How can PHP be used to write data into Excel cells?

To write data into Excel cells using PHP, you can use a library like PHPExcel. This library allows you to create Excel files, add worksheets, and populate cells with data. By using PHPExcel, you can easily generate Excel files with custom data from your PHP application.

require 'PHPExcel.php';

$objPHPExcel = new PHPExcel();

$objPHPExcel->setActiveSheetIndex(0)
            ->setCellValue('A1', 'Hello')
            ->setCellValue('B1', 'World');

$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('example.xlsx');