Download file

function download_contents($content, $type, $name, $size, $force_download = false) {
    if(connection_status() != 0) return false; // check connection

    if($force_download) {
      header("Cache-Control: public");
    } else {
      header("Cache-Control: no-store, no-cache, must-revalidate");
      header("Cache-Control: post-check=0, pre-check=0", false);
      header("Pragma: no-cache");
    } // if
    header("Expires: " . gmdate("D, d M Y H:i:s", mktime(date("H") + 2, date("i"), date("s"), date("m"), date("d"), date("Y"))) . " GMT");
    header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
    header("Content-Type: $type");
    header("Content-Length: " . (string) $size);

    // Prepare disposition
    $disposition = $force_download ? 'attachment' : 'inline';
    header("Content-Disposition: $disposition; filename=\"" . $name) . "\"";
    header("Content-Transfer-Encoding: binary");
    print $content;

    return((connection_status() == 0) && !connection_aborted());
  }