updated multi-form populated email based on accountID

// updated version of http://pastebin.com/Rws5p0T5 for gmuhr
// http://www.gravityhelp.com/forums/topic/dynamic-population-notification-strategy
// NOTE - change here to apply to all forms; drop the _1
add_filter('gform_notification_email', 'populate_admin_email_via_db', 10, 2);
function populate_admin_email_via_db($email,$lead) {

        // setup the array mapping the form ID to the field where the accountID will be available
        // format: form ID => field ID
        $idField = array (
                    1  => 28,
                    8  => 55,
                    3  => 29,
                    7  => 60,
                    11 => 73,
                    5  => 68,
                    4  => 33,
                    9  => 74,
                    13 => 98,
                    14 => 103);

        // if the form_id in the entry is NOT in the array of forms we want to process
        // just return the email address
        if (!array_key_exists($lead['form_id'], $idField)) {
            return $email;
        }

        // set the email we're going to return equal to the email that was passed
        // in from the admin settings, in case something fails
        $selected_email = $email;

        // database connection details
        $dbname  = 'xxxxx';
        $dbuser  = 'xxxxx';
        $dbpass  = 'xxxxx';
        $dbhost  = 'localhost';
        $dbtable = 'xxxxx';

        // changed this line to use the form ID and field ID from the idField array
        // continue: if the form_id is in our array, then grab the accountID and pull the email address
        $account = $lead[$idField[$lead['form_id']]];

        // establish the connection
        $link = mysql_connect($dbhost, $dbuser, $dbpass);

        // if connection was established
        if ($link){
                $sql = "SELECT email FROM $dbname.$dbtable WHERE activation_key='$account' LIMIT 1;";
                $result = mysql_query($sql);

                // deal with the results
                if($result) {
                        // the email address will be the one and only record returned
                        $returned_record = mysql_fetch_row($result);
                        if(!empty($returned_record))
                                $selected_email = $returned_record[0];
                }
                // close the connection if it was established
                mysql_close($link);
        }
    // return an email address one way or the other
    return $selected_email;
}