phpQueryObject::parent PHP Method

    public function parent($selector = null)
    {
        $stack = array();
        foreach ($this->elements as $node) {
            if ($node->parentNode && !$this->elementsContainsNode($node->parentNode, $stack)) {
                $stack[] = $node->parentNode;
            }
        }
        $this->elementsBackup = $this->elements;
        $this->elements = $stack;
        if ($selector) {
            $this->filter($selector, true);
        }
        return $this->newInstance();
    }