PHP funkce pro generování hesel

<?php

function password_smart($length = 8) {
    $vowels = 'aeiou';
    $consonants = 'bdghjlmnpqrstvwx';
    $password = '';
    mt_srand((double)microtime() * 1000000);
    $alt = mt_rand() % 2;
    $number = mt_rand() % $length;
    for ($i = 0; $i < $length; $i++) {
        if ($number == $i) {
            $password .= mt_rand() % 9;
        } else if ($alt == 1) {
            $password .= $consonants[(mt_rand() % strlen($consonants))];
            $alt = 0;
        } else {
            $password .= $vowels[(mt_rand() % strlen($vowels))];
            $alt = 1;
        }
    }
    return $password;
}

function password_brutal($length = 8, $upper = 2, $digit = 1, $spec = 1) {
    mt_srand((double)microtime() * 1000000);
    $count = $length;
    $sp = '!"#$%&' . "'" . '()*+,-./:;<=>?@[\]^_`{|}~';
    $up = !$upper;
    $password = str_repeat(' ', $length);
    // spec
    while ($count && $spec) {
        $i = mt_rand() % $length;
        if ($password[$i] == ' ') {
            $password[$i] = $sp[mt_rand() % strlen($sp)];
            $spec--;
            $count--;
        }
    }
    // digit
    while ($count && $digit) {
        $i = mt_rand() % $length;
        if ($password[$i] == ' ') {
            $password[$i] = chr(mt_rand(ord('0'), ord('9')));
            $digit--;
            $count--;
        }
    }
    // upper
    while ($count && $upper) {
        $i = mt_rand() % $length;
        if ($password[$i] == ' ') {
            $password[$i] = chr(mt_rand(ord('A'), ord('Z')));
            $upper--;
            $count--;
        }
    }
    // other
    for ($i = 0; $i < $length; $i++) {
        if ($password[$i] == ' ') {
            $a = ord($up && mt_rand(0, 1) ? 'A' : 'a');
            $password[$i] = chr(mt_rand($a, $a + 25));
        }
    }
    return $password;
}