我试图在php中生成一个随机密码。

但是我得到的都是'a'返回类型是数组类型,我希望它是字符串。对如何修改代码有什么想法吗?

谢谢。

function randomPassword() {
    $alphabet = "abcdefghijklmnopqrstuwxyzABCDEFGHIJKLMNOPQRSTUWXYZ0123456789";
    for ($i = 0; $i < 8; $i++) {
        $n = rand(0, count($alphabet)-1);
        $pass[$i] = $alphabet[$n];
    }
    return $pass;
}

当前回答

该函数将根据参数中的规则生成密码

function random_password( $length = 8, $characters = true, $numbers = true, $case_sensitive = true, $hash = true ) {

    $password = '';

    if($characters)
    {
        $charLength = $length;
        if($numbers) $charLength-=2;
        if($case_sensitive) $charLength-=2;
        if($hash) $charLength-=2;
        $chars = "abcdefghijklmnopqrstuvwxyz";
        $password.= substr( str_shuffle( $chars ), 0, $charLength );
    }

    if($numbers)
    {
        $numbersLength = $length;
        if($characters) $numbersLength-=2;
        if($case_sensitive) $numbersLength-=2;
        if($hash) $numbersLength-=2;
        $chars = "0123456789";
        $password.= substr( str_shuffle( $chars ), 0, $numbersLength );
    }

    if($case_sensitive)
    {
        $UpperCaseLength = $length;
        if($characters) $UpperCaseLength-=2;
        if($numbers) $UpperCaseLength-=2;
        if($hash) $UpperCaseLength-=2;
        $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        $password.= substr( str_shuffle( $chars ), 0, $UpperCaseLength );
    }

    if($hash)
    {
        $hashLength = $length;
        if($characters) $hashLength-=2;
        if($numbers) $hashLength-=2;
        if($case_sensitive) $hashLength-=2;
        $chars = "!@#$%^&*()_-=+;:,.?";
        $password.= substr( str_shuffle( $chars ), 0, $hashLength );
    }

    $password = str_shuffle( $password );
    return $password;
}

其他回答

我知道您正在尝试以特定的方式生成密码,但您可能也想看看这个方法……

$bytes = openssl_random_pseudo_bytes(2);

$pwd = bin2hex($bytes);

它取自php.net站点,它创建了一个字符串,长度是您在openssl_random_pseudo_bytes函数中输入的数字的两倍。因此,上面的代码将创建一个长度为4个字符的密码。

总之……

$pwd = bin2hex(openssl_random_pseudo_bytes(4));

会创建一个8个字符长的密码。

但是请注意,密码只包含数字0-9和小写字母a-f!

该函数将根据参数中的规则生成密码

function random_password( $length = 8, $characters = true, $numbers = true, $case_sensitive = true, $hash = true ) {

    $password = '';

    if($characters)
    {
        $charLength = $length;
        if($numbers) $charLength-=2;
        if($case_sensitive) $charLength-=2;
        if($hash) $charLength-=2;
        $chars = "abcdefghijklmnopqrstuvwxyz";
        $password.= substr( str_shuffle( $chars ), 0, $charLength );
    }

    if($numbers)
    {
        $numbersLength = $length;
        if($characters) $numbersLength-=2;
        if($case_sensitive) $numbersLength-=2;
        if($hash) $numbersLength-=2;
        $chars = "0123456789";
        $password.= substr( str_shuffle( $chars ), 0, $numbersLength );
    }

    if($case_sensitive)
    {
        $UpperCaseLength = $length;
        if($characters) $UpperCaseLength-=2;
        if($numbers) $UpperCaseLength-=2;
        if($hash) $UpperCaseLength-=2;
        $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        $password.= substr( str_shuffle( $chars ), 0, $UpperCaseLength );
    }

    if($hash)
    {
        $hashLength = $length;
        if($characters) $hashLength-=2;
        if($numbers) $hashLength-=2;
        if($case_sensitive) $hashLength-=2;
        $chars = "!@#$%^&*()_-=+;:,.?";
        $password.= substr( str_shuffle( $chars ), 0, $hashLength );
    }

    $password = str_shuffle( $password );
    return $password;
}

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)), "=");
}

Create a file with this code in it. Call it like in the comments. <?php /** * @usage : * include_once($path . '/Password.php'); * $Password = new Password; * $pwd = $Password->createPassword(10); * return $pwd; * */ class Password { public function createPassword($length = 15) { $response = []; $response['pwd'] = $this->generate($length); $response['hashPwd'] = $this->hashPwd( $response['pwd'] ); return $response; } private function generate($length = 15) { $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*(){}/?,><"; return substr(str_shuffle($chars),0,$length); } private function hashPwd($pwd) { return hash('sha256', $pwd); } } ?>