PHP Sort a multidimensional array by number of items

Question

I have an array such as:

Array
(
    [DEF] => Array
        (
            [0] => Array
                (
                    [type] => 1
                    


        

Answer 1

$tempArr = $sortedArr = array();
foreach ($myArr as $k => $v) $tempArr[$k] = count($v);
asort($tempArr);
foreach ($tempArr as $k => $v) $sortedArr = $myArr[$k];

Note that this will break if any of the array values are not themselves arrays, you may want to add an is_array() check somewhere...