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

Another solution using array_multisort:

$keys = array_map('strlen', array_keys($arr));
array_multisort($keys, SORT_DESC, $arr);

Here $keys is an array of the lengths of the keys of $arr. That array is sorted in descending order and then used to sort the values of $arr using array_multisort.