生成密码并指定多少个degints和单词[关闭]

Question

can somone help me to make this work i want to generate a password

Password Length: 15

Include Lowercase Characters Include Uppercase Characters

with one number in random position

ex:

Zs8ChnduGpkeuqx
ovephmVXD8RgcPr
VimDDE3txrVjLSe

here is what i was doing before and i wasnt sure if its the right way so i asked for help to get more informations ;)

<?php

function generateRandomString($length =14, $letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'){
    $s = '';
    $lettersLength = strlen($letters)-1;

    for($i = 0 ; $i < $length ; $i++)
    {
        $s .= $letters[rand(0,$lettersLength)];
    }

    return $s;
}

 function generateRandomNum($length =1, $letters = '0123456789'){
    $s = '';
    $lettersLength = strlen($letters)-1;

    for($i = 0 ; $i < $length ; $i++)
    {
        $s .= $letters[rand(0,$lettersLength)];
    }

    return $s;
}

function shuffled() {
$str = generateRandomString();
$num = generateRandomNum();
$tot = $str.$num;  
$s = str_shuffle($tot);

{

    return $s;
}
}

echo shuffled();
?>

thank you for your help

Answer 1

Guessing you might benefit from an answer that walked you through what was going on, rather than just giving you wanted, might be useful for you in the future.

function randomString($length) { // Generates a random string of $length characters long
    $letters = "abcdefghijklmnopqrstuwxyzABCDEFGHIJKLMNOPQRSTUWXYZ"; // Characters you don't mind having more than one of
    $random_string = '';
    for ($i = 0; $i < $length; $i++) { // Until $i = $length, do the following & increment $i by 1 each time
        $random_string .= $letters[rand(0, (strlen($letters) - 1))]; // Add another random character to the string
    }
    $random_string[rand(0, ($length - 1))] = rand(0,9); // Replace one of the characters with a random number between 0 and 9

    return $random_string;
}

echo randomString(15);