| --TEST-- | |
| Backed Enum implements | |
| --FILE-- | |
| interface Colorful { | |
| public function color(): string; | |
| } | |
| enum Suit: string implements Colorful { | |
| case Hearts = 'H'; | |
| case Diamonds = 'D'; | |
| case Clubs = 'C'; | |
| case Spades = 'S'; | |
| public function color(): string { | |
| return match ($this) { | |
| self::Hearts, self::Diamonds => 'Red', | |
| self::Clubs, self::Spades => 'Black', | |
| }; | |
| } | |
| } | |
| echo Suit::Hearts->color() . "\n"; | |
| echo Suit::Diamonds->color() . "\n"; | |
| echo Suit::Clubs->color() . "\n"; | |
| echo Suit::Spades->color() . "\n"; | |
| --EXPECT-- | |
| Red | |
| Red | |
| Black | |
| Black | |