使用PHPExcel导出Excel表

 /**
     * Excel导出
     * @param $fileName（文件名）
     * @param $headArr （表头）
     * @param $data    （每一行的数据）
     * @throws \PHPExcel_Exception
     * @throws \PHPExcel_Reader_Exception
     */
    function getExcel($fileName,$headArr,$data){
        include_once (THINK_PATH."Library/Vendor/phpexcel/PHPExcel.php");
        include_once (THINK_PATH."Library/Vendor/phpexcel/PHPExcel/Writer/Excel2007.php");
        include_once (THINK_PATH."Library/Vendor/phpexcel/PHPExcel/Writer/Excel5.php");
        include_once (THINK_PATH."Library/Vendor/phpexcel/PHPExcel/IOFactory.php");
        if(empty($data) || !is_array($data)){
            die("data must be a array");
        }
        if(empty($fileName)){
            exit;
        }
        $date = date("Y_m_d",time());
        $fileName .= "_{$date}.xlsx";

        //创建新的PHPExcel对象
        $objPHPExcel = new \PHPExcel();
        $objProps = $objPHPExcel->getProperties();

        //设置表头
        $key = ord("A");
        $key2 = ord("A");
        $colum2 = '';
        $objActSheet = $objPHPExcel->getActiveSheet();
        $objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth(25);
        foreach($headArr as $v){
            $colum = chr($key);
            $objPHPExcel->setActiveSheetIndex(0) ->setCellValue($colum2.$colum.'1', $v);
            if($key < 90){
                $key += 1;
            }else{
                $key = ord("A");
                $colum2 = chr($key2);
                $key2++;
            }
        }
        //exit;
        $column = 2;

        foreach($data as $key => $rows){ //行写入
            $span = ord("A");
            $span2 = ord("A");
            $j2 = '';
            foreach($rows as $keyName=>$value){// 列写入
                $j = chr($span);
                //$objActSheet->setCellValue($j.$column, $value);
                //把每个单元格设置成分文本类型
                //dump($j2.$j.$column);
                $objActSheet->setCellValueExplicit($j2.$j.$column,$value,\PHPExcel_Cell_DataType::TYPE_STRING);

                if($span < 90){
                    $span += 1;
                }else{
                    $span = ord("A");
                    $j2 = chr($span2);
                    $span2++;
                }
            }
            $column++;
        }
       // exit;
        $fileName = iconv("utf-8", "gb2312", $fileName);
        //重命名表
        $objPHPExcel->getActiveSheet()->setTitle('Simple');
        //设置活动单指数到第一个表,所以Excel打开这是第一个表
        $objPHPExcel->setActiveSheetIndex(0);
        //将输出重定向到一个客户端web浏览器(Excel2007)
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header("Content-Disposition: attachment; filename=\"$fileName\"");
        header('Cache-Control: max-age=0');
        $objWriter = \PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
//        if(!empty($_GET['excel'])){
//            $objWriter->save('php://output'); //文件通过浏览器下载
//        }else{
//            $objWriter->save($fileName); //脚本方式运行，保存在当前目录
//        }
        $objWriter->save('php://output');
        exit;

    }