It works, but you should have cached that strrev, no?

This is more efficient than using array_column because you can return early.

The PHP version seems to be broken. You can't submit: the submit button never appears.

Hi, there seems to be a problem with the PHP setup. You can't submit.

Still can't submit.

Nice.

This may pass the tests but it doesn't guarantee that $a is actually the last vowel.

Strings are mutable, OK, didn't know that.

The initial test cases give you a very wrong impression of what the code is supposed to do.

I think you got yourself a oneliner there, my friend :-)

I think this should be kyu 6.

7 is for beginners who are not absolute beginners, but don't have much experience yet,
and sending a value to a generator is a bit tricky.

Damn completely forgot that if the sum of the digits is divisible by 9 then the whole number is divisible by 9