如何在下载前正确更改文件名？

Question

我尝试在下载前更改文件名，但文件在下载后损坏。如何修复？

  $origin_filename = 'orign_filename.exe';
  $destination_filename = 'changed_filename.exe';
  header('Content-Description: File Transfer');
  header('Content-Type: application/octet-stream');
  header('Content-Disposition: attachment; filename=' . $destination_filename);
  header('Content-Transfer-Encoding: binary');
  header('Expires: 0');
  header('Cache-Control: must-revalidate');
  header('Pragma: public');
  header('Content-Length: ' . filesize($origin_filename));
  
  readfile($origin_filename);

Answer 1

我建议你使用这个函数(取自)

$origin_filename = 'orign_filename.exe';
$destination_filename = 'changed_filename.exe';

function force_download($file){
  header('Pragma: public');
  header('Expires: 0');
  header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
  header('Cache-Control: private', false);
  header('Content-Type: application/force-download');
  header('Content-length: '.filesize($file));
  header('Content-Disposition: attachment; filename="'.basename($file).'"');
  header('Content-Transfer-Encoding: binary');
  header('Connection: close');
  readfile($file);
  exit;
}

force_download($destination_filename,$origin_filename);