excel.csv文件导出

$sql = 'select * from  ' . tablename('zy_name'). ' ORDER BY `addtime` DESC ';
$list = pdo_fetchall($sql);
$tableheader = array('姓名', '手机', '身份证', '是否审核通过', '房号', '报名时间');
$html = "\xEF\xBB\xBF";
foreach ($tableheader as $value) {
   $html .= $value . "\t ,";
}
$html .= "\n";
foreach ($list as $value) {
   $html .= $value['name'] . "\t ,";
   $html .= $value['staus'] . "\t ,";
   $html .= $value['tel'] . "\t ,";
   $html .= $value['jifen'] . "\t ,";
   $html .= $value['home'] . "\t ,";
   $html .= date('Y-m-d H:i:s', $value['addtime']) . "\n";
}
$filename = "报名数据".date('Y-m-d',time());
header("Content-type:text/csv");
header("Content-Disposition:attachment; filename={$filename}.csv");
echo $html;
exit();