'heilongjiang','city'=>'qiqihaer','area'=>'龙江')     * 是否直辖市/省会城市：Boolean 0/1/2 普通城市/直辖市/省会城市     * 收集信息类型 type:0-单个城市(非特别城市) 1-单个区县 2-区县列表 3-市区列表 4-全国列表（只有省会城市）     * type 默认为0     * */    protected $url = 'http://flash.weather.com.cn/wmaps/xml/';    private $dom = null;    private $city_len = 0;    protected $city = null;    protected $city_arr = array('province'=>'','city'=>'','area'=>'');    protected $type = 0;    protected $special = 0;    protected $attr_arr = array();    public function __construct($city_arr,$type=0,$special=0){        $this->city_arr = $city_arr;        $this->type = $type;        $this->special = $special;        $this->get_url();        echo $this->url;        $this->dom = new DomDocument();        $this->dom->load($this->url);        $this->city = $this->dom->getElementsByTagName('city');        $this->city_len = $this->city->length;        $this->attr_arr = $this->get_all_attr();    }    // 根据给定的城市信息，特别城市信息，以及返回类型分析应该加载页面    protected function get_url(){        if (($this->special!=0 && $this->type==0) || $this->type==4)        {            // 如果是特别城市，并且获取的是单个城市            $page = 'china';        }else         {            // 如果是获取市区列表 type=3 或者是普通城市的单个城市信息            // 则进入省份页面            // 如果获取的是区县列表            $page = ($this->type == 3 || ($this->special==0 && $this->type==0) || $this->special==1 ) ? $this->city_arr['province'] : $this->city_arr['city'];        }        $this->url .= $page.'.xml';    }    // 根据pyName获取单个城市信息    // china页面和省份页面通过pyName可以获取单个城市信息    // 返回该城市在节点中的顺序 从0开始    // protected function get_list_num($attr_value,$attr_key='pyName'){    protected function get_list_num(){        $num = 0;        for ($i = 0; $i < $this->city_len; $i++)         {            $item = $this->city->item($i);            $cityname = $item->getAttribute('cityname');            $city_value = $this->type== 1 ? $cityname : $item->getAttribute('pyName');            $pyName = $this->special!=0 ? $this->city_arr['province'] : $this->city_arr['city'];            $pyName = $this->type==1 ? $this->city_arr['area'] : $pyName;            if ($pyName==$city_value || (strpos($city_value,$pyName)!==false))             {                $num = $i;                break;            }            continue;        }        return $num;    }    // 获取全部属性信息    protected function get_all_attr(){        $attr_list = $this->city->item(0)->attributes;        $attr_len = $attr_list->length;        for ($i = 0; $i < $attr_len; $i++)         {             $data[$i] = $attr_list->item($i)->nodeName;        }        return $data;    }    // 获取天气预报    public function get_weather(){        // 根据要抓取的类型判断        if ($this->type==0 || $this->type==1)         {            // 获取单个城市信息            $data = $this->get_one_city();        }else         {            $data = $this->get_city_list();        }        return $data;    }    // 获取单个城市预报信息    protected function get_one_city(){        $list_num = $this->get_list_num();        $item = $this->city->item($list_num);        $data = $this->get_node_attr($item);        return $data;    }    // 获取单个区县预报信息    protected function get_one_area(){    }    // 获取多个城市列表信息    protected function get_city_list(){        for ($i = 0; $i < $this->city_len; $i++)         {            $item = $this->city->item($i);            $data[$i] = $this->get_node_attr($item);        }        return $data;    }    // 获取节点的属性值    protected function get_node_attr($node){        $data = array();        foreach ($this->attr_arr as $value)         {            $data[$value] = $node->getAttribute($value);        }        return $data;    }}$city_arr = array('province'=>'hebei','city'=>'chengde','area'=>'承德');$type = 1;$special = 0;$w = new Weather($city_arr,$type,$special);$data = $w->get_weather();print_r($data);?>