By default there is 1% chance for gc to be called by PHP. If you want to test if gc() is fired, increase *session.gc_probability *close to *divisor*: http://www.php.net/manual/en/session.configuration.php#ini.session.gc-probability Then watch SQL log for that query.
Anyway, expires should be current timestamp + Session.timeout config I know, PHP and sessions - nothing but sorcery :D On Wednesday, August 1, 2012 9:12:13 AM UTC+2, Crazy wrote: > > I'm having some issues with my sessions. > > It's probably configuration somewhere, but don't know what to change/where > to look. > > I'm using database sessions for my cake application, these sessions are > not getting cleaned up. > > The app in question I have the issue on is an old one written on 1.3.10 > running with php version 5.3.5. The garbage collection function in the 2.x > branch is the same so don't think the framework version will matter. > > I've tracked down the issue to the function __gc located in the > CakeSession class and that function is registered there in the php > session_set_save_handler function, this is the function in question: > > /** > * Helper function called on gc for database sessions. > * > * @param integer $expires Timestamp (defaults to current time) > * @return boolean Success > * @access private > */function __gc($expires = null) { > $model =& ClassRegistry::getObject('Session'); > > if (!$expires) { > $expires = time(); > } > > $return = $model->deleteAll(array($model->alias . ".expires <" => > $expires), false, false); > return $return; > } > > Now, the comments say that $expires is a timestamp, but this isn't correct > according to the php docs: > > > gc($lifetime) > The garbage collector callback is invoked internally by PHP periodically in > order to purge old session data. The frequency is controlled by > session.gc_probability and session.gc_divisor. The value of lifetime which is > passed to this callback can be set in session.gc_maxlifetime. Return value > should be TRUE for success, FALSE for failure. > > The value for $lifeime, so gc_maxlifetime in php.ini is the following: > > > ; After this number of seconds, stored data will be seen as 'garbage' and > ; cleaned up by the garbage collection process.session.gc_maxlifetime = 3600 > > So this results in a query that never deletes anything: > > delete from cake_sessions where expires < 3600; > > Could someone clarify what I'm doing wrong or if this is an issue in cake > itself? > > > I've posted this on ask.cakephp.org as well, when I find the answer I'll > make sure to update both locations. > > > http://ask.cakephp.org/questions/view/database_sessions_garbage_collection_issue > > -- Our newest site for the community: CakePHP Video Tutorials http://tv.cakephp.org Check out the new CakePHP Questions site http://ask.cakephp.org and help others with their CakePHP related questions. To unsubscribe from this group, send email to cake-php+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/cake-php