thinkphp를 사용하여 보고서를 생성하는 방법

use PHPExcel_IOFactory;
use PHPExcel;

class ReportController extends Controller
{
    public function index()
    {
        $model = new OrderModel();
        $data = $model->select();
        $objPHPExcel = new PHPExcel();
        $objPHPExcel->setActiveSheetIndex(0);
        $objPHPExcel->getActiveSheet()->setCellValue('A1', '订单号');
        $objPHPExcel->getActiveSheet()->setCellValue('B1', '商品名称');
        $objPHPExcel->getActiveSheet()->setCellValue('C1', '商品单价');
        $objPHPExcel->getActiveSheet()->setCellValue('D1', '商品数量');
        $objPHPExcel->getActiveSheet()->setCellValue('E1', '订单总金额');

        $num = 2;
        $total = 0;
        foreach ($data as $value) {
            $objPHPExcel->getActiveSheet()->setCellValue('A' . $num, $value['order_sn']);
            $objPHPExcel->getActiveSheet()->setCellValue('B' . $num, $value['goods_name']);
            $objPHPExcel->getActiveSheet()->setCellValue('C' . $num, $value['goods_price']);
            $objPHPExcel->getActiveSheet()->setCellValue('D' . $num, $value['goods_num']);
            $objPHPExcel->getActiveSheet()->setCellValue('E' . $num, $value['total_amount']);
            $total += $value['total_amount'];
            $num++;
        }
        $num--;

        $objPHPExcel->getActiveSheet()->setCellValue('A' . ($num + 2), '总计');
        $objPHPExcel->getActiveSheet()->setCellValue('E' . ($num + 2), $total);

        $filename = '订单列表-' . date('YmdHis', time()) . '.xls';
        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename="' . $filename . '"');
        header('Cache-Control: max-age=0');
        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
        $objWriter->save('php://output');
        exit;
    }
}