How to sort a multidimensional array by two parameters at once?

Question

PHP

Please tell me how to sort an array like this:

array(3) {
    ["beta"]=> array(4) {
      ["b"]=> string(1) "..."
      ["c"]=> string(1) "..."
      ["a"]=> string(1) "..."
      ["d"]=> string(1) "..."
    }
    ["alpha"]=> array(4) {
      ["d"]=> string(1) "..."
      ["c"]=> string(1) "..."
      ["b"]=> string(1) "..."
      ["a"]=> string(1) "..."
    }
    ["gamma"]=> array(4) {
      ["c"]=> string(1) "..."
      ["d"]=> string(1) "..."
      ["a"]=> string(1) "..."
      ["b"]=> string(1) "..."
    }

In this one:

array(3) {
    ["alpha"]=> array(4) {
      ["a"]=> string(1) "..."
      ["b"]=> string(1) "..."
      ["c"]=> string(1) "..."
      ["d"]=> string(1) "..."
    }
    ["beta"]=> array(4) {
      ["a"]=> string(1) "..."
      ["b"]=> string(1) "..."
      ["c"]=> string(1) "..."
      ["d"]=> string(1) "..."
    }
    ["gamma"]=> array(4) {
      ["a"]=> string(1) "..."
      ["b"]=> string(1) "..."
      ["c"]=> string(1) "..."
      ["d"]=> string(1) "..."
    }
  }

I tried to figure out the uasort function, but it didn't work because of the unknown names of the array elements. Many thanks in advance for your help.

Answer 1

Well, you can use the ksort function;

ksort($array);
foreach($array as $key=>$value) {
    ksort($array[$key]);
}

Answer 2

What about nested loops?