<?php
function mb_ucwords($string, $delimiter = ' (-"[') {
    $result = $upper = '';
    for ($i = 0; $i < mb_strlen($string); $i++) {
        $letter = mb_substr($string, $i, 1);
        $result .= $upper || $i == 0 ? mb_convert_case($letter, MB_CASE_TITLE) : $letter;
        $upper = ($i + 1) < mb_strlen($string) && mb_strpos($delimiter, $letter) !== false ? 1 : 0;
    }
    return $result;
}
?>