PHP: Как собрать все метатеги и заголовки с любого сайта

$htmlString = file_get_contents('https://domen.ru/');

// Create a new DOMDocument object.
$htmlDom = new DOMDocument;

//Load the HTML string into our DOMDocument object.
@$htmlDom->loadHTML($htmlString);

$titleTags = $htmlDom->getElementsByTagName('title');

$descriptionTags = $htmlDom->getElementsByTagName('meta');

$keywordsTags = $htmlDom->getElementsByTagName('meta');

$h1Tags = $htmlDom->getElementsByTagName('h1');

$h2Tags = $htmlDom->getElementsByTagName('h2');

$h3Tags = $htmlDom->getElementsByTagName('h3');

$h4Tags = $htmlDom->getElementsByTagName('h4');

$h5Tags = $htmlDom->getElementsByTagName('h5');

$h6Tags = $htmlDom->getElementsByTagName('h6');

// Arrays to store H1 to H6 headings
$extractedtitleTags = [];
$extracteddescriptionTags = [];
$extractedkeywordsTags = [];
$extractedH1Tags = [];
$extractedH2Tags = [];
$extractedH3Tags = [];
$extractedH4Tags = [];
$extractedH5Tags = [];
$extractedH6Tags = [];

// Loop for title
foreach($titleTags as $titleTag){
 // Get the node value of title tag
 $titleValue = trim($titleTag->nodeValue);
 $extractedtitleTags[] = $titleValue;
}

foreach ($descriptionTags as $descriptionTag) {
 if ($descriptionTag->getAttribute('name') == 'description') {
 $extracteddescriptionTags[] = $descriptionTag->getAttribute('content');
 }
}

foreach ($keywordsTags as $keywordsTag) {
 if ($keywordsTag->getAttribute('name') == 'keywords') {
 $extractedkeywordsTags[] = $keywordsTag->getAttribute('content');
 }
}

// Loop for h1
foreach($h1Tags as $h1Tag){
 // Get the node value of h1 tag
 $h1Value = trim($h1Tag->nodeValue);
 $extractedH1Tags[] = $h1Value;
}

// Loop for h2
foreach($h2Tags as $h2Tag){
 // Get the node value of h2 tag
 $h2Value = trim($h2Tag->nodeValue);
 $extractedH2Tags[] = $h2Value;
}

// Loop for h3
foreach($h3Tags as $h3Tag){
 // Get the node value of h3 tag
 $h3Value = trim($h3Tag->nodeValue);
 $extractedH3Tags[] = $h3Value;
}

// Loop for h4
foreach($h4Tags as $h4Tag){
 // Get the node value of h4 tag
 $h4Value = trim($h4Tag->nodeValue);
 $extractedH4Tags[] = $h4Value;
}

// Loop for h5
foreach($h5Tags as $h5Tag){
 // Get the node value of h5 tag
 $h5Value = trim($h5Tag->nodeValue);
 $extractedH5Tags[] = $h5Value;
}

// Loop for h6
foreach($h6Tags as $h6Tag){
 // Get the node value of h6 tag
 $h6Value = trim($h6Tag->nodeValue);
 $extractedH6Tags[] = $h6Value;
}

$headingsArray = [
 "title" => $extractedtitleTags,
 "description" => $extracteddescriptionTags,
 "keywords" => $extractedkeywordsTags,
 "h1" => $extractedH1Tags,
 "h2" => $extractedH2Tags,
 "h3" => $extractedH3Tags,
 "h4" => $extractedH4Tags,
 "h5" => $extractedH5Tags,
 "h6" => $extractedH6Tags
];

echo "<pre>";
print_r($headingsArray);
echo "</pre>";

Как собрать список все URL страниц сайта.

$xml=simplexml_load_file('https://domen.ru/sitemap.xml');
// print_r($xml);
foreach($xml->url as $val)
 {
 echo $val->loc.'<br>';
 }