FTP ændring af mappe

hej eksperter jeg har denne ftp uploader fra php manualen men den smider aller filer ud i root hvordan får jeg dem flyttet ind i en mappe?

det er det jeg har:
<?php
if($_POST[submit]){
$ftp_server = 'ftp.kpost.dk';
$ftp_user_name = 'kpost.dk';
$ftp_user_pass = 'pass...';
$destination_file = $_POST['navn'];
$source_file = $_POST['file'];


// set up basic connection
$conn_id = ftp_connect($ftp_server);

// login with username and password
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);

// check connection
if ((!$conn_id) || (!$login_result)) {
        echo "FTP connection has failed!";
        echo "Attempted to connect to $ftp_server for user $ftp_user_name";
        exit;
    } else {
        echo "Connected to $ftp_server, for user $ftp_user_name<br>";
    }
// upload the file
$upload = ftp_put($conn_id, $destination_file, $source_file, FTP_BINARY);

// check upload status
if (!$upload) {
        echo "FTP upload has failed!";
    } else {
        echo "Uploaded $source_file to $ftp_server as $destination_file";
    }

// close the FTP stream
ftp_close($conn_id);
}
?>