例
2
1、在 33 – 126 中生成一个随机整数,如 35,
2、将 35 转换成对应的 ASCII 码字符,如 35 对应 #
3、重复以上 1、2 步骤 n 次,连接成 n 位的密码
代码如下
:
function create_password($pw_length = 8)
{
$randpwd = '';
for ($i = 0; $i < $pw_length; $i++)
{
$randpwd .= chr(mt_rand(33, 126));
}
return $randpwd;
}
// 调用该函数,传递长度参数$pw_length = 6
echo create_password(6);
实例
代码如下
:
<?php
mt_srand((double) microtime() * 1000000);
function gen_random_password($password_length = 32, $generated_password = ""){
$valid_characters
=
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$chars_length = strlen($valid_characters) - 1;
for($i = $password_length; $i--; ) {
//$generated_password .= $valid_characters[mt_rand(0, $chars_length)];
$generated_password .= substr($valid_characters, (mt_rand()%(strlen($valid_characters))), 1);
}
return $generated_password;
}
?><!DOCTYPE
HTML
PUBLIC
"-//W3C//DTD
HTML
4.01
Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>php 密码生成器 v 4.0</title>
<style type="text/css">
body {
font-family: Arial;
font-size: 10pt;
}
</style>