php开发中如何将word文档转换pdf格式

<?php
require_once 'PHPWord/Classes/PHPWord.php';
$PHPWord = new \PhpOffice\PhpWord\PhpWord();
$document = $PHPWord->loadTemplate('example.docx');
$html = $document->saveHTML();
echo $html;
?>

<?php
require_once('TCPDF-master/tcpdf.php');
$pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
$pdf->SetCreator(PDF_CREATOR);
$pdf->SetAuthor('Author Name');
$pdf->SetTitle('TCPDF Example 001');
$pdf->SetSubject('TCPDF Tutorial');
$pdf->SetKeywords('TCPDF, PDF, example, test, guide');
$pdf->setPrintHeader(false);
$pdf->setPrintFooter(false);
$pdf->AddPage();
$pdf->writeHTML($html, true, false, true, false, '');
$pdf->Output('example.pdf', 'I');
?>