Not a kata issue. This should have been a Question. Closing.

I could tell you where the error is, but I won't. Your program incorrectly implements the spec.

That's not php, I mean Spiro's code.

My bad

Please don't create an issue when your code fails, read this: https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution

Your code is wrong, read the instructions again (hint: check the sample tests one by one).

No problem, read this: https://github.com/codewars/codewars.com/wiki/Markdown-Formatting#block-code-formatting to post your code the right way next time.

Maybe that part was right, but was lost because Spiron didn't use markdown formatting properly.

Your code is wrong:

const std::vector& numbers

Template arguments are not given i.e. vector of what?

Should be fixed. If not working, copy your solution and hit 'reset'.

But my function <...> doesn't work and i'm completely clueless why.

That's not a kata issue. That's issue with your code (question).

Expected: equal to volcano,
Actual: climbing

There's your feedback. For 2nd sample test, you're returning climbing, and not volcano. You're calculating score when there's a space, what if there isn't one at the end?