用sae开发微信公众号，链接sae里面的mysql总是没反应。

这是代码，
$mysql = new SaeMysql(); //连接到SAE数据库
$mysql->setCharset(GBK);
$sql = "SELECT title, description,picUrl,url FROM news ORDER BY ids LIMIT 0,10 ";
$data = $mysql->getData($sql);
foreach ($data as $row)
{
$itemXml .="<item>
                                     <Title><![CDATA[".$row['title']."]]></Title>
                                     <Description><![CDATA[".$row['description']."]]></Description>
                                     <PicUrl><![CDATA[".$row['picUrl']."]]></PicUrl>
                                     <Url><![CDATA[".$row['url']."]]></Url>
                                     </item>";
}
//
$replay ="<xml>
                                         <ToUserName><![CDATA[%s]]></ToUserName>
                                         <FromUserName><![CDATA[%s]]></FromUserName>
                                         <CreateTime>%s</CreateTime>
                                         <MsgType><![CDATA[news]]></MsgType>
                                         <ArticleCount>%s</ArticleCount>
                                         <Articles>".$itemXml." </Articles>
                                         <FuncFlag>1</FuncFlag>
                                        </xml>";
$RecoGnitionReply = sprintf($replay,$fromUsername,$toUsername,time());
echo $RecoGnitionReply;在index.php里面测试过，应该是能连得上的，但是公众号上没反应。