Need Help - Page 1

Sorry, im german and im not good in france, so i write a little bit of broken englisch here.

I tried to use the html2pdf class and opened a test file, but the test file is after open it (in browser) empty in the source, but the file is filled with this text:

<?php
    $content = "
<page>
    <h1>test</h1>
    <br>
    Ceci est un <b>exemple d'utilisation</b>
    de <a href='http://html2pdf.fr/'>HTML2PDF</a>.<br>
</page>";

    require_once('inc/html2pdf.class.php');
    $html2pdf = new HTML2PDF('P','A4','fr');
    $html2pdf->WriteHTML($content);
    $html2pdf->Output('exemple.pdf');
?>

i hope anybody help

you need to use php