function get_ftp_content($source, $target)
{
    $result = false;
    $config = array('hostname' => FTP_HOST, 'username' => FTP_USER, 'password' => FTP_PASSWORD, 'port' => FTP_PORT, 'timeout' => FTP_TIMEOUT);
    $ftp = new Ftp();
    $ftp->connect($config);
    if ($ftp->existsFile($source)) {
        $result = $ftp->download($source, $target);
    } else {
        access_log('log', 'No documents.');
        //clear_file();
    }
    $ftp->close();
    return $result;
}