DOMDocument appendXML with special characters

Question

I am retreiving some html strings from my database and I would like to parse these strings into my DOMDocument. The problem is, that the DOMDocument gives warnings at specia

Answer 1

Here's another approach, because we did not want possibly slow network requests (or any network requests at all resulting from user input):

loadHTML('');

$html = 'test ';
$fragment = $document->createDocumentFragment();

$html = '

]>
'.$html.'';

$newdom = new \DOMDocument();
$newdom->loadXML($html, LIBXML_HTML_NOIMPLIED | LIBXML_NOCDATA | LIBXML_NOENT | LIBXML_NONET | LIBXML_NOBLANKS);

foreach ($newdom->documentElement->childNodes as $childnode)
  $fragment->appendChild($fragment->ownerDocument->importNode($childnode, TRUE));

$document->getElementsByTagName('body')[0]->appendChild($fragment);

echo $document->saveHTML();

Here we include the relevant part of the DTD, specifically the latin1 entity definitions as an internal DOCTYPE definition. Then the HTML content is wrapped in a document element to be able to process a sequence of child elements. The parsed nodes are then imported and added into the target DOM.

Our actual implementation uses file_get_contents to load the DTD containing all entity definitions from a local file.