php数据几行代码导出到excel（非插件）

<?phpheader("Content-type:application/vnd.ms-excel");header("Content-Disposition:attachment;filename=打钱记录.xls"); ??header("Content-Transfer-Encoding:binary"); echo iconv("UTF-8", "GBK", "申请时间"); echo "\t";echo iconv("UTF-8", "GBK", "支付时间") ;echo "\t"; ?foreach($list as $key => $val) { ????echo "\r\n"; ???echo iconv("UTF-8", "GBK", "".date("Y-m-d H:i:s", $val[‘add_time‘])); echo "\t"; ???echo iconv("UTF-8", "GBK", "".date("Y-m-d H:i:s", $val[‘pay_time‘])); echo "\t";}