Solution to session data loss when using AJAX

Solution to session data loss when using AJAX

El Forum
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#19

10-13-2010, 03:18 AM

[eluser]WanWizard[/eluser]
[quote author="slowgary" date="1286917314"]

Code:
'session_id'     => md5(uniqid($sessid, TRUE))

By hashing a uniqid(), isn't it actually INCREASING the likelihood of a collision?[/quote]

Uniqueid() basically returns a hex representation based on the current time up to the microsecond. The chances of an MD5 collision on a 184bit value are quite small.

I assume that two unqiueid's generated at the same microsecond would be identical, given the algorithm. Which would also generate the same MD5. So I think the answer should be Yes. Question is, how likely is this, and would the randomizer produce a better result?

Messages In This Thread

Solution to session data loss when using AJAX - by El Forum - 12-17-2009, 06:15 AM

Solution to session data loss when using AJAX - by El Forum - 12-17-2009, 06:48 AM

Solution to session data loss when using AJAX - by El Forum - 12-17-2009, 07:12 AM

Solution to session data loss when using AJAX - by El Forum - 03-13-2010, 04:17 PM

Solution to session data loss when using AJAX - by El Forum - 05-10-2010, 06:33 AM

Solution to session data loss when using AJAX - by El Forum - 07-27-2010, 12:49 AM

Solution to session data loss when using AJAX - by El Forum - 10-11-2010, 03:31 PM

Solution to session data loss when using AJAX - by El Forum - 10-11-2010, 04:49 PM

Solution to session data loss when using AJAX - by El Forum - 10-11-2010, 05:29 PM

Solution to session data loss when using AJAX - by El Forum - 10-11-2010, 06:47 PM

Solution to session data loss when using AJAX - by El Forum - 10-12-2010, 12:33 AM

Solution to session data loss when using AJAX - by El Forum - 10-12-2010, 06:29 AM

Solution to session data loss when using AJAX - by El Forum - 10-12-2010, 07:52 AM

Solution to session data loss when using AJAX - by El Forum - 10-12-2010, 08:06 AM

Solution to session data loss when using AJAX - by El Forum - 10-12-2010, 08:13 AM

Solution to session data loss when using AJAX - by El Forum - 10-12-2010, 09:03 AM

Solution to session data loss when using AJAX - by El Forum - 10-12-2010, 10:01 AM

Solution to session data loss when using AJAX - by El Forum - 10-13-2010, 03:01 AM

Solution to session data loss when using AJAX - by El Forum - 10-13-2010, 03:18 AM

Solution to session data loss when using AJAX - by El Forum - 01-20-2011, 06:58 AM

Solution to session data loss when using AJAX - by El Forum - 05-18-2011, 05:00 PM

Solution to session data loss when using AJAX - by El Forum - 05-25-2011, 12:21 PM

Solution to session data loss when using AJAX - by El Forum - 05-25-2011, 03:33 PM

Solution to session data loss when using AJAX - by El Forum - 05-25-2011, 03:54 PM

Solution to session data loss when using AJAX - by El Forum - 05-25-2011, 07:33 PM

Solution to session data loss when using AJAX - by El Forum - 05-26-2011, 08:43 AM

Solution to session data loss when using AJAX - by El Forum - 07-11-2011, 06:10 AM

Solution to session data loss when using AJAX - by El Forum - 07-11-2011, 07:43 AM

Solution to session data loss when using AJAX - by El Forum - 07-11-2011, 08:56 AM

Solution to session data loss when using AJAX - by El Forum - 07-11-2011, 01:21 PM

Solution to session data loss when using AJAX - by El Forum - 08-20-2012, 12:05 PM

Solution to session data loss when using AJAX - by El Forum - 08-23-2012, 08:50 AM

Solution to session data loss when using AJAX - by El Forum - 08-23-2012, 10:20 AM

Solution to session data loss when using AJAX - by El Forum - 08-23-2012, 01:00 PM

Solution to session data loss when using AJAX - by El Forum - 08-23-2012, 01:04 PM