public function get_duration($convert = false)
	{
		if ($this->duration !== null)
		{
			if ($convert)
			{
				$time = SimplePie_Misc::time_hms($this->duration);
				return $time;
			}
			else
			{
				return $this->duration;
			}
		}
		else
		{
			return null;
		}
	}
public function get_duration($convert = false)
	{
		if ($this->duration !== null)
		{
			if ($convert)
			{
				$time = SimplePie_Misc::time_hms($this->duration);
				return $time;
			}
			else
			{
				return $this->duration;
			}
		}
		else
		{
			return null;
		}
	}
public function get_duration ( $ convert = false ) { if ( $ this -> duration !== null ) { if ( $ convert ) { $ time = SimplePie_Misc :: time_hms ( $ this -> duration ) ; return $ time ; } else { return $ this -> duration ; } } else { return null ; } }
Get the duration of the enclosure

@param bool $convert Convert seconds into hh:mm:ss
@return string|int|null 'hh:mm:ss' string if `$convert` was specified, otherwise integer (or null if none found)
Get the duration of the enclosure