下面是另一个密码生成器代码片段。 控制长度，数字和特殊字符计数和列表。

其他解决方案的一个问题是，它们没有包含重复字符的选项。而下面的脚本也可以做到这一点。

$length = random_int(30, 40);

$pass = [];

$lowers = range('a', 'z');
$uppers = range('A', 'Z');
$digits = range('0', '9');
$specials = ['.', '-', '_', '^', '#', '(', ')'];

$specialCount = random_int(1, 5);
$digitCount = random_int(1, 9);

for ($i = 0; $i < $length - $specialCount - $digitCount; $i++) { 
    $pass[] = random_int(1, PHP_INT_MAX) % 2 == 0 ? $uppers[array_rand($uppers)] : $lowers[array_rand($lowers)];
}
for ($i = 0; $i < $specialCount; $i++) { 
    $pass[] = $specials[array_rand($specials)];
}
for ($i = 0; $i < $digitCount; $i++) { 
    $pass[] = $digits[array_rand($digits)];
}

shuffle($pass)

$pass = implode('', $pass);

Generates a strong password of length 8 containing at least one lower case letter, one uppercase letter, one digit, and one special character. You can change the length in the code too. function checkForCharacterCondition($string) { return (bool) preg_match('/(?=.*([A-Z]))(?=.*([a-z]))(?=.*([0-9]))(?=.*([~`\!@#\$%\^&\*\(\)_\{\}\[\]]))/', $string); } $j = 1; function generate_pass() { global $j; $allowedCharacters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ~`!@#$%^&*()_{}[]'; $pass = ''; $length = 8; $max = mb_strlen($allowedCharacters, '8bit') - 1; for ($i = 0; $i < $length; ++$i) { $pass .= $allowedCharacters[random_int(0, $max)]; } if (checkForCharacterCondition($pass)){ return '<br><strong>Selected password: </strong>'.$pass; }else{ echo 'Iteration '.$j.': <strong>'.$pass.'</strong> Rejected<br>'; $j++; return generate_pass(); } } echo generate_pass();

使用这个简单的代码生成med-strong密码长度为12

$password_string = '!@#$%*&abcdefghijklmnpqrstuwxyzABCDEFGHJKLMNPQRSTUWXYZ23456789';
$password = substr(str_shuffle($password_string), 0, 12);

下面是我对随机密码生成助手的看法。

它确保密码包含数字，大写字母和小写字母，以及至少3个特殊字符。

密码长度为11 ~ 30。

function plainPassword(): string
{
    $numbers = array_rand(range(0, 9), rand(3, 9));
    $uppercase = array_rand(array_flip(range('A', 'Z')), rand(2, 8));
    $lowercase = array_rand(array_flip(range('a', 'z')), rand(3, 8));
    $special = array_rand(array_flip(['@', '#', '$', '!', '%', '*', '?', '&']), rand(3, 5));

    $password = array_merge(
        $numbers,
        $uppercase,
        $lowercase,
        $special
    );

    shuffle($password);

    return implode($password);
}

另一个(仅限linux)

function randompassword()
{
    $fp = fopen ("/dev/urandom", 'r');
    if (!$fp) { die ("Can't access /dev/urandom to get random data. Aborting."); }
    $random = fread ($fp, 1024); # 1024 bytes should be enough
    fclose ($fp);
    return trim (base64_encode ( md5 ($random, true)), "=");
}

这是我的密码助手

class PasswordHelper
{
    /**
    * generate a secured random password
    */
    public static function generatePassword(
        int $lowerCaseCount=8, 
        int $upperCaseCount=8, 
        int $numberCount=8, 
        int $specialCount=4
    ): string
    {
        $lowerCase  = 'abcdefghijklmnopqrstuvwxyz';
        $upperCase  = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $number     = '0123456789';
        $special    = '!@#$%^&*';

        $password = self::getRandom($lowerCase, $lowerCaseCount);
        $password .= self::getRandom($upperCase, $upperCaseCount);
        $password .= self::getRandom($number, $numberCount);
        $password .= self::getRandom($special, $specialCount);

        return str_shuffle($password);
    }

    /**
     * get a random string from a set of characters
     */
    public static function getRandom($set, $length): string
    {
        $rand = '';
        $setLength = strlen($set);

        for ($i = 0; $i < $length; $i++)
        {
            $rand .= $set[random_int(0, $setLength - 1)];
        }

        return $rand;
    }
}

用法:

PasswordHelper::generatePassword()或PasswordHelper::generatePassword(2,4,5,3)