小编hel*_*rco的帖子

我想要一个PHP脚本来下载任何类型的文件而无需打开它.我发现了以下功能,在我看来有点不同,但我不知道哪个更好.请让我知道哪一个更好,更可靠:

1. 从PHP手册

   $file = 'monkey.gif';
   
   if (file_exists($file)) {
     header('Content-Description: File Transfer');
     header('Content-Type: application/octet-stream');
     header('Content-Disposition: attachment; filename='.basename($file));
     header('Content-Transfer-Encoding: binary');
     header('Expires: 0');
     header('Cache-Control: must-revalidate');
     header('Pragma: public');
     header('Content-Length: ' . filesize($file));
     ob_clean();
     flush();
     readfile($file);
     exit;
   }
   

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2. 从其他教程:

   header("Pragma: public");
   header("Expires: 0");
   header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
   header("Cache-Control: public");
   header("Content-Description: File Transfer");
   header("Content-Disposition: attachment; filename=\"{$file->filename}\"");
   header("Content-Transfer-Encoding: binary");
   header("Content-Length: " . $filesize);
   
   // download
   // @readfile($file_path);
   $dwn_file = @fopen($file_path,"rb");
   if ($dwn_file) {
     while(!feof($dwn_file)) {
       print(fread($dwn_file, 1024*8));
       flush();
       if (connection_status()!=0) {
         @fclose($dwn_file);
         die();
       }
     }
     @fclose($dwn_file); …

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