Question

In PHP, max() returns the highest value in an array or the greatest value among inputs. If we have two or more equally greatest values, how to deal with that situation?
eg

$arr = array("a"=>1,"b"=>10, "c"=>10);

now, what should max($arr), return. Ideally it returns the first encountered highest value, b. What if I want both b and c as result?

Answer 1

If you have the highest value in that array (that is, what max() returns), you can just search for all occurrences of that value in the array:

$arrOfKeys = array_keys($arr, max($arr));