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Custom function code for php to force file download

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Release: 2016-07-25 09:12:51
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Sometimes you want to download directly when clicking the corresponding link instead of displaying it on the web page, then you need to forcefully set the header information.

Share a piece of PHP function implementation code that does not produce garbled characters to achieve forced downloading of files.

Example, PHP code to implement forced downloading of files.

  1. /**
  2. * Downloader
  3. *
  4. * @param $file
  5. * path to the file
  6. * @param $downloadfilename
  7. * (null|string) the name you want to use for the file to be downloaded.
  8. * (if you don't specify it use current file name)
  9. *
  10. * @return file stream
  11. */ bbs.it-home.org
  12. function download_file($archivo, $downloadfilename = null) {
  13. if (file_exists($archivo)) {
  14. $downloadfilename = $downloadfilename !== null ? $downloadfilename : basename($archivo);
  15. header('Content-Description: File Transfer');
  16. header('Content-Type: application/octet-stream');
  17. header ('Content-Disposition: attachment; filename=' . $downloadfilename);
  18. header('Content-Transfer-Encoding: binary');
  19. header('Expires: 0');
  20. header('Cache-Control: must- revalidate, post-check=0, pre-check=0');
  21. header('Pragma: public');
  22. header('Content-Length: ' . filesize($archivo));
  23. ob_clean();
  24. flush ();
  25. readfile($archivo);
  26. exit;
  27. }
  28. }
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