public function get_rating($key = 0)
	{
		$ratings = $this->get_ratings();
		if (isset($ratings[$key]))
		{
			return $ratings[$key];
		}

		return null;
	}
public function get_rating($key = 0)
	{
		$ratings = $this->get_ratings();
		if (isset($ratings[$key]))
		{
			return $ratings[$key];
		}

		return null;
	}
public function get_rating ( $ key = 0 ) { $ ratings = $ this -> get_ratings ( ) ; if ( isset ( $ ratings [ $ key ] ) ) { return $ ratings [ $ key ] ; } return null ; }
Get a single rating

@param int $key
@return SimplePie_Rating|null
Get a single rating