How to retrieve all maximum values from array?

Question

I need to get all maximum values from array using php.

For this array:

$arr = array('a'=>10,'b'=>20,'c'=>5,'d'=>20);

I used below code,

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

but I get only b, I need to get both b and d -- all keys with the highest value.

Possible duplicate of Return index of highest value in an array — Nawin
– Nawin, Commented Jun 29, 2017 at 13:06
Possible duplicate of PHP Get multiple highest values from array — mickmackusa
– mickmackusa ♦, Commented Jun 29, 2017 at 13:28

u_mulder · Accepted Answer · 2017-06-29 13:03:03Z

6

To find all keys use array_keys with a second parameter:

$arr = array('a'=>10,'b'=>20,'c'=>5,'d'=>20);
$key = array_keys($arr, max($arr));

By the way it is said on array_search man page)

answered Jun 29, 2017 at 13:03

u_mulder

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