$filename = "member_list_" . date("Ymd") . ".xlsx"; // HTTP 헤더 설정 header("Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; charset=UTF-8"); header("Content-Disposition: attachment; filename=" . $filename); header("Content-Description: File Transfer"); header('Cache-Control: max-age=0'); // 엑셀 내용 생성 echo ''; e..