anonymous_class_with_trait.php

<?php

// This example shows how to override implementations without subclassing,
// using anonymous classes and traits.

interface Animal {

	public function makeSound(): string;
	public function move(): string;
}

trait LoudAnimal {
	public function makeSound(): string {
		return strtoupper( parent::makeSound() );
	}
}

class Dog implements Animal {

	public function makeSound(): string {
		return "woof!";
	}
	public function move(): string {
		return "Running in circles";
	}
}

$loudDog = new class() extends Dog { use LoudAnimal; } ;

printf("%s\n", $loudDog->makeSound());
printf("%s\n", $loudDog->move());