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 $pass;
}
当前回答
一个简单的代码应该是这样的:
function generatePassword($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($g)."\n";
}
输出:
Len:8 = G5uFhPKS
Len:9 = aU9x2NjvI
Len:10 = lJE9kxy3oD
Len:11 = tVh2CmpMdHW
Len:12 = ToXYHCPb58Ar
Len:13 = KIFVoLg5NdDzX
Len:14 = eFUabML28tXhf0
Len:15 = iegDCQcIMaxH0ST
Len:16 = sRvDmPo5IkaMqNO0
Len:17 = T5rwVDs6XGAqSU9KN
Len:18 = QwROWAfh1lpoCSaX0H
Len:19 = HP0trD4B9SQeUkNuAGV
Len:20 = P9Fdwqmu782ARHDiKGZM
Len:21 = 3Gxia9LPmCZM68dwe4YOf
Len:22 = ywFjuA2GDg0Oz8LVnCI94M
Len:23 = 16MiEVUgqPRueahlyvJfBz5
Len:24 = sPt0H9NSu5KrJTYeMXbOFgi7
Len:25 = QFKGTypaZlsMRnHPgNbVfIwxm
Len:26 = hbyJXtV81AEuMazS4GdFTINBUg
Len:27 = H3AiD95S4Z8xwMrz2L71GqUunaW
Len:28 = m8W2geIiO7Phc3H5Kyr1XCAs09Dv
Len:29 = MusNfYgOWnbrI62twRBvj38XEcDdi
Len:30 = VgNeILaRT2wvb4J7hzCMSHsquUBtnA
Len:31 = nhUvCxgOS94dsYjzBtcaTou1WIArMQP
Len:32 = AFSVQqCijuPMp0cGJNdDtzYX78erKB9w
其他回答
Generates a strong password of length 8 containing at least one lower case letter, one uppercase letter, one digit, and one special character. You can change the length in the code too. function checkForCharacterCondition($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();
2行的小代码。
演示:http://codepad.org/5rHMHwnH
function rand_string( $length ) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
return substr(str_shuffle($chars),0,$length);
}
echo rand_string(8);
使用rand_string，您可以定义将创建多少字符。
如果你在PHP7上，你可以使用random_int()函数:
function generate_password($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;
}
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)), "=");
}
