thinkphp 导出电子表格【动态表头+动态数据】

在项目中，把数据导出到Excel，有时会表头信息是动态的，数据是动态的，在之前发布过一篇文章是，固定头部，动态数据的导出数据表格的文章。

今天做一个，表头是动态的，数据是动态的导出数据表格，在项目中会更加的实用

要注意单元格下标这块，处理不好，会出现 Invalid cell coordinate(无效单元格坐标)的错误

代码如下：

/**
 * thinkphp 动态表头,动态数据批量导出excel
 * 
 * @return [type] [description]
 */
    public function importexcel(){

        vendor("PHPExcel.PHPExcel");  
        $objPHPExcel = new \PHPExcel();
        $objWriter = new \PHPExcel_Writer_Excel5($objPHPExcel);
   

        //设置sheet名称
        $sheets=$objPHPExcel->getActiveSheet()->setTitle('信息统计表');

        //表头
        $category  = Db('category')->field('id,category_name')->where('status',1)->order('sort_order asc,id desc')->select();

        //添加第一列的名称，因为数据中没有这一项
        $first_row_name[] = "部门";
        foreach ($category as $key => $value) {
            //获取动态表头列，仅仅包含category_name
            $first_row_name[] = $value['category_name'];
        }
       

        $ordA = ord('A'); //65
        $key2 = ord("@"); //64
        $objPHPExcel->setActiveSheetIndex(0); //表示使用的是第一个sheet
        foreach ($first_row_name as $key => $val)
        {
            if($ordA > ord("Z"))
            {
                $colum = chr(ord("A")).chr(++$key2);//超过26个字母 AA1,AB1,AC1,AD1...BA1,BB1...
            }
            else
            {
                $colum = chr($ordA++);
            }
            //设置表格的第一行列名
            $objPHPExcel->getActiveSheet()->SetCellValue($colum.'1', $val);
        }
        

        //获取数据
        $list = Db('admin')->field('id,username,department')->where('status',1)->select();
        foreach ($list as $key => $value) {
            $list[$key]['category']  = Db('category')->field('id,category_name')->where('status',1)->order('sort_order asc,id desc')->select();
            foreach ($list[$key]['category'] as $kk => $vv) {
                $cc = Db('article')->where('status',1)->where('uid',$value['id'])->where('cid',$vv['id'])->where($where)->count();
                $list[$key]['category'][$kk]['count'] = $cc?$cc:0;

           }
        }
       
        
        $index_row = 2; //从第二行开始插入数据
        $ii = 0;
        // foreach ($excel_data as $kk => $rows)
        foreach ($list as $kk => $rows)
        {
            
            
            $rowinfo = [];
            $rowinfo[] = $rows['department'];
            $rowinfodatacount = count($rows['category']);
            foreach ($rows['category'] as $ky => $value) {
               $rowinfo[]['count'.$ky] = $value['count'];
            }
   

            $ordA = ord('A');//重新从A开始
            $key2 = ord("@"); //64
            // foreach($rows as $key => $val)
            foreach(arrToOne($rowinfo) as $key => $val)
            {
                if($ordA > ord("Z"))
                {
                    $colum = chr(ord("A")).chr(++$key2);//超过26个字母 AA1,AB1,AC1,AD1...BA1,BB1...
                }
                else
                {
                    $colum = chr($ordA++);
                }

               $sheets=$objPHPExcel->getActiveSheet()->setCellValue($colum.$index_row, $val);

            }
            $index_row++;
        }


        $excel_name = '信息统计表';
        
        // 输出Excel表格到浏览器下载
        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename="tongji.xls"'); //excel表格名称
        $objWriter->save('php://output'); 
  

    }