PHP导出CVS格式文件

$csvContent="csvzero,csvone,csvtwo,csvthree,csvfour,csvfive";
header("Content-Type: application/vnd.ms-excel; charset=GB2312");
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header("Content-Disposition: attachment;filename=CSV数据.csv ");
header("Content-Transfer-Encoding: binary ");
$csvContent = iconv("utf-8","gb2312",$csvContent);
echo $csvContent;