Spreadsheets, driven by code.

<?php

require 'vendor/autoload.php';

use \PhpOffice\PhpSpreadsheet\IOFactory;
use \PhpOffice\PhpSpreadsheet\Writer\Pdf\Dompdf;

// Load the existing Excel file.
$spreadsheet = IOFactory::load('data.xlsx');

// Hand the spreadsheet to the Dompdf writer and save it as a PDF.
$writer = new Dompdf($spreadsheet);
$writer->save('output.pdf');

echo "Done. Converted data.xlsx to output.pdf\n";