1.mysql資料檔案匯入，該檔案會上傳到我的資源庫  dh_areas

      2.HTML

   <select  id="province" name="province" onchange="selcity(this.value,this.id)">
      <option value="">請選擇</option>
          <volist name="province" id="vo" >
      <option  value="{$vo.area_id}">{$vo.area_name}</option>
          </volist>
   </select>
   <select  id="city" name="city" onchange="selcity(this.value,this.id)">
      <option value="">請選擇</option>
   </select>
   <select  id="country" name="country">
      <option value="">請選擇</option>
   </select>
 

var selcityUrl="__APP__/Home/RegisterInfo/getArea";
			function selcity(areaId,obgId){
				$.ajax({
					type:"post",
					url:selcityUrl,
					async:false,
					data:{
						"areaId":areaId
					},
					success:function(json){
						var json = eval('(' + json + ')');
						
						if(obgId=="province"){
							$("#city").empty();
						var optionObg="<option value=''>請選擇</option>";
						for (var i=0;i<json.count;i++) {
							optionObg+="<option value='"+json[i].area_id+"'>"+json[i].area_name+"</option>";
						}
						$("#city").append(optionObg);
						}else{
							$("#country").empty();
						var optionObg="<option value=''>請選擇</option>";
						for (var i=0;i<json.count;i++) {
							optionObg+="<option value='"+json[i].area_id+"'>"+json[i].area_name+"</option>";
						}
						$("#country").append(optionObg);
						}
						
					}
				});
			}
 

   (1)獲取省列表

  public function register(){
     	  //獲取省級地區
        $province=M('areas')->where(array('parent_id'=>1))->select();
        $this->assign('province',$province);
     	$this->display();
     }

public function getArea(){
        $where['parent_id']=I('areaId');
        $area=D('areas')->where($where)->select();
		$area['count']=count($area);
        $this->ajaxReturn($area,'json');
    }