Is there something like:
$dompdf = new DOMPDF();
$dompdf->resolution(200);
$dompdf->load_html($html);
$dompdf->render();
Instead of having to set in the dompdf_config.inc.php, as I have multiple PDF files and they need different DPI.
If you are using the latest code from github then you can do the following:
php
$dompdf = new DOMPDF;
$dompdf->set_option( 'dpi' , '200' );
$dompdf->load_html($html);
$dompdf->render();
The full option list can be seen in the source.