protected function getFromCache($key)
    {
        return isset($this->_cache[$key]) ? $this->_cache[$key] : null;
    }
protected function getFromCache($key)
    {
        return isset($this->_cache[$key]) ? $this->_cache[$key] : null;
    }
protected function getFromCache ( $ key ) { return isset ( $ this -> _cache [ $ key ] ) ? $ this -> _cache [ $ key ] : null ; }
Get data from cache
@param string $key
@return mixed
Get data from cache