How to take the minimum numbers from an array PHP

Question

I have a problem with retrieving numbers from an array, For eg, I will have an array like this

[20, 25, 40, 50, 30, 45, 33, 25]

I would like to retrieve the first 3 minimum numbers from the array. Neither too big nor too small and not to be duplicated For eg ouput will be

[20, 25, 30]

Answer 1

You can use like this way

 $input = [20, 25, 40, 50, 30, 45, 33, 25 , 20];
    $uniq = array_unique($input);
    sort($uniq);
    return  array_slice($uniq, 0, 3);