'sheet1',
     * 'list' =>
     * [
     * ['name' => 'sheet1_line1_name', 'item' => 'sheet1_line1_item'],
     * ['name' => 'sheet1_line2_name', 'item' => 'sheet1_line1_item']
     * ],
     * 'column' =>
     * [
     * 'A' => ['title' => 'title_name', 'field' => 'name'],
     * 'B' => ['title' => 'title_item', 'field' => 'item']
     * ],
     * ],
     * [
     * 'title' => 'sheet2',
     * 'list' =>  [
     * ['name' => 'sheet2_line1_name', 'item' => 'sheet2_line1_item'],
     * ['name' => 'sheet2_line2_name', 'item' => 'sheet2_line1_item']
     * ],
     * 'column' =>
     * [
     * 'A' => ['title' => 'title_name', 'field' => 'name'],
     * 'B' => ['title' => 'title_item', 'field' => 'item']
     * ],
     * ],
     * ];
     * @param string $fileName
     */
    public static function exportToExcel($data, $fileName = '数据导出')
    {
        $objPHPExcel = new PHPExcel(); //实例化Excel类
        foreach ($data as $key => $value) {
            $objPHPExcel->createSheet($key);
            $objPHPExcel->setActiveSheetIndex($key);
            $activeSheet = $objPHPExcel->getactivesheet();
            $activeSheet->setTitle($value['title']);
            $column = $value['column'];
            $list = $value['list'];

            foreach ($list as $kk => $vv) {
                $line = $kk + 2;
                foreach ($column as $kkk => $vvv) {
                    $title = $vvv['title'];
                    $field = $vvv['field'];
                    $activeSheet->getColumnDimension($kkk)->setWidth(15); //设置单元格宽
                    $fieldData = !empty($vv[$field]) ? $vv[$field] : '';
                    $activeSheet->getStyle($kkk . 1)->getFont()->setName('宋体')->setBold(true); //字体加粗; //字体
                    $activeSheet->setcellvalue($kkk . 1, $title);//第A列 第1行，标题
                    $activeSheet->setcellvalue($kkk . $line, $fieldData);//第A列 第$k行
                }
            }
        }
        if ($objPHPExcel->getSheetCount() > 1) {
            $objPHPExcel->removeSheetByIndex($objPHPExcel->getSheetCount() - 1); //删除模板sheet
        }
        //最后通过浏览器输出
        static:: responseExcelFile($fileName, $objPHPExcel, 'Excel5');
        exit;
    }

    /**
     * 最后通过浏览器输出
     * @param $fileName
     * @param $objPHPExcel
     * @param string $excelVersion
     */
    public static function responseExcelFile($fileName, $objPHPExcel, $excelVersion = 'Excel5')
    {
        if (static:: isIE()) {//解决文件名含中文时下载乱码问题。测试浏览器：IE8\IE11\Chrome41\Firefox38
            $fileName = urlencode($fileName);
        }
        $fileName .= $excelVersion === 'Excel5' ? '.xls' : '.xlsx';

        ob_end_clean();
        ob_start();
        //添加fileDownload cookie便于jquery.fileDownload.js判断下载状态
        header('Set-Cookie: fileDownload=true; path=/');
        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename="' . $fileName . '"');
        header('Cache-Control: max-age=0');
        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, $excelVersion);
        $objWriter->save('php://output');
    }
    /**
     * 判断当前请求浏览器是否IE
     * @return bool
     */
    private static function isIE()
    {
        $u_agent = $_SERVER['HTTP_USER_AGENT'];
        return (preg_match('/MSIE/i', $u_agent) || preg_match('/Trident/i', $u_agent)) && !preg_match('/Opera/i', $u_agent);
    }
}

参考博客

https://www.cnblogs.com/xiaoli3007/p/5315595.html

http://www.thinkphp.cn/topic/3739.html

http://www.thinkphp.cn/code/1893.html