PHP 實現下載文件的方法

  ('Content-Description: File Transfer' ('Content-Type: application/octet-stream' ('Content-Disposition: attachment; filename='.( ('Content-Transfer-Encoding: binary' (' header('Cache-Control: must-revalidate, post-check=0, pre-check=0 ('Pragma: public' ('Content-Length: ' . ( ( 
   = ( ('Content-type: application/x-'.['extension' ('Content-Disposition: attachment; filename='.['basename' ('Content-Length: '.( ( ();