Hi all,
        I need store all the userid's connected to my site, in a
database. the database, if the user has closed his browser a php script
will check after intervals of a few minutes, if the user is not logged in,
then changed relating to that user, will be undone.
my quesiotns are ,

1) how do i get a user's ID.
2) what sort of check do i put to see if the variable is destroyed or not.

thanx in advance

Saquib Farooq
Systems @ SDNPK 

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