how to get top 3 values in php array and their index

Question

I want to get the highest value, the second highest value and the third highest value

For example, I have an array like:

$n = array(100,90,150,200,199,

Answer 1

Easier I would think:

arsort($n);
$three = array_chunk($n, 3, true)[0];
//or
$three = array_slice($n, 0, 3, true);