find the longest word with consecutive consonants in php

**
 * Returns the word with the most consecutive Consonants.
 * 
 * Find and return the word with the most consecutive consonants in a sentence.
 * If more than 1 is found, print only the first.
 *
 * @param string $sentence The sentence
`
<?php
        
function returnTheWordWithTheMostConsecutiveConsonants(string $sentence)
{
    $sentence = ['a','e','i','o','y','A','E','I','O','Y'];
    return !$sentence;
}

function testAndValidateEach(array $sentences)
{
    $max = -1;
    $countConsonne = 0;
    $i = 0;
    while($i < count($sentences)) {
        while(returnTheWordWithTheMostConsecutiveConsonants($sentences[$i])) {
            $countConsonne++;
            $i++;
        }
        if ($countConsonne > $max && $countConsonne != -1) {
            $max = $countConsonne;
        } else {
            $countConsonne = 0;
        }

        $i++;
    }
    return $max;
}
echo testAndValidateEach($sentences);

source https://stackoverflow.com/questions/70137129/find-the-longest-word-with-consecutive-consonants-in-php