How to Generate Random Password in Codeigniter for forgot password ?

Passwords. Used everywhere, passwords can also be a part of your Codeigniter application. So they are a part of InvoicePlane, that is based on Codeigniter. To provide password suggestions for the installation process I thought about a simple yet secure solution.

/**
 * Generates a random password
 * @return string
**/
function randomPassword() {
        $alphabet = "abcdefghijklmnopqrstuwxyzABCDEFGHIJKLMNOPQRSTUWXYZ0123456789";
        $pass = array(); //remember to declare $pass as an array
        $alphaLength = strlen($alphabet) - 1; //put the length -1 in cache
        for ($i = 0; $i < 8; $i++) {
            $n = rand(0, $alphaLength);
            $pass[] = $alphabet[$n];
        }
        return implode($pass); //turn the array into a string
}

Or

/**
 * Generates a random password
 * @return string
**/
function generate_password_suggestion()
{
    $chars = "abcdefghijklmnpqrstuvwxyzABCDEFGIHJKLMNPQRSTUVWXYZ123456789-_";
    $suggestion = substr(str_shuffle($chars), 0, 12);
    return $suggestion;
}

Nguồn : Sưu tập