Chèn công thức Excel trong PHPExcelPublished: 07 May 2021 | Hits: 445https://stackoverflow.com/questions/21302389/how-can-insert-formula-in-excel-sheet-using-phpexcel $row = 80; $objPHPExcel->getActiveSheet()->setCellValue("B1", "=COUNTA(D3:D$row)");