まずは基本。 header('Content-Disposition: attachment; filename="hoge.txt"'); header('Content-Type: application/octet-stream'); header('Content-Transfer-Encoding: binary'); header('Content-Length: '.strlen($buf)); print $buf; ファイルになってるやつをダウンロード。 header('Content-Disposition: attachment; filename="'.basename($filepath).'"'); header('Content-Type: application/octet-stream'); header('Content-Transfer-Encodin
