The following example illustrates how enum cases are returned.

<?php
enum Suit
{
    case Hearts;
    case Diamonds;
    case Clubs;
    case Spades;
}

var_dump(Suit::cases());

   

ENTITY

array(4) {
  [0]=>
  enum(Suit::Hearts)
  [1]=>
  enum(Suit::Diamonds)
  [2]=>
  enum(Suit::Clubs)
  [3]=>
  enum(Suit::Spades)
}