安装扩展

composer require phpoffice/phpspreadsheet

引入扩展

use PhpOffice\PhpSpreadsheet\IOFactory;
use PhpOffice\PhpSpreadsheet\Spreadsheet;

导入到php，xls 和xlsx都可以

下面是简单示例，有很多可以优化的地方和格式导入

$inputFileName='D:\\1111.xlsx';
dump($inputFileName);
$spreadsheet =IOFactory::load($inputFileName);
$sheetData = $spreadsheet->getSheet(0)->toArray();
dump($sheetData);

导出 到服务器

 // 用  PhpSpreadsheet  导出数据
$objPHPExcel = new Spreadsheet();
 //插入头
 $objPHPExcel->setActiveSheetIndex(0)
 ->setCellValue('A1', 'ID')
 ->setCellValue('B1', '标题')
 ->setCellValue('C1', '描述')
 ->setCellValue('D1', '图片');
 //插入数据
 $list=ArticleModel::limit(5)->select()->toArray();
 $i=2;
 foreach($list as $k=>$v){
     $objPHPExcel->setActiveSheetIndex(0)
     ->setCellValue('A'.($i+$k), $v['id'])
     ->setCellValue('B'.($i+$k), $v['title'])
     ->setCellValue('C'.($i+$k), $v['desc'])
     ->setCellValue('D'.($i+$k), $v['pic']);
 }
 $writer = IOFactory::createWriter($objPHPExcel, 'Xlsx');
 // 文件下载到服务器
 $writer->save('/4545.xlsx');