if ($converter->Convert($doc)) {
    $doc->Save($output_path . "_01.pdf", SDFDoc::e_linearized);
} else {
    echo printf("Conversion failed. HTTP Code: %d\n%s", $converter->GetHTTPErrorCode(), $converter->GetLog());
}
$doc->Close();
//--------------------------------------------------------------------------------
// Example 2) Modify the settings of the generated PDF pages and attach to an
// existing PDF document.
// open the existing PDF, and initialize the security handler
$doc = new PDFDoc("../../TestFiles/numbered.pdf");
$doc->InitSecurityHandler();
// create the HTML2PDF converter object and modify the output of the PDF pages
$converter = new HTML2PDF();
$converter->SetImageQuality(25);
$converter->SetPaperSize(PrinterMode::e_11x17);
// insert the web page to convert
$converter->InsertFromURL($host . $page0);
// convert the web page, appending generated PDF pages to doc
if ($converter->Convert($doc)) {
    $doc->Save($output_path . "_02.pdf", SDFDoc::e_linearized);
} else {
    echo printf("Conversion failed. HTTP Code: %d\n%s", $converter->GetHTTPErrorCode(), $converter->GetLog());
}
$doc->Close();
//--------------------------------------------------------------------------------
// Example 3) Convert multiple web pages, adding a table of contents, and setting
// the first page as a cover page, not to be included with the table of contents outline.
$doc = new PDFDoc();
$converter = new HTML2PDF();
// Add a cover page, which is excluded from the outline, and ignore any errors