public function transmit_file($id, $size = '', $disposition = 'attachment')
{
$item = $this->one($id);
#validation
if (!count($item)) {
throw new ApplicationException('No file specified');
}
if ($item['status'] != 0) {
throw new ApplicationException('Access Denied');
}
$size = UploadUtils::check_size($size);
$filepath = $this->get_upload_path($id, $item['ext'], $size);
$filename = str_replace('"', "'", $item['iname']);
#quote filename
header('Content-type: ' . UploadUtils::get_mime4ext($item['ext']));
header("Content-Length: " . filesize($filepath));
header('Content-Disposition: ' . $disposition . '; filename="' . $filename . '"');
#logger('transmit file '.$filepath." $id, $size, $disposition, ".UploadUtils::get_mime4ext($item['ext']));
$fp = fopen($filepath, 'rb');
fpassthru($fp);
}
