PHP从MySQL数据库读出数据用在微信大众号上

PHP从MySQL数据库读出数据用在微信公众号上
做微信公众平台 在php页面从数据库中读取数据，用在微信公众平台的关注自动回复上
求指教怎么做

public function handleEvent($postObj)
	{
		
		 //header('Content-type:text/html;charset=utf-8');                                 //定义输出格式编码为utf-8
   $db = new mysqli('127.0.0.1','root','123','weixin');                               //建立mysql数据库连接
   $_ROWS = $db->query('SELECT * FROM event_subscribe');                          //用sql语句获取数据
   //mysql_query("set names utf8");//设置编码utf8
   while($_ROW = $_ROWS->fetch_assoc())
        //$title= $_ROW->ess_Title;
    	//$Description= $_ROW->ess_Description;
    	//$PicUrl= $_ROW->ess_PictureUrl;
    	//$Url= $row->ess_Url;  

        $title= $_ROW['ess_Title'];
    	$Description= $_ROW['ess_Description'];
    	$PicUrl= $_ROW['ess_PictureUrl'];
    	$Url= $row['ess_Url'];  
		//$contentStr = "欢迎关注哟";  
		$fromUsername = $postObj->FromUserName;
		$toUsername = $postObj->ToUserName;
		$msgType = "news";  
		$time = time();
		$textTpl = "<xml>
 					<ToUserName><![CDATA[%s]]></ToUserName>
 					<FromUserName><![CDATA[%s]]></FromUserName>
 					<CreateTime>%s</CreateTime>
					<MsgType><![CDATA[news]]></MsgType>
 					<ArticleCount>1</ArticleCount>
 					<Articles>
 						<item>
 							<Title><![CDATA[%s]]></Title> 
 							<Description><![CDATA[%s]]></Description>
 							<PicUrl><![CDATA[%s]]></PicUrl>
 							<Url><![CDATA[%s]]></Url>
 						</item> 						
 					</Articles>
 					<FuncFlag>1</FuncFlag>
 				</xml>";
		
		$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$title,$Description,$PicUrl,$Url);
        echo $resultStr;    

------解决思路----------------------
新的代码

public function handleEvent($postObj)
    {
          
   //header('Content-type:text/html;charset=utf-8');                                 //定义输出格式编码为utf-8
   $db = new mysqli('127.0.0.1','root','123','weixin');                               //建立mysql数据库连接
   $db->query("SET NAMES utf8");//防止乱码
   $_ROWS = $db->query('SELECT * FROM event_subscribe where IsPublic=1');                          //用sql语句获取数据
   $_ROW = mysqli_fetch_assoc($_ROWS);
      $textTpl = "<xml>
                     <ToUserName><![CDATA[%s]]></ToUserName>
                     <FromUserName><![CDATA[%s]]></FromUserName>
                     <CreateTime>%s</CreateTime>
                    <MsgType><![CDATA[news]]></MsgType>
                     <ArticleCount>1</ArticleCount>
                     <Articles>
                         <item>
                             <Title><![CDATA[%s]]></Title> 
                             <Description><![CDATA[%s]]></Description>
                             <PicUrl><![CDATA[%s]]></PicUrl>
                             <Url><![CDATA[%s]]></Url>
                         </item>                        
                     </Articles>
                     <FuncFlag>1</FuncFlag>
                 </xml>";
         
        $resultStr = sprintf($textTpl, $postObj->FromUserName, $postObj->ToUserName, time(),$_ROW['ess_Title'],$_ROW['ess_Description'],$_ROW['ess_PictureUrl'],$_ROW['ess_Url']);
        
        return $resultStr;
    }