composer require phpoffice/phpspreadsheet

安装后：

按需要引入文件

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

		//读取模板
 		$spreadsheet  = IOFactory::load(public_path('excel/exportOrder.xlsx'));
 		// 读取第一个工作表
        $excelSheet = $spreadsheet->getSheet(0);
        $activerow = 2;
        //插入所有需要的行数
        $excelSheet-> insertNewRowBefore(3, sizeof($customer));
          //移除行数
        $excelSheet->removeRow(2, 1);
        foreach ($customer as $k => $v) {
           $excelSheet->setCellValue('A'.$activerow, $v->email);
         
           $activerow++;
      	}
        $filename = '客户订单汇总'.$time.".xlsx";
        //直接输出到浏览器
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header('Content-Disposition: attachment;filename="'.$filename.'"');
        header('Cache-Control: max-age=0');
        $writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet , 'Xlsx');
        $writer->save('php://output');