xny/vendor/phpoffice/phpspreadsheet/samples/Pdf/21c_Pdf.php

<?php

use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Pdf\Mpdf;

require __DIR__ . '/../Header.php';

// Issue 2432 - styles were too large to fit in first Mpdf chunk, causing problems.
$spreadsheet = new Spreadsheet();
$sheet = $spreadsheet->getActiveSheet();
$counter = 0;
$helper->log('Populate spreadsheet');
for ($row = 1; $row < 501; ++$row) {
    $sheet->getCell("A$row")->setValue(++$counter);
    // Add many styles by using slight variations of font color for each.
    $sheet->getCell("A$row")->getStyle()->getFont()->getColor()->setRgb(sprintf('%06x', $counter));
    $sheet->getCell("B$row")->setValue(++$counter);
    $sheet->getCell("C$row")->setValue(++$counter);
}

$helper->log('Write to Mpdf');
$writer = new Mpdf($spreadsheet);
$filename = $helper->getFileName('21c_Pdf_mpdf.xlsx', 'pdf');
$writer->save($filename);
$helper->log("Saved $filename");