public function getFilter($key, $default_value = '') {
		if ($this->filters->has($key)) {
			return $this->filters[$key];
		}

		return $default_value;
	}
public function getFilter($key, $default_value = '') {
		if ($this->filters->has($key)) {
			return $this->filters[$key];
		}

		return $default_value;
	}
public function getFilter ( $ key , $ default_value = '' ) { if ( $ this -> filters -> has ( $ key ) ) { return $ this -> filters [ $ key ] ; } return $ default_value ; }
Get single filter by key

@param $key
@param string $default_value Default value if key is not found

@return mixed|string
Get single filter by key