can uri segment accept last segment value as 0, why? why not?

[eluser]Unknown[/eluser]
Consider url like this

http://ellislab.com/forums/newtopic/0

here
i want last segment
1 - forums
2 - newtopic
3 - 0

So if i used,
$this->url->segment(3), give me some result? or Id something

thank you for ur help.

[eluser]InsiteFX[/eluser]
Did you try echoing it out to see what you get?

Most likely PHP will think it is FALSE 0 if it doe's then you could try the below.

Code:

$value = (int) $this->url->segment(3);