Are there specific PHP libraries or tools that can help in creating Excel files with custom formatting?

To create Excel files with custom formatting in PHP, you can use the PHPExcel library. This library allows you to set custom formatting options such as font style, color, alignment, borders, and more. By using PHPExcel, you can easily generate Excel files with the desired formatting to meet your specific requirements.

require 'PHPExcel/Classes/PHPExcel.php';

$objPHPExcel = new PHPExcel();

// Set custom formatting options
$objPHPExcel->getActiveSheet()->getStyle('A1')->getFont()->setBold(true);
$objPHPExcel->getActiveSheet()->getStyle('A1')->getFont()->setColor(new PHPExcel_Style_Color(PHPExcel_Style_Color::COLOR_RED));
$objPHPExcel->getActiveSheet()->getStyle('A1')->getAlignment()->setHorizontal(PHPExcel_Style_Alignment::HORIZONTAL_CENTER);

// Add data to the Excel file
$objPHPExcel->setActiveSheetIndex(0)
    ->setCellValue('A1', 'Hello World');

// Save the Excel file
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('custom_formatting_example.xlsx');