微信开发不能返回数据的奇怪有关问题

<br />                //获取td栏的代码<br />            	$regex = "/<td  Height=\"30\">([\s\S]*?)<\/td>/";<br />                $str = file_get_contents('http://www.zh818.com/get/quanguo-jg/');<br />                $matches = array();<br />                preg_match_all($regex, $str, $matches);<br />                echo "\n";<br />                <br />            	//获得网址  <br />                $href ='/<a .*?href="(.*?)".*?>/is';<br />                $href_single = array(); <br />                if(preg_match($href, $matches[0][1], $href_single))<br />               <br />                //根据获得的网址获取表格信息     <br />                $regex = '/<table border="1" width="100%">.*([\d\.]+?).*<\/table>/sU';<br />                $str = file_get_contents($href_single[1]);<br />                $matches = array();   <br />                if(preg_match($regex, $str, $matches))<br />                $result = $this->transmitText($object, $matches);<br />