I download Bamini font and try to download pdf. I got ??????????????? for tamil words.
$html='<!DOCTYPE html><html>
<style>
@font-face {
font-family: "Baamini";
src: url("baamini.ttf") format("truetype");
font-weight: normal;
font-style: normal;
}
body{
font-family: "Baamini";
}
</style>';
$html.='<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head>';
$html.='<body><table style="border:1px solid;" width="100%"><tr><td colspan="2" align="center" style="border-bottom:1px solid;">';
$html.='<h3 style="font-family: Baamini;">சமூக நல அமைப்பு <h3>';
$html.='<h5>தொடர்பு எண் : ##########</h5></td></tr></table></body></html>';
$dompdf = new Dompdf();
$dompdf->loadHtml($html);
$dompdf->setPaper('A4', 'landscape');
$dompdf->render();
$dompdf->stream();