Most of other languages have functionality that allows for the user to specify an action that will be performed when the program exit.  I don't seem to find this type functionlity in PHP.  Especially when session times out.

This type of feature should allow user to submit one or more actions to be performed on the destruction of session either as timeout or as an explicit destroy.

This type of feature would be very useful when interacting with external application engines.

Thanks for your consideration.

Greg