Close: You mix both of these ideas.

Create a custom session handler. This handler creates user entries in a 
database. Then when you want to know how many are online you do a count on 
the number of user entries in the table. Play around with different 
gc_probability values to tune the efficiency.



On 9/13/05, bruce <[EMAIL PROTECTED]> wrote:
> 
> hi...
> 
> anybody have pointers to trying to tell who/how long someone is logged 
> into
> a system/site. i've thought about setting a session var, but i'm not sure
> how to read/tabulate this var across the entire group of people who'd be
> logged in. i've also thought about keeping track in a db tbl.. however, 
> i'm
> still not sure that i've got a good way of tracking who's logged in, and
> still on...
> 
> a possible approach would be to have the app periodically update the 
> system
> whenever a logged in user goes from page to page...
> 
> so, any thoughts/ideas/etc...
> 
> -thanks
> 
> bruce
> [EMAIL PROTECTED]
> 
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