How to get all values of an enum in PHP?

PHP 8.1 is almost getting released, including support for Enumerations. I was testing some of the enum functionality and couldn't find much documentation about it. Hence my question: how do I get all values of an enum?

For basic enums:

$suits = array_column(Suit::cases(), 'name');

For backed enums where you want the values:

$suits = array_column(Suit::cases(), 'value');

You could then do something like this:

trait EnumToArray
{

  public static function names(): array
  {
    return array_column(self::cases(), 'name');
  }

  public static function values(): array
  {
    return array_column(self::cases(), 'value');
  }

  public static function array(): array
  {
    return array_combine(self::values(), self::names());
  }

}

enum Suit: string
{

  use EnumToArray;

  case Hearts = 'H';
  case Diamonds = 'D';
  case Clubs = 'C';
  case Spades = 'S';

}

Suit::array() will return:

Array
(
    [H] => Hearts
    [D] => Diamonds
    [C] => Clubs
    [S] => Spades
)