Sort keys of an array [duplicate]

Question

I have this array:

$arr = array('Stone', 'Gem', 'Star', ..., 'Star', 'Rock', 'Salt', ..., 'Metal', 'Cotton', 'Gem',...);
$array = array_count_values($arr);

So the output is like this:

Array
(
    [Stone] => 234
    [Gem] => 231
    [Star] => 123
    [Rock] => 232
)

Now I am trying to sort it alphabetically like,

[Gem] => ...
[Star] => ...
[Stone] => ...
[Rock] => ...

I tried this one:

sort($arr);
foreach($arr as $key => $value){
    echo $key.' : '.$value;
}

But the output is not what I have expected it look like this:

0 : 11 : 12 : 13 : 14 : 15 : 16 : 17 : 18 : 19 : 110 : 11 ...

Any ideas how I can correctly sort this?

@Elias given that Stack Overflow has literally hundreds of php sorting question, please be more selective to nominate a duplicate page which closely resembles the task. This question seeks sorting on the keys of a flat, associative array and your nomination demonstrates how to sort a 2d array by a column value. This is not helpful for researchers or Stack Overflow content curation. — mickmackusa
– mickmackusa ♦, Commented Feb 1 at 5:14

Om Prakash · Accepted Answer · 2015-09-16 04:19:37Z

4

Have you tried ksort() ?

ksort($arr)

print($arr)

You can get the doc over here.

answered Sep 16, 2015 at 4:19

Om Prakash

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Comments

Elon Than · Accepted Answer · 2015-09-16 04:17:25Z

0

You are sorting by keys, not values, so you should use ksort() function.

answered Sep 16, 2015 at 4:17

Elon Than

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