PHP: how to sort an array by keys numerically?

Question

Even though I have read the PHP documentation and this looks like to be a FAQ, it's still giving me some headache.

I have an array like this which holds the months of the year:

[12] => december
 [4] => april
 [3] => march
 [6] => june
 [7] => july
[10] => october

...and so on

The order is not as it should be. I want to reorder the keys numerically. I can swap the keys with values if I want, but while each numerical value will match the corresponding month, they will never be in order. So I thought of putting these in order via PHP.

I have tried with $calendar = ksort( $myarray );

But If I try to print $calendar, I will only get bool=true or array with a single key and "1" as value... I was planning to use the ksort result in a foreach later, but I can't.

What I'm droing wrong?

Answer 1

No .. just use:

ksort($myarray);
print_r($myarray)

Codepad example

ksort() sorts an array by key, maintaining key to data correlations, returns TRUE on success or FALSE on failure, if you associate the $calendar with ksort() you will have what ksort returns.

Answer 2

ksort($arr);
foreach ($arr as $key => $val) 
{ 
   echo "$key = $val\n";
}