数据库

数据库下载地址：https://files.cnblogs.com/files/fan-bk/packet_region.zip

php

     where(['parent_id' => $id])->select();            $opt = '--请选择--';            foreach($region as $key=>$val){                $opt .= "{$val['name']}";            }            echo json_encode($opt);            die;        }        $region = Db::name('packet_region')->where(['level_type' => 1])->select();        $this->assign('region', $region);		return $this->fetch();	}    public function hello($name = 'ThinkPHP5')    {        return 'hello,' . $name;    }		}

html

    
         
     	    --请选择--    {foreach $region as $vo}        {$vo.name}    {/foreach}
         --请选择省--
         --请选择市--

参考：http://www.thinkphp.cn/topic/41905.html