How get list subItens nodes separateds using PHP DOM - php

Question

I was seeing this tip
PHP DOM get items from first ul element
But in this case:
<li>First item
<ul>
<li>
First SubItem
</li>
<li>
Second SubItem
</li>
</ul>
</li>
PHP Code:
$DOM = new DOMDocument;
libxml_use_internal_errors(true);
$DOM->loadHTML( $output);
$items = $DOM->getElementsByTagName('ul');
echo '<ul>';
foreach ($items->item(3)->getElementsByTagName('li') as $li) {
var_dump($li);die();
echo '<li>'.$li->nodeValue;
$ul = $li->getElementsByTagName('ul');
echo '<ul>';
echo '--->'.$ul->length.'<br>';
for($u=0;$u<$ul->length;$u++){
foreach ($ul->item($u)->getElementsByTagName('li') as $lii) {
echo '<li>'.$lii->nodeValue.'</li>';
}
}
echo '</ul>';
echo '</li>';
}
echo '</ul>';
The Problem is:
Im getting in //$li->nodeValue;// "First itemFirst SubItemSecond SubItem" as the Fist node;
I need get this items separated (subItems)

Answer 1

I'm assuming you just want to retrieve the text values from those <li> tags.
You can greatly simplify the query with DOMXPath as ->query('//li') will fetch all <li> tags in your code snippet.
$DOM = new DOMDocument();
$DOM->loadHTML($output);
$xPath = new DOMXPath($DOM);
if($xpResponse = $xPath->query('//li/text()')) {
echo "<ul>\n";
foreach($xpResponse as $xNode) {
echo "<li>" . trim($xNode->nodeValue) . "</li>\n";
}
echo "</ul>\n";
}
This will simply output (as HTML):
First item
First SubItem
Second SubItem