RE: [PHP] online/offline...but on a list of users

> <clip> > > I want to add this same functionality to a forum on the > same site (the > forum > > was custom programmed > > from scratch and not any of the popular ones), but since in a single > thread > > there can be a lot of different > > people/usernames that answer I would prefer _not_ to do a > select lookup > for > > each username... > > any ideas on how else it can be done? > </clip> > > I'd say start with a query that pulls the online users into an array, > then do an array_key_exists() or in_array() against that. > > -------------------------------------------- > > Thanks! Thats a really good idea and one that i didnt think of. > > For now it should be okay as there are just a few hundred users, but > if it gets really big then it might be a bit of a problem... > if you any other ideas please feel free to reply till then > I'll try your > idea out. > What about using the 'in' or 'exists' keyword in sql. for example: select * from (select username from <the rest of your online select statement>) a where a.username in ($username, $username, $username ..) Use some for loop to build up your 'in' statement. A better way to do it is using joins and the exists statement, but its too early for that. :) ************************ This message has been delivered to the Internet by the Revenue Internet e-mail service *************************