Generate Random Password Joomla and PHP

The following few lines creates a random password and puts it into and md5 encrypted format to be saved in joomla database. If you are using non-encrypted password you can just use the first part, or if you are using simple md5 encryption and not looking for key:salt as joomla then you can simply take the $key from first part and encrypt it using the md5 function and store that. :)

        $key = "";
        srand((double)microtime() * rand(1000, 9999));
        $charset = "abcdefghijkmnopqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ0123456789";
        for($len=0; $len<8; $len++)
            $key .= $charset[rand(0, strlen($charset)-1)];
        //End of part 1, you will have a simple random password here in $key
        $salt = JUserHelper::genRandomPassword(32);
        $crypt = JUserHelper::getCryptedPassword($key, $salt);
        $password = $crypt . ':' . $salt;

$password will have the value that you can save into database in users table.