You can use this in this way.
$doc = new DOMDocument('1.0', 'UTF-8');
$doc->loadHTML($content); // html content
$xpath = new DOMXPath($doc);
$doc->normalizeDocument();
Note that, you can use $doc->normalizeDocument(); at any point of time.
(PHP 5, PHP 7)
DOMDocument::normalizeDocument — Normalise le document
Cette méthode fonctionne comme si vous sauvegardiez le document puis vous le chargiez de nouveau, rendant le document sous une forme "normale".
Aucune valeur n'est retournée.
You can use this in this way.
$doc = new DOMDocument('1.0', 'UTF-8');
$doc->loadHTML($content); // html content
$xpath = new DOMXPath($doc);
$doc->normalizeDocument();
Note that, you can use $doc->normalizeDocument(); at any point of time.