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

Consider url like this

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.

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

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