Are there any pre-existing solutions or libraries available for saving form data to Excel files in PHP?

To save form data to Excel files in PHP, you can use the PHPExcel library, which allows you to create and manipulate Excel files easily. This library provides functions to set cell values, styles, and formats, making it ideal for saving form data to Excel.

// Include PHPExcel library
require_once 'PHPExcel/Classes/PHPExcel.php';

// Create new PHPExcel object
$objPHPExcel = new PHPExcel();

// Set cell values with form data
$objPHPExcel->setActiveSheetIndex(0)
    ->setCellValue('A1', $_POST['field1'])
    ->setCellValue('B1', $_POST['field2'])
    ->setCellValue('C1', $_POST['field3']);

// Save Excel file
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('form_data.xlsx');