這六行放在最前頭就可以在FF與IE 下載檔案了~

$FILEname = 'XXX.csv'; //設定檔名
header("Content-Type: application/octetstream; name=$FILEname");
//for IE & Opera
header("Content-Type: application/octet-stream; name=$FILEname");
//for the rest
header("Content-Disposition: attachment; filename=$FILEname;");
header("Content-Transfer-Encoding: binary");
header("Cache-Control: cache, must-revalidate");
header("Pragma: public");
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");