Parsing HTML with PHP's traditional DOMDocument engine has historically been frustrating because it only supported HTML4 and struggled with modern web standards. PHP 8.4 introduces a brand-new, standards-compliant DOM API under the Dom namespace. It natively supports HTML5 parsing, respects spec compliance, and works smoothly with query selectors.

PHP 8.4 Example:

PHP
use Dom\HTMLDocument;

$html = '<!DOCTYPE html><html><body><section><p class="intro">Hello HTML5!</p></section></body></html>';
$dom = HTMLDocument::createFromString($html);

$paragraph = $dom->querySelector('.intro');
echo $paragraph->textContent; // Outputs: Hello HTML5!

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