How can the use of a DOM parser, such as DOMDocument, improve the handling of HTML or XML content in PHP compared to regex?

Using a DOM parser like DOMDocument in PHP is a more reliable and robust way to handle HTML or XML content compared to using regular expressions (regex). DOM parsers provide a structured way to navigate, manipulate, and extract data from HTML or XML documents, ensuring better accuracy and avoiding common pitfalls associated with parsing complex markup languages.

// Example PHP code snippet using DOMDocument to parse HTML content
$html = '<div><p>Hello, World!</p></div>';

$dom = new DOMDocument();
$dom->loadHTML($html);

$paragraphs = $dom->getElementsByTagName('p');
foreach ($paragraphs as $paragraph) {
    echo $paragraph->nodeValue; // Output: Hello, World!
}