function Crawler::children

Returns the children nodes of the current selection.

Throws

\InvalidArgumentException When current node is empty

\RuntimeException If the CssSelector Component is not available and $selector is provided

File

vendor/symfony/dom-crawler/Crawler.php, line 483

Class

Crawler

Crawler eases navigation of a list of \DOMNode objects.

Namespace

Symfony\Component\DomCrawler

Code

public function children(?string $selector = null) : static {
    if (!$this->nodes) {
        throw new \InvalidArgumentException('The current node list is empty.');
    }
    if (null !== $selector) {
        $converter = $this->createCssSelectorConverter();
        $xpath = $converter->toXPath($selector, 'child::');
        return $this->filterRelativeXPath($xpath);
    }
    $node = $this->getNode(0)->firstChild;
    return $this->createSubCrawler($node ? $this->sibling($node) : []);
}