query to get number of users online?

[willms_jay]

can anyone help me with a query that will get number of users online?

i tried this :

PHP Code:

        // Returns the total amount of people online RIGHT NOW!

    function getTotalUsersOnline() {

        $query = "SELECT userid FROM `session` WHERE userid != 0";

        $result = mysql_db_query("sampleci_samplecitynet", $query); 



        if ($result) {

            $numOfRows = mysql_num_rows ($result);

        }

        return $numOfRows;



    } // end getTotalUsersOnline() 


but it doesn't give me the correct number of users online.

can someone assist me?

thanks in advance!

..jordan