How to use php DOM document? [closed]

Answer 1

$document = new \DomDocument('1.0', 'UTF-8');
$document->loadHTML($source);

$rootElement = $document->documentElement;

$unwantedTags = $rootElement->getElementsByTagName('a');

foreach($unwantedTags as $tag)
{
  $tag->parentNode->removeChild($tag);
}