In what scenarios would it be more appropriate to use a parser instead of get_meta_tags() to retrieve meta tags in PHP?

When the HTML structure is complex or the meta tags are not easily accessible using get_meta_tags(), it would be more appropriate to use a parser like DOMDocument or SimpleXMLElement in PHP. These parsers allow for more flexibility in navigating and extracting data from the HTML document.

// Example using DOMDocument to retrieve meta tags
$doc = new DOMDocument();
$doc->loadHTMLFile('https://www.example.com');
$metaTags = $doc->getElementsByTagName('meta');

foreach ($metaTags as $tag) {
    if ($tag->hasAttribute('name') && $tag->getAttribute('name') == 'description') {
        $description = $tag->getAttribute('content');
        echo $description;
    }
}