Hi,
I've just managed to pin down a strange intermittent bug that I thought was
due to some peculiarity in my php application.
It's actually a problem with sessions. I have this code:
if (!session_is_registered("profile"))
{
$profile = array();
$profile_times = array();
$datacache = array();
$datacache_times = array();
session_register("profile", "profile_times", "datacache",
"datacache_times");
}
The idea is that on the first run, "profile" is not registered and that
causes all the others to become registered.
It works just fine.
After a long period of time (keeping the same browser and thus session open
all day) I found that the contents of $datacache_times are unset, and are
in fact no longer registered in the session! (verified by looking at the
session data and by debugging with session_is_registered).
None of the code anyway unregisters things from the session, and the other
stuff is all there.
Any ideas why this might be happening? Why only that variable?
I use
unset($datacache[$key]);
unset($datacache_times[$key]);
to periodically to trim aging data from the session.
Could this be causing it? I do the same thing on the $profile and
$profile_times arrays, but they are still present in the data.
The session data is stored in a mysql DB.
Have I missed something obvious?
--Wez.
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