public function createewm(){
     if(IS_POST){
       $access_token=checkAccessToken($this->token); //获取access_token
       $json_url='https://api.weixin.qq.com/cgi-bin/qrcode/create"expire_seconds": 1800, "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": '.$i.'}}}';
        }
         
         if($action_name=='QR_LIMIT_SCENE'){
          //永久 post的json数据
           $curl_data='{"action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": '.$i.'}}}';
         } 
         $json_info=json_decode($this->api_notice_increment($json_url,$curl_data),true); 
 
         //这里代表生成成功，记录数据以便插入到数据库，方便以后统计查找
         if($json_info['errcode']!=40013){ 
           $data[$n]['token']=$this->token;
           $data[$n]['tiket']=$json_info['ticket'];
           $data[$n]['url']=$json_info['url'];
           $data[$n]['scene_id']=$i;
           $data[$n]['expire_seconds']=$json_info['expire_seconds'];
           $data[$n]['action_name']=$action_name;
           $data[$n]['remark']='';
           $data[$n]['createtime']=time();
           $n++;
         }else{
           $this->error('操作失败');
         }
       }
      if(count($data)>0){
         $res= M('erweima')->addAll($data);//插入数据
         if($res){
          $this->success('添加成功');
         }else{
          $this->error('操作失败');
         }
       }else{
         $this->error('操作失败');
       } 
     } 
  }

function api_notice_increment($url, $data){
    $ch = curl_init();
    $header = "Accept-Charset: utf-8";
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $tmpInfo = curl_exec($ch);
    if (curl_errno($ch)) {
      //curl_close( $ch )
      return $ch;
    }else{
      //curl_close( $ch ) 
      return $tmpInfo;
    }
    curl_close( $ch ) ;
  }