Failed to get server file time data, compelling +1, still unable to download, please pointing.

Get server file time data failed, force after +1, still cannot download, please point out:

$host = ' ftp.mozilla.org ';
        $user = ";
        $password = ";
        $remotefile = '/pub/mozilla.org/firefox/releases/30.0b7/linux-x86_64/en-us/firefox-30.0b7.tar.bz2 ';

        $localfile = '/home/username/firefox-29.0.1.tar.bz2 ';

$conn = Ftp_connect ($host);

  $remotetime = Ftp_mdtm ($conn, $localfile);
            if (! ( $remotetime) >= 0) {
                echo ' can\ ' t access remote file time.
';
                $remotetime = $localtime +1;}

   $fp = fopen ($localfile, ' w ');
            if (! $success = Ftp_fget ($conn, $fp, $remotefile, ftp_binary)) {
                echo ' error:could not download file ';
                Ftp_quit ($conn);

------Solution--------------------

Do you have login FTP? Ftp_login ($conn, $user, $password);  

------Solution--------------------
FTP is available for anonymous users

$url = ' ftp.mozilla.org ';
$ftp = Ftp_connect ($url); Connecting to an FTP server
Ftp_login ($ftp, ' Anonymous ', '); Sign in with an anonymous user
$list = Ftp_nlist ($ftp, '/'); Get the file list of the root directory
Print_r ($list);

Array
(
    [0] =/readme
    [1] =/index.html
    [2] =/pub
)

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