DiDom\Element::closest PHP Method

    public function closest($selector, $strict = false)
    {
        $node = $this;
        while (true) {
            $parent = $node->parent();
            if ($parent === null or $parent instanceof Document) {
                return null;
            }
            if ($parent->matches($selector, $strict)) {
                return $parent;
            }
            $node = $parent;
        }
    }