Вам нужен PhpSpreadsheet !!
Вы можете выполнить весь процесс экспорта / импорта данных из mysql / excel.
Документация
Мини-пример после установки PHPSpreedsheet:
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx as xlsx; // Instead PHPExcel_Writer_Excel2007
use PhpOffice\PhpSpreadsheet\Worksheet\Drawing as drawing; // Instead PHPExcel_Worksheet_Drawing
use PhpOffice\PhpSpreadsheet\IOFactory as io_factory; // Instead PHPExcel_IOFactory
$objPHPExcel = new Spreadsheet();
$objPHPExcel->setActiveSheetIndex(0);
//NAME WORKSHEET
$objPHPExcel->getActiveSheet()->setTitle("NAME YOU WANT");
//SET MARGIN
$objPHPExcel->getActiveSheet()
->getPageMargins()->setTop(1.91);
$objPHPExcel->getActiveSheet()
->getPageMargins()->setRight(0.64);
$objPHPExcel->getActiveSheet()
->getPageMargins()->setLeft(0.64);
$objPHPExcel->getActiveSheet()
->getPageMargins()->setBottom(1.91);
$objPHPExcel->getActiveSheet()
->getPageMargins()->setHeader(0.76);
$objPHPExcel->getActiveSheet()
->getPageMargins()->setFooter(0.76);
//CELL VALUE 'Manually'
$objPHPExcel->getActiveSheet()->SetCellValue('A1', '****');
$objPHPExcel->getActiveSheet()->SetCellValue('B1', '2020-01-01');
$objPHPExcel->getActiveSheet()->SetCellValue('C1', '2020-01-02');
$objPHPExcel->getActiveSheet()->SetCellValue('D1', '2020-01-03');
$objPHPExcel->getActiveSheet()->SetCellValue('E1', '2020-01-04');
//CELL VALUE WITH DB
$rowCount = 2; //SET START ROW
$query =$mysqli->query('SELECT * FROM users'); //YOUR QUERY
while($row = $query ->fetch_assoc()){
$objPHPExcel->getActiveSheet()->SetCellValue('A'.$rowCount, $row['name']);
$objPHPExcel->getActiveSheet()->SetCellValue('B'.$rowCount, $row['value']);
$objPHPExcel->getActiveSheet()->SetCellValue('C'.$rowCount, $row['value2']);
$objPHPExcel->getActiveSheet()->SetCellValue('D'.$rowCount, $row['value3']);
$objPHPExcel->getActiveSheet()->SetCellValue('E'.$rowCount, $row['value4']);
$rowCount++;
}
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");;
header("Content-Disposition: attachment;filename=nameoffile.xlsx");
header("Content-Transfer-Encoding: binary ");
ob_end_clean();
ob_start();
$objWriter->save('php://output');
exit;