// 導出exl
  public function look_down(){
    $id = I('get.id');
    $m = M ('offer_goods');
    $where['offer_id'] = $id;
    $data = $m->field('goods_id,goods_sn,goods_name,barcode,goods_type,price')->select();
     
    // 導出Exl
    import("Org.Util.PHPExcel");
    import("Org.Util.PHPExcel.Worksheet.Drawing");
    import("Org.Util.PHPExcel.Writer.Excel2007");
    $objPHPExcel = new \PHPExcel();
     
    $objWriter = new \PHPExcel_Writer_Excel2007($objPHPExcel);
   
    $objActSheet = $objPHPExcel->getActiveSheet();
     
    // 水平居中(位置很重要,建議在最初始位置)
    $objPHPExcel->setActiveSheetIndex(0)->getStyle('A')->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
    $objPHPExcel->setActiveSheetIndex(0)->getStyle('B1')->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
    $objPHPExcel->setActiveSheetIndex(0)->getStyle('C')->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
    $objPHPExcel->setActiveSheetIndex(0)->getStyle('D')->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
    $objPHPExcel->setActiveSheetIndex(0)->getStyle('E')->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
    $objPHPExcel->setActiveSheetIndex(0)->getStyle('F')->getAlignment()->setHorizontal(\PHPExcel_Style_Alignment::HORIZONTAL_CENTER);
     
    $objActSheet->setCellValue('A1', '商品貨號');
    $objActSheet->setCellValue('B1', '商品名稱');
    $objActSheet->setCellValue('C1', '商品圖');
    $objActSheet->setCellValue('D1', '商品條碼');
    $objActSheet->setCellValue('E1', '商品屬性');
    $objActSheet->setCellValue('F1', '報價(港幣)');
    // 設置個表格寬度
    $objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(16);
    $objPHPExcel->getActiveSheet()->getColumnDimension('B')->setWidth(80);
    $objPHPExcel->getActiveSheet()->getColumnDimension('C')->setWidth(15);
    $objPHPExcel->getActiveSheet()->getColumnDimension('D')->setWidth(20);
    $objPHPExcel->getActiveSheet()->getColumnDimension('E')->setWidth(12);
    $objPHPExcel->getActiveSheet()->getColumnDimension('F')->setWidth(12);
     
    // 垂直居中
    $objPHPExcel->getActiveSheet()->getStyle('A')->getAlignment()->setVertical(\PHPExcel_Style_Alignment::VERTICAL_CENTER);
    $objPHPExcel->getActiveSheet()->getStyle('B')->getAlignment()->setVertical(\PHPExcel_Style_Alignment::VERTICAL_CENTER);
    $objPHPExcel->getActiveSheet()->getStyle('D')->getAlignment()->setVertical(\PHPExcel_Style_Alignment::VERTICAL_CENTER);
    $objPHPExcel->getActiveSheet()->getStyle('E')->getAlignment()->setVertical(\PHPExcel_Style_Alignment::VERTICAL_CENTER);
    $objPHPExcel->getActiveSheet()->getStyle('F')->getAlignment()->setVertical(\PHPExcel_Style_Alignment::VERTICAL_CENTER);
     
    foreach($data as $k=>$v){
      $k +=2;
      $objActSheet->setCellValue('A'.$k, $v['goods_sn']);  
      $objActSheet->setCellValue('B'.$k, $v['goods_name']);  
         
       
      $img = M('goods')->where('goods_id = '.$v['goods_id'])->field('goods_thumb')->find();
      // 圖片生成
      $objDrawing[$k] = new \PHPExcel_Worksheet_Drawing();
      $objDrawing[$k]->setPath('./Upload/'.$img['goods_thumb']);
      // 設置寬度高度
      $objDrawing[$k]->setHeight(80);//照片高度
      $objDrawing[$k]->setWidth(80); //照片寬度
      /*設置圖片要插入的單元格*/
      $objDrawing[$k]->setCoordinates('C'.$k);
      // 圖片偏移距離
      $objDrawing[$k]->setOffsetX(12);
      $objDrawing[$k]->setOffsetY(12);
      $objDrawing[$k]->setWorksheet($objPHPExcel->getActiveSheet());
       
      // 表格內容
      $objActSheet->setCellValue('D'.$k, $v['barcode']);  
      $objActSheet->setCellValue('E'.$k, $v['goods_type']);  
      $objActSheet->setCellValue('F'.$k, $v['price']);
         
      // 表格高度
      $objActSheet->getRowDimension($k)->setRowHeight(80);
       
    }
     
    $fileName = '報價表';
    $date = date("Y-m-d",time());
    $fileName .= "_{$date}.xls";
    $fileName = iconv("utf-8", "gb2312", $fileName);
    //重命名表
    // $objPHPExcel->getActiveSheet()->setTitle('test');
    //設置活動單指數到第一個表,所以Excel打開這是第一個表
    $objPHPExcel->setActiveSheetIndex(0);
    header('Content-Type: application/vnd.ms-excel');
    header("Content-Disposition: attachment;filename=\"$fileName\"");
    header('Cache-Control: max-age=0');
    $objWriter = \PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
    $objWriter->save('php://output'); //文件通過瀏覽器下載
    // END  
  }