PHP - sort hash array by key length

Question

I\'ve found a few answers to sorting by value, but not key.

What I\'d like to do is a reverse sort, so with:

    $nametocode[\'reallylongname\']=\'12         


        

Answer 1

To absolutely use uksort you can do like this:

$nametocode['reallylongname']='12';
$nametocode['name']='17';
$nametocode['shortname']='10';
$nametocode['mediumname']='11';

uksort($nametocode, function($a, $b) {
   return strlen($a) - strlen($b);
});

array_reverse($nametocode, true);

Output:

Array
(
   [reallylongname] => 12
   [mediumname] => 11
   [shortname] => 10
   [name] => 17
)

I have tested this code.