/**
* Handles the PDF Conversion
*/
function _print_pdf($html)
{
global $wp_query;
if (isset($wp_query->query_vars['pdf'])) {
// convert to PDF
$title = wp_strip_all_tags(get_the_title());
$filename = $title . '.pdf';
$cached = PDF_CACHE_DIRECTORY . $title . '-' . substr(md5(get_the_modified_time()), -6) . '.pdf';
// check if we need to generate PDF against cache
if (defined('DISABLE_PDF_CACHE') && DISABLE_PDF_CACHE || isset($_SERVER['HTTP_PRAGMA']) && $_SERVER['HTTP_PRAGMA'] == 'no-cache' || !file_exists($cached)) {
// we may need more than 30 seconds execution time
//set_time_limit(60);
// include the library
require_once 'vendor/autoload.php';
// html to pdf conversion
$dompdf = new Dompdf\Dompdf();
$dompdf->setPaper(defined('DOMPDF_PAPER_SIZE') ? DOMPDF_PAPER_SIZE : DOMPDF_DEFAULT_PAPER_SIZE, defined('DOMPDF_PAPER_ORIENTATION') ? DOMPDF_PAPER_ORIENTATION : 'portrait');
$options = $dompdf->getOptions();
$options->set(array('fontDir' => DOMPDF_FONT_DIR, 'fontCache' => DOMPDF_FONT_CACHE, 'isHtml5ParserEnabled' => DOMPDF_ENABLE_HTML5, 'isRemoteEnabled' => DOMPDF_ENABLE_REMOTE));
// allow setting a different DPI value
if (defined('DOMPDF_DPI')) {
$options->set(array('dpi' => DOMPDF_DPI));
}
$dompdf->setOptions($options);
// allow other plugins to filter the html before passing it to dompdf
$html = apply_filters('pdf_html_to_dompdf', $html);
$dompdf->loadHtml($html);
//$dompdf->setBasePath(get_stylesheet_directory_uri());
$dompdf->render();
if (defined('DISABLE_PDF_CACHE') && DISABLE_PDF_CACHE) {
//just stream the PDF to user if caches are disabled
return $dompdf->stream($filename, array("Attachment" => false));
}
// create PDF cache if one doesn't yet exist
if (!is_dir(PDF_CACHE_DIRECTORY)) {
@mkdir(PDF_CACHE_DIRECTORY);
}
//save the pdf file to cache
file_put_contents($cached, $dompdf->output());
}
//read and display the cached file
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="' . $filename . '"');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($cached));
header('Accept-Ranges: bytes');
readfile($cached);
} else {
// print the HTML raw
echo $html;
}
// kill php after output is complete
die;
}