require('phpQuery/phpQuery.php');
$doc['ul > li']
->addClass('my-new-class')
->filter(':last')
->addClass('last-li')
->toReference($li);
foreach($ul['> li'] as $li) {
// iteration returns PLAIN dom nodes, NOT phpQuery objects
$tagName = $li->tagName;
$childNodes = $li->childNodes;
// so you NEED to wrap it within phpQuery, using pq();
pq($li)->addClass('my-second-new-class');
}
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