<?php  
//获取天气 
   $url = 'http://m.weather.com.cn/data/';  
   $id = '101181101'; //焦作的代号 
   $data = file_get_contents($url . $id .'.html');  
 
 $obj=json_decode($data); 
 echo $obj->weatherinfo->city.'：'.$obj->weatherinfo->weather1.' '.$obj->weatherinfo->temp1;