KohanaPHP » Kohana v2.x

something simple i created, and i extended the num helper for this, so i thought it may be useful, and decided to submit it as a feature request. basicly, if you want x amount of random numbers within your range, and each number has to be unique, this will provide that for you, it needs some work, like type casting, error checking, but at least the idea is there.

    public static function unique_rand($start, $end, $amount) {
        $random = array();
        while ($amount) {
            $amount--;
            do {
                $random_num = mt_rand($start, $end);
            } while (in_array($random_num, $random));
            $random[] = $random_num;
        }
        return $random;
    }