Symfony Crawler closest()

closest.php

<?php

/**
 * @param Crawler $crawler
 * @param string $cssSelector
 * @return Crawler
 */
function closest(Crawler $crawler, $cssSelector)
{
    $xpath = (new CssSelectorConverter())->toXPath($cssSelector, './');

    $closest = null;

    for (
        $domNode = $crawler->getNode(0);
        $domNode !== null && $domNode->nodeType === XML_ELEMENT_NODE;
        $domNode = $domNode->parentNode
    ) {
        $subcrawler = new Crawler($domNode);
        $subcrawlerFiltered = $subcrawler->filterXPath($xpath);
        if (count($subcrawlerFiltered) > 0) {
            $closest = $subcrawlerFiltered;
            break;
        }
    }

    if ($closest === null) {
        $closest = new Crawler();
    }

    return $closest;
}