Method getCartCountItems

public function getCartCountItems()
{
    if (empty($this->fullitems)) {
        $this->fullitems = $this->getFullItems();
        // get them from parent
    }
    $count = 0;
    if (!empty($this->fullitems[0])) {
        foreach ($this->fullitems[0] as $k => $v) {
            if (isset($v['quantity']) && (int) $v['quantity'] > 0) {
                $count += (int) $v['quantity'];
            }
        }
    }
    return $count;
}