获取IP有两种方法，复杂的被我注释掉了，如果你想使用复杂的，去掉注释，再把简单的注释掉就可以了。
$city = getIPLoc_sina("$SA_IP");</p>
<p>$citycode = mb_convert_encoding($city, "gb2312", "utf-8");</p>
<p>$doc = new DOMDocument();
if (<a href="mailto:!@$doc->load("http://php.weather.sina.com.cn/xml.php?city">!@$doc->load("http://php.weather.sina.com.cn/xml.php?city</a>=" . $citycode . "&password=DJOYnieT8234jlsK&day=0")) {
echo "Get data failed!!\n";
return;
}</p>
<p>$city = $doc->getElementsByTagName("city")->item(0)->nodeValue;
$stat1 = $doc->getElementsByTagName("status1")->item(0)->nodeValue;
$chy_shuoming = $doc->getElementsByTagName("chy_shuoming")->item(0)->nodeValue;
$tmp1 = $doc->getElementsByTagName("temperature1")->item(0)->nodeValue;
$tmp2 = $doc->getElementsByTagName("temperature2")->item(0)->nodeValue;
$date = $doc->getElementsByTagName("savedate_weather")->item(0)->nodeValue;
$pollution_l = $doc->getElementsByTagName("pollution_l")->item(0)->nodeValue;
$gm_s = $doc->getElementsByTagName("gm_s")->item(0)->nodeValue;</p>
<p>echo '<aside><div><div>' .$city .' / '.$date.'</div><div><span>'. $tmp1 .'~'. $tmp2 .'<sup>℃</sup></span><span>'.$stat1 .'</span>
<span><p>空气质量：'.$pollution_l .'</p><p>穿衣建议：'. $chy_shuoming .'</p></span></div></div></div></aside>';
?>
</div>
CSS样式
[code]
.sina-weather-content{border:1px solid #D14836;font-size:12px;line-height:14px;position:relative}
.sina-weather-city{background:#D14836;color:#FFFFFF;font-size:14px;font-weight:600;left:-1px;padding:5px 15px;position:absolute;top:5px;z-index:2;display:inline}
.sina-weather-body{overflow:hidden;padding:45px 15px 15px}
.sina-weather-body p{margin-bottom:10px}
.sina-weather-tem{color:#000000;font-size:36px;font-weight:700;line-height:36px;padding-top:10px}
.sina-weather-text{color:#666666;display:block;margin-top:10px}
.stat-w{color:#555555;font-family:Microsoft Yahei;font-size:18px;font-style:italic;font-weight:600;line-height:10px}
.entry-meta{position:relative;font-size:12px;font-size:12px;margin-top:-15px;padding:10px 0;text-transform:uppercase}
.entry-meta a{color:#666}
[/code