public function get_caption($key = 0)
	{
		$captions = $this->get_captions();
		if (isset($captions[$key]))
		{
			return $captions[$key];
		}
		else
		{
			return null;
		}
	}
public function get_caption($key = 0)
	{
		$captions = $this->get_captions();
		if (isset($captions[$key]))
		{
			return $captions[$key];
		}
		else
		{
			return null;
		}
	}
public function get_caption ( $ key = 0 ) { $ captions = $ this -> get_captions ( ) ; if ( isset ( $ captions [ $ key ] ) ) { return $ captions [ $ key ] ; } else { return null ; } }
Get a single caption

@param int $key
@return SimplePie_Caption|null
Get a single caption