获取天气预告

class weather{


protected $url='http://php.weather.sina.com.cn/xml.php';
//http://php.weather.sina.com.cn/xml.php?city=%C4%CF%B2%FD&password=DJOYnieT8234jlsK&day=0(city gb2312urlencode编码 day查询日，0为当天1为明天)
 
   //根据ip获取城市地址
protected function GetIp()
{  
   $realip = '';  
   $unknown = 'unknown';  
   if (isset($_SERVER)){  
       if(isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && strcasecmp($_SERVER['HTTP_X_FORWARDED_FOR'], $unknown)){  
           $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);  
           foreach($arr as $ip){  
               $ip = trim($ip);  
               if ($ip != 'unknown'){  
                   $realip = $ip;  
                   break;  
               }  
           }  
       }else if(isset($_SERVER['HTTP_CLIENT_IP']) && !empty($_SERVER['HTTP_CLIENT_IP']) && strcasecmp($_SERVER['HTTP_CLIENT_IP'], $unknown)){  
           $realip = $_SERVER['HTTP_CLIENT_IP'];  
       }else if(isset($_SERVER['REMOTE_ADDR']) && !empty($_SERVER['REMOTE_ADDR']) && strcasecmp($_SERVER['REMOTE_ADDR'], $unknown)){  
           $realip = $_SERVER['REMOTE_ADDR'];  
       }else{  
           $realip = $unknown;  
       }  
   }else{  
       if(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), $unknown)){  
           $realip = getenv("HTTP_X_FORWARDED_FOR");  
       }else if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), $unknown)){  
           $realip = getenv("HTTP_CLIENT_IP");  
       }else if(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), $unknown)){  
           $realip = getenv("REMOTE_ADDR");  
       }else{  
           $realip = $unknown;  
       }  
   }  
   $realip = preg_match("/[\d\.]{7,15}/", $realip, $matches) ? $matches[0] : $unknown;  
   return $realip;  
}  
  
protected function GetIpLookup($ip = '')
{  
   if(empty($ip)){  
       $ip = GetIp();  
   }  
   $res = @file_get_contents('http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=' . $ip);  
   if(empty($res)){ return false; }  
   $jsonMatches = array();  
   preg_match('#\{.+?\}#', $res, $jsonMatches);  
   if(!isset($jsonMatches[0])){ return false; }  
   $json = json_decode($jsonMatches[0], true);  
   if(isset($json['ret']) && $json['ret'] == 1){  
       $json['ip'] = $ip;  
       unset($json['ret']);  
   }else{  
       return false;  
   }  
   return $json;  
} 
//获取天气
protected function GetWeather($city,$day)
{
$citycode=urlencode(mb_convert_encoding($city,'gb2312','utf-8' ));
$url=$this->url.'?city='.$citycode.'&password=DJOYnieT8234jlsK&day='.$day;
$res = @file_get_contents($url); 
$xmlstring = simplexml_load_string($res, 'SimpleXMLElement', LIBXML_NOCDATA); 
$val = json_decode(json_encode($xmlstring),true); 
return $val; 
} 
public function OpenApiGetWeather()
{
$ip=$this->GetIp();
$address=$this->GetIpLookup($ip);
if(empty($address)){
$city='深圳';
}else{
$city=$address['city'];
}

$res=$this->GetWeather($city,0);
return $res;
}

 }
// 
$object=new weather();
$resc=$object->OpenApiGetWeather();

print_r($resc);exit;

      结果：

Array ( [Weather] => Array ( [city] => 深圳 [status1] => 阴 [status2] => 阴 [figure1] => yin [figure2] => yin [direction1] => 无持续风向 [direction2] => 无持续风向 [power1] => ≤3 [power2] => ≤3 [temperature1] => 23 [temperature2] => 18 [ssd] => 6 [tgd1] => 21 [tgd2] => 21 [zwx] => 2 [ktk] => 4 [pollution] => 3 [xcz] => 4 [zho] => Array ( )   [diy] => Array ( )   [fas] => Array ( )   [chy] => 3 [zho_shuoming] => 暂无 [diy_shuoming] => 暂无 [fas_shuoming] => 暂无 [chy_shuoming] => 单层薄衫、裤薄型棉衫、长裤、针织长袖衫、长袖T恤。薄型套装、牛仔衫裤、西服套装、薄型夹克 [pollution_l] => 轻度 [zwx_l] => 弱 [ssd_l] => 温暖舒适 [fas_l] => 暂无 [zho_l] => 暂无 [chy_l] => 单衣类 [ktk_l] => 不需要开启 [xcz_l] => 不太适宜 [diy_l] => 暂无 [pollution_s] => 对空气污染物扩散无明显影响 [zwx_s] => 紫外线弱 [ssd_s] => 天气状况良好时，多到户外活动，并可适当增加户外活动时间。 [ktk_s] => 不需要开启空调 [xcz_s] => 洗车后未来1-2天内有降水、大风或沙尘天气，不太适宜洗车 [gm] => 1 [gm_l] => 低发期 [gm_s] => 天气舒适，不易发生感冒； [yd] => 2 [yd_l] => 比较适宜 [yd_s] => 虽然天空云层较厚，比较适宜户外运动； [savedate_weather] => 2017-04-13 [savedate_life] => 2017-04-13 [savedate_zhishu] => 2017-04-13 [udatetime] => 2017-04-13 08:10:00 )   )