php 输出xml 文件

<?php
require_once ("Inc/Conn.php"); //系统配置文件
$sql = "select *  from ose";
$result = mysql_query($sql);
$total = mysql_num_rows($result);
if ($total) {
    $pagesize = 4;
    $pagecount = ($total % $pagesize) ? (int)($total / $pagesize) + 1 : $total / $pagesize; //统计总页面
    $page = isset($_GET['page']) ? $_GET['page'] : 1; //取得当前页面
    $start = ($page >= 1 && $page <= $pagecount) ? $start = $pagesize * ($page - 1) : $start = 1; //取得超始记录
    $sql.= "  order by id desc limit $start,$pagesize";
    $result = mysql_query($sql);
    while ($rs = mysql_fetch_array($result)) {
        $temp.= "<member id=\"".$rs['id']."\" roomname=\"".$rs['User_Name']."\"/>\n";
    }
} else {
    die('{result:"false"}');
}
//die('bb');
echo "<?xml version=\"1.0\" encoding=\"gb2312\" \n<root>\n<page now=\"$page\" count=\"$pagecount\"/>n<roomlist>\n\", $temp, \"</roomlist>n</root>";