超简单PHP导出excel方法

header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:attachment; filename=用户信息表.xls");
require_once('./class.db.php');
$db = new DB('localhost', 'app_vmovies', 'root', '123456');
$sql = 'select * from `user` order by `id` desc';
$ret = $db->get_results($sql);
 
// 输出内容如下：  
echo "ID"."\t";
echo "昵称"."\t";
echo "性别"."\t";
echo "OpenId"."\t";
echo "平台"."\t";
echo "注册日期"."\t";
echo "\n";
 
$len = count($ret);
for ( $i = 0; $i < $len; $i++ ) {
    echo $ret[$i]["id"]."\t";
    echo $ret[$i]["nickname"]."\t";
    echo $ret[$i]["gender"]."\t";
    echo $ret[$i]["openid"]."\t";
    echo $ret[$i]["pf"]."\t";
    echo $ret[$i]["regdate"]."\t";
    echo "\n";
}