Question

What should I put into class to be able to do so?

$data = array(
 'a' => 12345,
 'b' => 67890,
);

$object = new Class($data);

echo $object->a; //outputs 12345
echo $object->b; //outputs 67890

Answer 1

class A {
    private $data;

    public function __get($key) {
        return isset($this -> data[$key]) ? $this -> data[$key] : false;
    } 

    public function __construct(array $data) {
        $this -> data = $data;
    }
}