在数组列表中搜索变量内容

Question

I have 4 strings with numbers like this:

$num1 = 0;
$num2 = 3;
$num3 = 3;
$num4 = 0;

Then I get the higher number:

$higher = max($num1, $num2, $num3, $num4);

So I get "$higher = 3"

Then I create an array with the owner of the number and the number itself like this:

$arr = array("user1" => $num1, "user2" => $num2, "user3" => $num3, "user4" => $num4);

Now my issue:

I would like to search my array $arr for the value $higher (3 in this case) and get the "user2" and "user3" as return.

How can I do that?

Thanks a lot.

Answer 1

You can use array_search to search an array by value and get the associated key.

$key = array_search($higher,$arr);