Is it really useful to have ordered map as the "only" collection type?

I guess it might be Stockholm syndrome - but I'm quite comfortable with a "list/array" type (numeric keys, ordered) and a "map/hash_map" type (objects as keys).

Especially give that with phps "power" you can:

  $array = array(
    1    => "a",
    "1"  => "b",
    1.5  => "c",
    true => "d",
  );
  var_dump($array);

Ouputs:

  array(1) {
    [1]=>
    string(1) "d"
  }

https://www.php.net/manual/en/language.types.array.php