PHP Strategy Pattern Example 2

strategy2

<?php

interface AnimalInterface{
	public function run();
}

class Dog implements AnimalInterface{

	public function run()
	{
		return 'running while barking';
	}
}

class Cat implements AnimalInterface{

	public function run()
	{
		return 'running while meowing';
	}
}


class Animal{
	protected $animal;
	public function __construct(AnimalInterface $animal)
	{
		$this->animal = $animal;
	}
	
	public function run()
	{
		return $this->animal->run();
	}
}


$dog = new Animal(new Dog());
echo $dog->run();
?>