如何用PHP生成随机密码? [英] How to generate random password with PHP?

问题描述

还是有自动生成随机密码的软件?

Or is there a software to auto generate random passwords?

推荐答案

只需构建一个随机的a-z，A-Z，0-9(或您想要的)字符串，直到所需的长度.这是PHP中的示例:

Just build a string of random a-z, A-Z, 0-9 (or whatever you want) up to the desired length. Here's an example in PHP:

function generatePassword($length = 8) {
    $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
    $count = mb_strlen($chars);

    for ($i = 0, $result = ''; $i < $length; $i++) {
        $index = rand(0, $count - 1);
        $result .= mb_substr($chars, $index, 1);
    }

    return $result;
}

为进行优化，如果一次执行将多次调用此函数，则可以在方法(或父类)中将$chars定义为静态变量或常量.

To optimize, you can define $chars as a static variable or constant in the method (or parent class) if you'll be calling this function many times during a single execution.

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