Traits
Enumerations may leverage traits, which will behave the same as on classes.
The caveat is that traits used in an enum must not contain properties.
They may only include methods and static methods. A trait with properties will
result in a fatal error.
<?php
interface Colorful
{
public function color(): string;
}
trait Rectangle
{
public function shape(): string {
return "Rectangle";
}
}
enum Suit implements Colorful
{
use Rectangle;
case Hearts;
case Diamonds;
case Clubs;
case Spades;
public function color(): string
{
return match($this) {
Suit::Hearts, Suit::Diamonds => 'Red',
Suit::Clubs, Suit::Spades => 'Black',
};
}
}
?>
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