Getting warning on ftp_get() in PHP

I try to retrieve a text file using ftp_get() and when I execute the script I get warning:

ftp_get() [function.ftp-get]: Can't open data connection

Can some one give some clue what is wrong. This was working on my previous hosting/server since I moved it it broke. Are there some specific PHP configurations. I checked the phpinfo and the FTP support is enabled. The connection got resource id and the username, pass开发者_C百科word and ftp host work through CuteFTP.

function _getFtpFile( $fileName = '' ) {
    if($fileName == '') {
        return false;
    }

    $model = $this->getModel();
    $params =& $model->getParams();

    $vebraHost = $params->get('vebra_host');
    $vebraUser = $params->get('vebra_username');
    $vebraPass = $params->get('vebra_password');
    $localFile = JPATH_BASE.'/tmp/tmp.csv';

    // Delete the file in case it exists
    @unlink($localFile);

    // set up basic connection
    $connId = ftp_connect($vebraHost);

    // login with username and password
    $loginResult = ftp_login($connId, $vebraUser, $vebraPass);

    // turn on passive mode transfers
    ftp_pasv($connId, true);

    // try to download $server_file and save to $localFile
    if (!ftp_get($connId, $localFile, $fileName, FTP_BINARY)) {
        $file = false;
    } else {
        $file = $localFile;
    }

    // close the connection
    ftp_close($connId);

    return $file;
}

To be honest, this sounds like an FTP problem, not a PHP problem, as a "Can't open data connection" is an FTP error 425, which is a FTP protocol level error. There are plenty of problems that an FTP server can cause, especially one that is misconfigured.

If I were to guess, I would say the problem lies within the configuration of the FTP server, possibly in the active/passive settings, but probably somewhere in their firewall settings. It could also lie in yours, but that seems unlikely, as you can still connect via CuteFTP.

Is the FTP server a remote server, or is the same one that script is hosted on? It's very possible there could be port conflicts if they are the same. I would get in contact with your hosting's support, see if they recognize it as an issue.

it's possible that PHP doesn't have permissions to write to the 'lgw' subdirectory.

What are the permissions on this directory?