dompdf-example.php

<?php

$filename = 'pdf-download';

$options = new \Dompdf\Options;
$options->set('isRemoteEnabled', true);

$dompdf = new \Dompdf\Dompdf($options);
$dompdf->set_option('defaultFont', 'droidsansfallback');
$dompdf->set_option('isFontSubsettingEnabled', true);
$dompdf->setBasePath(JPATH_ROOT);
$dompdf->setBaseHost(JUri::base());
$dompdf->loadHtml($html);
$dompdf->render();

// 輸出 header 讓 PDF 可以被打開
header('Content-Type: application/pdf; charset=utf-8');
header('Content-disposition: inline; filename="' .  $filename . '.pdf"', true);

// 直接印出來瀏覽器就可以讀取
echo $dompdf->output();