PHP Magic Methods Program (2)

index.php

<?php 

class Dog {
	public $name;
	public $data = [];
	public function bark() {
		echo "Bark! <br />";
	}
	public function __set($key, $value) {
		$this->data[$key] = $value;
	}
	public function __get($key) {
		if(array_key_exists($key, $this->data)) {
			return $this->data[$key];
		} else {
			trigger_error("Your key and value does not set", E_USER_ERROR);
		}
	}

}

$dog = new Dog();
$dog->name = "Aung Net";
$dog->color = "Black";
echo $dog->color;

?>