require_once 'PHPExcel.php'; // Load the PHPExcel library $excel = new PHPExcel(); // Create new PHPExcel object $sheet = $excel->getActiveSheet(); // Get active sheet // Manipulate the active sheet as needed $sheet->setCellValue('A1', 'Hello'); $sheet->setCellValue('B1', 'World'); // Save the modified document $objWriter = PHPExcel_IOFactory::createWriter($excel, 'Excel2007'); $objWriter->save('example.xlsx');In this example, we create a new PHPExcel object and obtain the active worksheet using getActiveSheet(). We then set cell values and save the modified document using the PHPExcel_IOFactory class. The use of the PHPExcel class and PHPExcel_IOFactory class suggests that this code is using the PHPExcel package/library.