note 13368 added to function.session-set-save-handler.php

The garbage collection procedure is called when the session is started up with session_start() or implicitly through session_register(). It is not called all the time, but with a probability defined in session.gc_probability in your php.ini. For example, in the example of the previous user, You'd write something like... function gc($maxlifetime) { global $sess_save_path; if (!dir=@opendir($sess_save_path)) { return false; } $return=true; while($file=readdir($dir)) { if (!strstr($file,'sess_')) { continue; } if (strpos($file,'sess_')!=0) { continue; } if (!($atime=@fileatime("$sess_save_path/$file")) { $return=false; continue; } if (time() > $atime + $maxlifetime) { $return = (@unlink("$sess_save_path/$file")) ? $return : false; } } closedir($dir); return $return; } /* I apologize for the bugs, I don't use a file based system. Note that some operating systems are optimized to not record the access time in the file system. If that is the case, modify the code to use touch() and check the modification time. */ -terry http://www.php.net/manual/en/function.session-set-save-handler.php