Phalcon\Cache\Backend\Wincache::exists PHP Метод

    public function exists($keyName = null, $lifetime = null)
    {
        if ($keyName === null) {
            $lastKey = $this->_lastKey;
        } else {
            $lastKey = $this->getPrefixedIdentifier($keyName);
        }
        return wincache_ucache_exists($lastKey);
    }