ucwords for human names in Brazil.
ucwords personalizada para nomes próprios brasileiros.

<?php
    /**
     * ucwords for human names in Brazil
     * Edit from http://php.net/manual/pt_BR/function.ucwords.php#112795
     * @param string $str
     * @param array $delimiters
     * @param array $exceptions Exceptions are words you don't want converted
     * @return string
     */
    function name($str, $delimiters = array(
        " ",
        "-",
        ".",
        "'",
        "O'",
        "Mc",
    ), $exceptions = array(
        "de",
        "do",
        "da",
        "dos",
        "das",
    )) {
        $result = '';

        foreach ($delimiters as $delimiter) {
            # If string has a delimiter
            if (strstr($str, $delimiter)) {

                $ucfirst = array();
                # Apply ucfirst to every word
                foreach (explode($delimiter, mb_strtolower($str)) as $word) {
                    $word = mb_convert_case($word, MB_CASE_TITLE);

                    # Working with exceptions
                    if (in_array(mb_strtoupper($word), $exceptions)) {
                        $word = mb_strtoupper($word);
                    } elseif (in_array(mb_strtolower($word), $exceptions)) {
                        $word = mb_strtolower($word);
                    } elseif (preg_match('/^M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})$/', mb_strtoupper($word))) {
                        # Is roman numerals? # http://stackoverflow.com/a/267405/437459
                        $word = mb_strtoupper($word);
                    }

                    $ucfirst[] = $word;
                }

                # string's first character uppercased
                $result = implode($delimiter, $ucfirst);
            }
        }

        return $result;
    }
?>