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
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!
其他回答
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)), "=");
}
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);
function password_generate($n, $l, $s)
{
$numbers = '1234567890';
$letters = '1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcefghijklmnopqrstuvwxyz';
$special = '--!=!@@#++%';
return substr(str_shuffle($numbers), 0, $n).substr(str_shuffle($letters), 0, $l).substr(str_shuffle($special), 0, $s);
}
echo password_generate(2,9,1);
//define a function. It is only 3 lines!
function generateRandomPassword($length = 5){
$chars = "0123456789bcdfghjkmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ";
return substr(str_shuffle($chars),0,$length);
}
//usage
echo generateRandomPassword(5); //random password legth: 5
echo generateRandomPassword(6); //random password legth: 6
echo generateRandomPassword(7); //random password legth: 7
一个简单的代码应该是这样的:
function generatePassword($len){
$az = range("a","z");
$AZ = range("A","Z");
$num = range(0,9);
$password = array_merge($az,$AZ,$num);
return substr(str_shuffle(implode("",$password)),0, $len);
}
// testing
$generate = range(8,32);
foreach($generate as $g){
print "Len:{$g} = " . generatePassword($g)."\n";
}
输出:
Len:8 = G5uFhPKS
Len:9 = aU9x2NjvI
Len:10 = lJE9kxy3oD
Len:11 = tVh2CmpMdHW
Len:12 = ToXYHCPb58Ar
Len:13 = KIFVoLg5NdDzX
Len:14 = eFUabML28tXhf0
Len:15 = iegDCQcIMaxH0ST
Len:16 = sRvDmPo5IkaMqNO0
Len:17 = T5rwVDs6XGAqSU9KN
Len:18 = QwROWAfh1lpoCSaX0H
Len:19 = HP0trD4B9SQeUkNuAGV
Len:20 = P9Fdwqmu782ARHDiKGZM
Len:21 = 3Gxia9LPmCZM68dwe4YOf
Len:22 = ywFjuA2GDg0Oz8LVnCI94M
Len:23 = 16MiEVUgqPRueahlyvJfBz5
Len:24 = sPt0H9NSu5KrJTYeMXbOFgi7
Len:25 = QFKGTypaZlsMRnHPgNbVfIwxm
Len:26 = hbyJXtV81AEuMazS4GdFTINBUg
Len:27 = H3AiD95S4Z8xwMrz2L71GqUunaW
Len:28 = m8W2geIiO7Phc3H5Kyr1XCAs09Dv
Len:29 = MusNfYgOWnbrI62twRBvj38XEcDdi
Len:30 = VgNeILaRT2wvb4J7hzCMSHsquUBtnA
Len:31 = nhUvCxgOS94dsYjzBtcaTou1WIArMQP
Len:32 = AFSVQqCijuPMp0cGJNdDtzYX78erKB9w
