php生成excel文件

<?php
require_once(dirname(FILE).'/inc/config.inc.php');
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=volunteer.xls");
echo "ID\t";
echo "姓名\t";
echo "性別\t";
echo "志願者服務時長\t";
echo "發佈時間\t\n";
$dopage->GetPage("SELECT * FROM #@__msg");
while($row = $dosql->GetArray())
{
echo $row['id']."\t";
echo $row['name']."\t";
echo $row['sex']."\t";
echo $row['fw']."\t";
echo $row['posttime']."\t\n";
}
?>