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
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 $rand;
}
}
用法:
PasswordHelper::generatePassword()或PasswordHelper::generatePassword(2,4,5,3)
其他回答
如果你在PHP7上，你可以使用random_int()函数:
function generate_password($length = 20){
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.
'0123456789`-=~!@#$%^&*()_+,./<>?;:[]{}\|';
$str = '';
$max = strlen($chars) - 1;
for ($i=0; $i < $length; $i++)
$str .= $chars[random_int(0, $max)];
return $str;
}
旧答案如下:
function generate_password($length = 20){
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.
'0123456789`-=~!@#$%^&*()_+,./<>?;:[]{}\|';
$str = '';
$max = strlen($chars) - 1;
for ($i=0; $i < $length; $i++)
$str .= $chars[mt_rand(0, $max)];
return $str;
}
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);
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($g)."\n";
}
输出:
Len:8 = G5uFhPKS
Len:9 = aU9x2NjvI
Len:10 = lJE9kxy3oD
Len:11 = tVh2CmpMdHW
Len:12 = ToXYHCPb58Ar
Len:13 = KIFVoLg5NdDzX
Len:14 = eFUabML28tXhf0
Len:15 = iegDCQcIMaxH0ST
Len:16 = sRvDmPo5IkaMqNO0
Len:17 = T5rwVDs6XGAqSU9KN
Len:18 = QwROWAfh1lpoCSaX0H
Len:19 = HP0trD4B9SQeUkNuAGV
Len:20 = P9Fdwqmu782ARHDiKGZM
Len:21 = 3Gxia9LPmCZM68dwe4YOf
Len:22 = ywFjuA2GDg0Oz8LVnCI94M
Len:23 = 16MiEVUgqPRueahlyvJfBz5
Len:24 = sPt0H9NSu5KrJTYeMXbOFgi7
Len:25 = QFKGTypaZlsMRnHPgNbVfIwxm
Len:26 = hbyJXtV81AEuMazS4GdFTINBUg
Len:27 = H3AiD95S4Z8xwMrz2L71GqUunaW
Len:28 = m8W2geIiO7Phc3H5Kyr1XCAs09Dv
Len:29 = MusNfYgOWnbrI62twRBvj38XEcDdi
Len:30 = VgNeILaRT2wvb4J7hzCMSHsquUBtnA
Len:31 = nhUvCxgOS94dsYjzBtcaTou1WIArMQP
Len:32 = AFSVQqCijuPMp0cGJNdDtzYX78erKB9w
Generates a strong password of length 8 containing at least one lower case letter, one uppercase letter, one digit, and one special character. You can change the length in the code too. function checkForCharacterCondition($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>'; $j++; return generate_pass(); } } echo generate_pass();
以下是我对选项列表的贡献。
该功能可以确保密码策略被满足。
function password_generate($length=8, $min_lowercases=1, $min_uppercases=1, $min_numbers=1, $min_specials=0) {
$lowercases = 'abcdefghijklmnopqrstuvwxyz';
$uppercases = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$numbers = '0123456789';
$specials = '!#%&/(){}[]+-';
$absolutes = '';
if ($min_lowercases && !is_bool($min_lowercases)) $absolutes .= substr(str_shuffle(str_repeat($lowercases, $min_lowercases)), 0, $min_lowercases);
if ($min_uppercases && !is_bool($min_uppercases)) $absolutes .= substr(str_shuffle(str_repeat($uppercases, $min_uppercases)), 0, $min_uppercases);
if ($min_numbers && !is_bool($min_numbers)) $absolutes .= substr(str_shuffle(str_repeat($numbers, $min_numbers)), 0, $min_numbers);
if ($min_specials && !is_bool($min_specials)) $absolutes .= substr(str_shuffle(str_repeat($specials, $min_specials)), 0, $min_specials);
$remaining = $length - strlen($absolutes);
$characters = '';
if ($min_lowercases !== false) $characters .= substr(str_shuffle(str_repeat($lowercases, $remaining)), 0, $remaining);
if ($min_uppercases !== false) $characters .= substr(str_shuffle(str_repeat($uppercases, $remaining)), 0, $remaining);
if ($min_numbers !== false) $characters .= substr(str_shuffle(str_repeat($numbers, $remaining)), 0, $remaining);
if ($min_specials !== false) $characters .= substr(str_shuffle(str_repeat($specials, $remaining)), 0, $remaining);
$password = str_shuffle($absolutes . substr($characters, 0, $remaining));
return $password;
}
参数$min_*可以有以下值:
1-999 =需要 True =可选 False =禁用
它可以像下面这样使用:
echo password_generate(8); // Outputs a random 8 characters long password
10个字符的密码，每组至少有2个字符:
echo password_generate(10, 2, 2, 2, 2);
只输出6个随机数
echo password_generate(6, false, false, true, false);
