http://miai.sinaapp.com/api/do.php?act=weather&city=北京&key=wdkj

以下是半成品源码：要用请自己修改：
<?php

function get($url,$post='')
{
$ch=curl\_init($url);
curl\_setopt($ch, CURLOPT\_RETURNTRANSFER, true);
if(isset($post)){
curl\_setopt($ch,CURLOPT\_POST,1);
curl\_setopt($ch,CURLOPT\_POSTFIELDS,$post); }
curl\_setopt($ch,CURLOPT\_TIMEOUT,120);//超时

$content=curl\_exec($ch);
curl\_close($ch);
return $content;
}

$city=urlencode($\_GET['city']);
$f=get("http://f.10086.cn/weather/sch.do?code=".$city."&userId=-1&fr=info&tp=");
#echo htmlspecialchars($f);
preg\_match("!【今天】<br/>(.*)【!Usi",$f,$info);
#print\_r($info);
echo $today=strip\_tags(str\_replace("<br/>"," ",$info[1]));

preg\_match("!【明天】<br/>(.*)【后天】!Usi",$f,$info);
#print\_r($info);
echo $tomorrow=strip\_tags(str\_replace("<br/>"," ",$info[1]));