拼成xml格式文件的php代码如下，也就是testkk.php的内容：
<?
$conn = mysql_connect('localhost', 'admin', 'admin');
$db_list = mysql_list_dbs($conn);
mysql_select_db('db_dawei');
$exec="SELECT `subject` , `url` FROM `phpup_groups` WHERE `ispassed` =1";
mysql_query("set names 'gb2312'");
$result=mysql_query($exec);
$xmlcode = '<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
<channel>
<title>14街信息订阅</title>
<link>www.14.com</link>
<description>描述</description>';
while ($arr = mysql_fetch_array($result)){
$title = iconv("GB2312","UTF-8",$arr["subject"]);
$link = iconv("GB2312","UTF-8",$arr["url"]);
$xmlcode .= "<item><title>".$title."</title><link>".$link."</link><description><![CDATA[]]></description></item>";
}
mysql_close($conn);
$xmlcode .= "</channel></rss>";
echo $xmlcode;
?>
testkk.php执行后生成的页面在页面中显示为如下，完全不是rss的展现样式，而且标题也没有显示，只显示了url：
www.14.com 描述http://www.gelu.com/r.php?r=21522http://www.kumeila.com/r.php?r=3025http://www.55tuan.com/c-1-inviteMjYwNjYyhttp://www.99kgo.com/tuan/r.php?r=536http://www.meituan.com/r/i1022826http://tuan.pclady.com.cn/invite/i39649http://www.24quan.com/r.php?r=602333http://www.lashou.com/?inviter=1415047http://www.zhaozhe.com/share/Beijing/i62392/bdlhx.htmlhttp://life.sina.com.cn/tuan/r/NPY0K7jnN6R8gLB6ZPiysOwY_k8
http://www.manzuo.com/i/573508.htmhttp://www.groupon.cn/user/reg/?rid=745704http://tuangou.ynet.com/index.php?m=Goods&a=show&id=172&ru=6948http://t.wutoo.cn/r.php?r=26964http://www.dazhongtg.com/r.php?r=20277http://www.aihego.com/r.php?r=1751http://www.36tuan.com/r.jsp?r=85042http://www.chenzhituan.com/r.php?r=2990http://www.dytuan.com/r.php?r=14842
http://www.ftuan.com/r.php?r=355675http://www.shifentuan.com/r.php?r=2181http://www.juqi.com/?invite=true&cid=138&inviter=3D4C1FBA5037F89Dhttp://www.tuanku.com/referral/7777ebcehttp://t.dianping.com/i/2571609/c/1http://www.juhuitg.com/index.php?m=Goods&a=show&cityname=beijing&id=128&ru=308http://www.915dz.com/r.php?r=20http://www.hulutuan.com/r.php?r=30933
http://www.misstuan.com/r.php?r=39808http://www.tuan001.com/index.php?m=Goods&a=show&id=769&ru=67750http://www.nuomi.com/i/10F1nZn4Ghttp://www.aituanbutuan.com/r.php?r=1040
http://tuan.aibang.com/t/1525605http://t.58.com/invite/bj/ecineepahttp://www.whattuan.com/r.php?r=7221http://www.361.cn/r.php?r=38728http://tuan.fantong.com/invites/3136390http://tuan.sohu.com/beijing/life/invite/201172http://www.didatuan.com/r.php?r=NDgxODUz
右键打开源文件显示的却是完整的xml格式，问什么不能订阅呢？问题出在哪里了？
<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
<channel>
<title>14街信息订阅</title>
<link>www.14.com</link>
<description>描述</description><item><title>仅仅需29元！the face shop植物清透绿色隔离霜（绿隔）！TFS家的明星产品，彩妆首选第一步，质地清透，增白提亮，更能保护肌肤不受任何外界刺激！一单购买两件包邮！</title><link>http://www.gelu.com/r.php?r=21522</link><description><![CDATA[]]></description></item>
<item><title>79元抢购全新牛气产品BOBBI BROWN 波比布朗限量玩颜彩妆金妆版套装，眼线胶、唇彩、眼影、璀璨晶铜软皮拉链金色刷包，任何时间任何场合都让你得心应手，绝对具有诱惑力，想不败都不行的套装，两件起全</title><link>http://www.kumeila.com/r.php?r=3025</link><description><![CDATA[]]></description></item>
<item><title>仅96元，尊享原价1560的东南甲美容美发中心洗剪吹烫护造型套餐，欧莱雅冷烫或热烫+洗剪吹+欧莱雅护理+头皮护理+造型，拒绝干枯，靓出自己</title><link>http://www.55tuan.com/c-1-inviteMjYwNjYy</link><description><![CDATA[]]></description></item>
<item><title>59.9元抢购正宗密云农合社纯天然山地果树柴鸡蛋！原价108元！每盒40枚！蛋黄橙黄个大，蛋清清澈粘稠，营养丰富，味道纯正！新都市一族无公害健康食品首选！</title><link>http://www.99kgo.com/tuan/r.php?r=536</link><description><![CDATA[]]></description></item>
<item><title>仅售189元！原价564元的便宜坊豪华四人套餐（1416烤鸭+香辣锅巴虾+菜片巧手鸭崧+蟹粉烧豆腐+鹅肝酱皇粉丝+榨菜鸭胗+卤水双拼+秘制白菜+豆腐鸭汤+菌菇鸭四宝+便宜坊酥饼+奶茶+丝苗白饭），中华</title><link>http://www.meituan.com/r/i1022826</link><description><![CDATA[]]></description></item>
<item><title>【中国大陆地区包邮】110元抢购原价498元的365sleep适宜优品温感舒睡记忆枕(L)，采用感温记忆慢回弹海绵，独特的弧线设计依人体工学原理专业打造，让您获得完美、舒适的睡眠，精神一整天。限量60</title><link>http://tuan.pclady.com.cn/invite/i39649</link><description><![CDATA[]]></description></item>
<item><title>75元抢购！Max Factor蜜丝佛陀透滑粉饼（自然色）SPF15，透薄易推，质地轻盈，令肌肤散发透亮光泽，呈现自然光影效果！一单购买2个包邮！</title><link>http://www.aituanbutuan.com/r.php?r=1040</link><description><![CDATA[]]></description></item>
<item><title>过“足”瘾！仅需45元，原价168元千子莲崇文门店超值芳香足疗套餐，背部梳理+腿部放松+足部按摩+台球1小时+搓盐+茶水+任选芳香药包。华夏悠久浴足文化，典籍古方保健圣地！</title><link>http://tuan.aibang.com/t/1525605</link><description><![CDATA[]]></description>
</item>
</channel></rss>
