lithium\data\source\Result::next PHP Метод

    public function next()
    {
        if ($this->_buffer) {
            list($this->_key, $this->_current) = array_shift($this->_buffer);
            return $this->_current;
        }
        if (!($next = $this->_fetch())) {
            $this->_key = null;
            $this->_current = null;
            $this->_valid = false;
            return null;
        } else {
            list($this->_key, $this->_current) = $next;
            $this->_valid = true;
        }
        return $this->_current;
    }