (or almost) uses of the session, either with AJAX code or with frames, which might mean that the sessions are not complete when accessed, or access is prevented by a blocking write operation on the session file. This should only happen in the context of concurrent requests, and the only possible improvement might be to use session_write_close() as soon as a session use is finished, or to use mutex-aware session handler functions. I wonder if, in this case, the session should really be lost and emptied... maybe a write still allows a read to work... 3) Mutex 2: When using alternative session handlers, these session handlers might not be mutex-aware, so a concurrent access prevents data from being written before it is read. Make sure your session handling code is mutex-aware (apparently there is some code documented in the user comments of the PHP online doc). I hope this helps. I'll try to come back and report if any of these solutions has worked for me. Yannick -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
