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
2行的小代码。
演示:http://codepad.org/5rHMHwnH
function rand_string( $length ) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
return substr(str_shuffle($chars),0,$length);
}
echo rand_string(8);
使用rand_string，您可以定义将创建多少字符。
其他回答
生成随机密码字符串
function generate_randompassword($passlength = 8){
$alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789@#%^*>\$@?/[]=+';
$pass = array(); //remember to declare $pass as an array
$alphaLength = strlen($alphabet) - 1; //put the length -1 in cache
for ($i = 0; $i < $passlength; $i++) {
$n = rand(0, $alphaLength);
$pass[] = $alphabet[$n];
}
return implode($pass); //turn the array into a string
}
Create a file with this code in it. Call it like in the comments. <?php /** * @usage : * include_once($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', $pwd); } } ?>
聪明一点:
function strand($length){
if($length > 0)
return chr(rand(33, 126)) . strand($length - 1);
}
点击这里在线查看。
我创建了一个更全面、更安全的密码脚本。这将创建两个大写字母、两个小写字母、两个数字和两个特殊字符的组合。总共8个字符。
$char = [range('A','Z'),range('a','z'),range(0,9),['*','%','$','#','@','!','+','?','.']];
$pw = '';
for($a = 0; $a < count($char); $a++)
{
$randomkeys = array_rand($char[$a], 2);
$pw .= $char[$a][$randomkeys[0]].$char[$a][$randomkeys[1]];
}
$userPassword = str_shuffle($pw);
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)), "=");
}
