How to use php to remove the last letter in a word, if only it is a vowel?

Question

PHP

How to do it in the best and fastest way, and not just brute force.

Answer 1

$str = "hello";
$vowels = ['a', 'e', 'i', 'o', 'u', 'y'];

if (in_array(substr($str) - 1), $vowels) {
    echo 'Гласная';
} else {
    echo 'Согласная';
}

Answer 2

And how, apart from sorting through the letters, can you understand that it is a consonant?

Answer 3

!in_array('a', 'e', ​​'and', ...)