Re: refresh for php/mysql chat

Put a timestamp next to their entry - update the tmiestamp each time they make a request. If the timestamp is less than time() - refresh_time, you can assume they're gone. > Also, to show the users online, I simply do a "select" retrieve from the > users table, and I delete an entry if the user logs out. But what if the > user does not log out and simply closes the window - what have you done / or > would do to delete the entry from the table? Is there a way to check all the > cookies (I'm using cookie for login) and see if there is a certain value of > the cookie that does not exist? If I could do that, then I could delete the > entry... > > > Thanks, > sarahana