> I've been looking for a script to determine who is on my page (people > have to log in). So far, I've been using a script that updates the time > in the database continuously as long as the person is on the page. That > way, the script could determine whether the user is still online or not. > However, this script has way too many queries and uses too much server > resources. Is there anything else? I'm wondering if the > connection_status() function would help in any way...
Connection_status() is for something else. Remember how HTTP works. The server receives a request, it sends a file, you receive it, and that's it. There is no more communication. There is _no_ way to tell how many people are on your page, plain and simple. What you can do, however, is something like you're doing now. With each _request_ to a page (not every second, or however you're doing it now), update a time in a database. To see how many people are "on your site" you can select a count of how many users have times that are less than X minutes old. You have to assume that if they requested a page X minutes ago, they are more than likely still on your page. Since this isn't rocket science, this assumption will be adequate for your needs. ---John W. Holmes... PHP Architect - A monthly magazine for PHP Professionals. Get your copy today. http://www.phparch.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
