php调用yahoo sina api天气预报的实现代码

header ( 'Content-Type: text/html; charset = utf-8' );
class weather {
    static $url = 'http://xml.weather.yahoo.com/forecastrss?u=c&w=';
    static $city = 'Beijing'; //默认城市北京 这里要注意的是 city 要填拼音 我试过用中文有好几个地区都调用不到
    static $weatherXML = '';
        static $woeid_file   =   "woeid";
    static $file_path   =   "data/";

    /**
      * 获得远程xml并缓存到本地
      */
    static public function getXML($city = null) {

      if ($city != null){
            self::$city = $city;
      }
      self::$weatherXML =  self::$file_path .   md5(self::$city) . '-weather.xml';
      if (file_exists( self::$weatherXML )) {
           $fileTime = filemtime ( self::$weatherXML );
           $stater = time () - $fileTime - 60 * 60 * 2;
       if ($stater > 0) {
           return true;
       }
      }
          //获取woeid
          $woeid    =   self::getWOEID();
          self::$url    = self::$url . $woeid[0];
          //获取当天 天气
          $XML  = self::vget(self::$url);
          //保存当天 天气到文件
          self::cacheXML($XML);

          self::analysisXML($XML);
    }

        static public function analysisXML($simple) {

                $p = xml_parser_create();

                xml_parse_into_struct($p, $simple, $vals, $index);

                xml_parser_free($p);

                //本周天气
                $weekindex  =   $index['YWEATHER:FORECAST'];
                $week       =   array();
                foreach($weekindex as $k=>$v){
                    $week[$k]   =  $vals[$v]['attributes'];
                }
                unset($index);
                unset($vals);
                print_r($week);
               /*

                * day 星期
                * date 日期
                * low 最低温度
                * high 最高温度
                * test 天气状态
                * code 天气图标
                */
        }
        /*
         * 取得地区WOEID码
         */
        static private function getWOEID(){
            static $woeid  =   array();

            if(isset($woeid[self::$city])){
                return $woeid[self::$city];
            }

            if (file_exists( self::$file_path . self::$woeid_file )) {
                $woeidSTR =    file_get_contents(self::$file_path . self::$woeid_file);
                $woeid  =   json_decode($woeidSTR , true);
                if(isset($woeid[self::$city])){
                    return $woeid[self::$city];
                }
            }
            $geoPlaces    =   "http://query.yahooapis.com/v1/public/yql?q=select%20woeid%20from%20geo.places%20where%20text='".self::$city."%20CH'";

            $XML    =   simplexml_load_file( $geoPlaces );

            if(isset($XML->results->place[0])){
                $rs = $woeid[self::$city] =   $XML->results->place[0]->woeid;
                //保存到文件
                $woeidSTR   =  json_encode($woeid);
                file_put_contents(self::$file_path . self::$woeid_file, $woeidSTR);
                return $rs;
            }else{
                //如果找不到城市 woeid 默认城市就改为 北京
                self::$city =    "Beijing";

                return self::getWOEID();
            }
        }
    /**
      * 创建xml缓存
      * @param $contents 要缓存的内容
      */
    static private function cacheXML($contents) {
        $contents = str_ireplace ( '', " \n", $contents );
        $contents = mb_convert_encoding ( $contents, 'utf-8', 'gbk' );
        file_put_contents ( self::$weatherXML, $contents ) or die ( '没有写权限' );
    }
        /**
         * 模拟获取内容函数
         * @param type $url
         * @return type
         */

        static private function vget($url) {
           $user_agent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.1.4322)";
            $curl = curl_init (); // 启动一个CURL会话
            curl_setopt ( $curl, CURLOPT_URL, $url ); // 要访问的地址
            curl_setopt ( $curl, CURLOPT_SSL_VERIFYPEER, 0 ); // 对认证证书来源的检查
            curl_setopt ( $curl, CURLOPT_SSL_VERIFYHOST, 1 ); // 从证书中检查SSL加密算法是否存在
            curl_setopt ( $curl, CURLOPT_USERAGENT, $user_agent ); // 模拟用户使用的浏览器
            @curl_setopt ( $curl, CURLOPT_FOLLOWLOCATION, 1 ); // 使用自动跳转
            curl_setopt ( $curl, CURLOPT_AUTOREFERER, 1 ); // 自动设置Referer
            curl_setopt ( $curl, CURLOPT_HTTPGET, 1 ); // 发送一个常规的Post请求
            curl_setopt ( $curl, CURLOPT_TIMEOUT, 120 ); // 设置超时限制防止死循环
            curl_setopt ( $curl, CURLOPT_HEADER, 0 ); // 显示返回的Header区域内容
            curl_setopt ( $curl, CURLOPT_RETURNTRANSFER, 1 ); // 获取的信息以文件流的形式返回
            $tmpInfo = curl_exec ( $curl ); // 执行操作
            if (curl_errno ( $curl )) {
                curl_close ( $curl ); // 关闭CURL会话
                die('Errno' . curl_error ( $curl )) ;
            }
            curl_close ( $curl ); // 关闭CURL会话
            return $tmpInfo; // 返回数据
        }
}
weather::getXML("Changsha");

2，新浪天气 地址：http://php.weather.sina.com.cn 代码：

header ( 'Content-Type: text/html; charset = utf-8' );

class weather {
    static $url = 'http://php.weather.sina.com.cn/xml.php?password=DJOYnieT8234jlsK&day=0&city=';//password是固定值
    static $city = '%B1%B1%BE%A9'; //默认城市北京
    static $weatherXML = '';
    static $file_path   =   "data/";
    /**
      * 获得远程xml并缓存到本地
      */
    static public function getXML($city = null) {

      if ($city != null){
            $city = mb_convert_encoding ( $city, 'gbk', 'utf-8' );
            self::$city = urlencode($city);
      }
      self::$weatherXML =  self::$file_path .   md5(self::$city) . '-weather.xml';

      if (file_exists( self::$weatherXML )) {
           $fileTime = filemtime ( self::$weatherXML );
           $stater = time () - $fileTime - 60 * 60 * 2;
       if ($stater > 0) {
           return true;
       }
      }

          $contents =   self::vget( self::$url . self::$city );

      self::cacheXML ( $contents );

          self::analysisXML();

    }
    /**
      * 解析xml
      */
    static public function analysisXML() {

                $XML    =   simplexml_load_file(self::$weatherXML );
                print_r($XML);
    }

    /**
      * 创建xml缓存
      * @param $contents 要缓存的内容
      */
    static private function cacheXML($contents) {
        $contents = str_ireplace ( '', " \n", $contents );
        file_put_contents ( self::$weatherXML, $contents ) or die ( '没有写权限' );
    }
        /**
         * 模拟获取内容函数
         * @param type $url
         * @return type
         */

        static private function vget($url) {
            $user_agent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.1.4322)";
            $curl = curl_init (); // 启动一个CURL会话
            curl_setopt ( $curl, CURLOPT_URL, $url ); // 要访问的地址
            curl_setopt ( $curl, CURLOPT_SSL_VERIFYPEER, 0 ); // 对认证证书来源的检查
            curl_setopt ( $curl, CURLOPT_SSL_VERIFYHOST, 1 ); // 从证书中检查SSL加密算法是否存在
            curl_setopt ( $curl, CURLOPT_USERAGENT, $user_agent ); // 模拟用户使用的浏览器
            @curl_setopt ( $curl, CURLOPT_FOLLOWLOCATION, 1 ); // 使用自动跳转
            curl_setopt ( $curl, CURLOPT_AUTOREFERER, 1 ); // 自动设置Referer
            curl_setopt ( $curl, CURLOPT_HTTPGET, 1 ); // 发送一个常规的Post请求
            curl_setopt ( $curl, CURLOPT_TIMEOUT, 120 ); // 设置超时限制防止死循环
            curl_setopt ( $curl, CURLOPT_HEADER, 0 ); // 显示返回的Header区域内容
            curl_setopt ( $curl, CURLOPT_RETURNTRANSFER, 1 ); // 获取的信息以文件流的形式返回
            $tmpInfo = curl_exec ( $curl ); // 执行操作
            if (curl_errno ( $curl )) {
                curl_close ( $curl ); // 关闭CURL会话
                die('Errno' . curl_error ( $curl )) ;
            }
            curl_close ( $curl ); // 关闭CURL会话
            return $tmpInfo; // 返回数据
        }
}
weather::getXML();