phpExcel导出xlsx格式表格

业务需求与Ai电话对接，只可以上传xlsx格式表格
醉了

/**
     * @description 用户数据导出
     * @author Angus
     */
    public function ExportMember(){
        $Data = I('get.');
        $Num = empty($Data['num'])?800:$Data['num'];
        $Time = $Data['time'];
        $Media = '4,123,131,118,133';

        $Limit = $Num+100;
        $Firm = '腾讯';
        $Comment = '暂无';
        $EndTime = '';

        $MemberList = M('Member') ->field('phone, addtime') ->where(array('addtime'=>array('gt', $Time), 'id_card'=>array('neq', ''))) ->order('addtime asc') ->limit($Limit) ->select();
        $PhoneList = array();
        foreach($MemberList as $k => $v){
            $PhoneList[$v['phone']] = $v['phone'];
            if(count($PhoneList) == $Num){
                $EndTime = $v['addtime']+1;
                break;
            }
        }

        $List = array();
        foreach($PhoneList as $v){
            $List[] = array(
                'Firm'=>'',
                'UserName'=>'',
                'UserPhone'=>$v,
                'Comment'=>'',
            );
        }

        $Header = array('企业','姓名','电话','备注');
        $Keys = array('Firm','UserName','UserPhone','Comment');
        $FileName = '数据报表(截止时间:'.date('YmdHis', $EndTime).')';
        $this ->exportExcel($Header, $List, $FileName,  './', false);
    }

    /**
     * 数据导出
     * @param array $title   标题行名称
     * @param array $data   导出数据
     * @param string $fileName 文件名
     * @param string $savePath 保存路径
     * @param $type   是否下载  false--保存   true--下载
     * @return string   返回文件全路径
     * @throws PHPExcel_Exception
     * @throws PHPExcel_Reader_Exception
     */
    function exportExcel($title=array(), $data=array(), $fileName='', $savePath='./', $isDown=false){
        vendor("PHPExcel.PHPExcel.Classes.PHPExcel");
        $obj = new \PHPExcel();

        //横向单元格标识
        $cellName = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'AA', 'AB', 'AC', 'AD', 'AE', 'AF', 'AG', 'AH', 'AI', 'AJ', 'AK', 'AL', 'AM', 'AN', 'AO', 'AP', 'AQ', 'AR', 'AS', 'AT', 'AU', 'AV', 'AW', 'AX', 'AY', 'AZ');

        $obj->getActiveSheet(0)->setTitle('sheet名称');   //设置sheet名称
        $_row = 1;   //设置纵向单元格标识
        if($title){
            $i = 0;
            foreach($title AS $v){   //设置列标题
                $obj->setActiveSheetIndex(0)->setCellValue($cellName[$i].$_row, $v);
                $i++;
            }
            $_row++;
        }

        //填写数据
        if($data){
            $i = 0;
            foreach($data AS $_v){
                $j = 0;
                foreach($_v AS $_cell){
                    $obj->getActiveSheet(0)->setCellValue($cellName[$j] . ($i+$_row), $_cell);
                    $j++;
                }
                $i++;
            }
        }

        //文件名处理
        if(!$fileName){
            $fileName = uniqid(time(),true);
        }
        $objWrite = \PHPExcel_IOFactory::createWriter($obj, 'Excel2007');

        if($isDown){   //网页下载
            header('pragma:public');
            header("Content-Disposition:attachment;filename=$fileName.xls");
            $objWrite->save('php://output');exit;
        }

        $_fileName = iconv("utf-8", "gb2312", $fileName);   //转码
        header('pragma:public');
        header("Content-Disposition:attachment;filename=$_fileName.xlsx");
        $objWrite->save('php://output');exit;

        return $savePath.$fileName.'.xlsx';
    }