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php处理文件下载的代码

程序员文章站 2022-05-01 22:15:27
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用在服务器上提供下载的php代码,可以指定被下载的文件名,可以动态指定文件内容

  1. // local file that should be send to the client
  2. $local_file = 'test.zip';
  3. // filename that the user gets as default
  4. $download_file = 'your-download-name.zip';
  5. if(file_exists($local_file) && is_file($local_file)) {
  6. // send headers
  7. header('Cache-control: private');
  8. header('Content-Type: application/octet-stream');
  9. header('Content-Length: '.filesize($local_file));
  10. header('Content-Disposition: filename='.$download_file);
  11. // flush content
  12. flush();
  13. /*
  14. ** You can also remove the following part and
  15. ** replace it trough a database command fetching
  16. ** the download data
  17. */
  18. // open file stream
  19. $file = fopen($local_file, "rb");
  20. // send the file to the browser
  21. print fread ($file, filesize($local_file));
  22. // close file stream
  23. fclose($file);}
  24. else {
  25. die('Error: The file '.$local_file.' does not exist!');
  26. }
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