Abbreviate name function

<?php
function abbreviate_name(string $name): string
{
    if (strlen($name) <= 13) {
        return $name;
    }

    // Removendo preposições do nome
    $name_arr = explode(' ', preg_replace('/\s(de|da)\s/', ' ', $name));
    $count = count($name_arr) - 1;

    while (strlen($name) > 13) {
        $name_arr[$count] = substr($name_arr[$count], 0, 1) . '.';
        $name = implode(' ', $name_arr);
        $count--;
    }

    return $name;
}

var_dump(abbreviate_name("Dorian Sampaio Neto"));
var_dump(abbreviate_name("Yan Rui Fonseca"));
var_dump(abbreviate_name("Cleber Alves"));
var_dump(abbreviate_name("Gabriel de Sousa Castro"));