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PHP forces users to download by adding http response headers

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Release: 2016-07-25 08:46:11
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In PHP, you can set the content-type of the header to force users to download the content instead of opening it directly in the browser. This is achieved by the following code:

downloadFile.php

  1. $filename = $_GET['file']; //Get the fileid from the URL
  2. // Query the file ID
  3. $query = sprintf("SELECT * FROM tableName WHERE id = '%s'",mysql_real_escape_string($filename));
  4. $sql = mysql_query($query);
  5. if(mysql_num_rows($sql) > 0){
  6. $row = mysql_fetch_array($sql);
  7. // Set some headers
  8. header("Pragma: public");
  9. header("Expires: 0");
  10. header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
  11. header("Content-Type: application/force-download");
  12. header("Content-Type: application/octet-stream");
  13. header("Content-Type: application/download");
  14. header("Content -Disposition: attachment; filename=".basename($row['FileName']).";");
  15. header("Content-Transfer-Encoding: binary");
  16. header("Content-Length: ".filesize ($row['FileName']));
  17. @readfile($row['FileName']);
  18. exit(0);
  19. }else{
  20. header("Location: /");
  21. exit;
  22. }
  23. ?>
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files.php

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