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 $pass;
}
如果你在PHP7上,你可以使用random_int()函数:
function generate_password($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 $str;
}
试着用大写字母,小写字母,数字和特殊字符
function generatePassword($_len) {
$_alphaSmall = 'abcdefghijklmnopqrstuvwxyz'; // small letters
$_alphaCaps = strtoupper($_alphaSmall); // CAPITAL LETTERS
$_numerics = '1234567890'; // numerics
$_specialChars = '`~!@#$%^&*()-_=+]}[{;:,<.>/?\'"\|'; // Special Characters
$_container = $_alphaSmall.$_alphaCaps.$_numerics.$_specialChars; // Contains all characters
$password = ''; // will contain the desired pass
for($i = 0; $i < $_len; $i++) { // Loop till the length mentioned
$_rand = rand(0, strlen($_container) - 1); // Get Randomized Length
$password .= substr($_container, $_rand, 1); // returns part of the string [ high tensile strength ;) ]
}
return $password; // Returns the generated Pass
}
假设我们需要10位Pass
echo generatePassword(10);
示例输出:
IZCQ_IV \ 7
@wlqsfhT (d
是1!8 + 1 \ 4 @ud
这是基于本页的另一个答案,https://stackoverflow.com/a/21498316/525649
这个答案只生成十六进制字符,0-9,a-f。对于一些看起来不像hex的东西,试试这个:
str_shuffle(
rtrim(
base64_encode(bin2hex(openssl_random_pseudo_bytes(5))),
'='
).
strtoupper(bin2hex(openssl_random_pseudo_bytes(7))).
bin2hex(openssl_random_pseudo_bytes(13))
)
Base64_encode返回更广泛的字母数字字符
Rtrim有时会在结尾删除=
例子:
32 efvfgdg891be5e7293e54z1d23110m3zu3fmjb30z9a740ej0jz4
b280R72b48eOm77a25YCj093DE5d9549Gc73Jg8TdD9Z0Nj4b98760
051年b33654c0eg201cfw0e6na4b9614ze8d2fn49e12y0zy557aucb8
y67Q86ffd83G0z00M0Z152f7O2ADcY313gD7a774fc5FF069zdb5b7
对于为用户创建界面来说,这不是很可配置的,但对于某些目的来说,这是可以的。增加字符数,以弥补特殊字符的不足。
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)