keep the loop going

[kproc]

Hi the below loop is supposed to keep looping through each ids. I'm stuck when it comes to the last value it $next = 1 - smallest value..

The value should be the smallest value.

any help is excellent

foreach ($ids as $key => $id) {
    if ($id == $photoId) {
        $next = ($key + 1 > (count($ids) - 1) ? $ids[0] : $ids[$key + 1]);
        break;
    }