FluentDOM\Query::text PHP Метод

    public function text($text = NULL)
    {
        if (isset($text)) {
            $callback = Constraints::isCallable($text, FALSE, TRUE);
            foreach ($this->_nodes as $index => $node) {
                if ($callback) {
                    $node->nodeValue = $callback($node, $index, $node->nodeValue);
                } else {
                    $node->nodeValue = $text;
                }
            }
            return $this;
        } else {
            $result = '';
            foreach ($this->_nodes as $node) {
                $result .= $node->textContent;
            }
            return $result;
        }
    }