I am facing some problem with my php session. I have deployed a plugin for file management in my moodle application.
The new plugin home page is behaving unexpectedly and is destroying the actual session of my application and is generating new session_id().
Also when I am trying to view session contents using print_r($_SESSION), it is showing
"PHP_Incomplete_Class_Name" in it.
Actually PHP_Incomplete_Class_Name has nothing to do with session regeneration.
This behaviour appears when you (or your cms/framework/whatever you have) call session_start() before each serialized object's class definition has been parsed.
So you need to include all classes before you started session.
来源：https://stackoverflow.com/questions/5348457/problem-with-php-session-object