public function getFilter($key)
    {
        if (!isset($this->filters[$key])) {
            return null;
        }
        return $this->filters[$key];
    }
public function getFilter($key)
    {
        if (!isset($this->filters[$key])) {
            return null;
        }
        return $this->filters[$key];
    }
public function getFilter ( $ key ) { if ( ! isset ( $ this -> filters [ $ key ] ) ) { return null ; } return $ this -> filters [ $ key ] ; }
Gets a specific filter, by key.

@param   string  $key
@return  mixed|null
Gets a specific filter by key .