Php random fill range

I have this:

$numbers = range(1,52);
shuffle($numbers);

foreach($users as $user) {

    $uniqueRand = array_pop($numbers);

}

This give each user in my database a unique random number.

I have 15 users in total, is it somehow possible to fill the rest of the range from 1-32 and repeat the randoming so to say.

it looks like this now:

1   -  24
2   -  26
3   -  2
4   -  6
5   -  8
6   -  31
7   -  25
8   -  16
9   -  13
10  -  21
11  -  19
12  -  29
13  -  8
14  -  4
15  -  6

Just users with random numbers, is it possible the give those numbers which were not allocated to a user in the range again randomly a user until all numbers in the range are given?