I need script that generate pin code for login to access pages

[sidofus21]

I built a site which you may access:

http:www.madonnamodelschools.com

At the foot of the site, if you click on checkresult it next you to a page that has;

Registration No:
Pin No:

So I need an admin page to generate the Pin No: that can login to check the result. Or a complete example with source code.

Thanks

[Drummin]

How and when are these numbers generated?
Where are they stored?
Alpha-numeric, Upper and lower case, just numbers?

There are many ways to do it. Here are two versions.

<?php
//Upper or Lower or Both defined with $case
function swd_rand($length = 10, $letters = true, $numbers = true, $case = 'i'){
    $chars = array();       
    if ($numbers){
        $chars = array_merge($chars, range(48, 57));
    }    
    if ($letters || !$numbers){
        $chars = array_merge($chars, range(65, 90), range(97, 122));
    }       
    for ($string = ''; strlen($string) < $length; $string .= chr($chars[array_rand($chars)]));       
    switch ($case){
        case 'i': default: return $string;
        case 'u': return strtoupper($string);
        case 'l': return strtolower($string);
    }
}

echo swd_rand(8);

echo "<br />";

//Simple lower case version
function createnumber() {
    $string = md5(uniqid(rand(), true));
    return substr($string, 0, 8);
}

echo createnumber();
?>