<?php
// Tentukan folder id_file yang boleh di download
$folder = "../doc/";

// Lalu cek menggunakan fungsi id_file_exist
if (!file_exists($folder.$_GET['id_file'])) {
  echo "<h1>Access forbidden!</h1>
<p>&nbsp;</p>
<p> Anda tidak diperbolehkan mendownload id_file ini.</p>";
  exit;
}

// Apabila mendownload id_file di folder id_files
else {
  header("Content-Type: octet/stream");
  header("Content-Disposition: attachment;
  filename=\"".$_GET['id_file']."\"");
  $fp = fopen($folder.$_GET['id_file'], "r");
  $data = fread($fp, id_filesize($folder.$_GET['id_file']));
  fclose($fp);
  print $data;
}
?>