use Aymane\Roar\Container;

// Create a new instance of container
$container = new Container();

// Register your service using a simple closure
$container->add('foo', function() {
    return new Foo();
});

// Or share it (like a singleton!)
$container->share('bar', function() {
    return new Bar();
});

// Then use it!
$foo = $container->get('foo');
$bar = $container->get('bar');

// registering service...
$foo1 = $container->get('foo');
$foo2 = $container->get('foo');

var_dump($foo1 === $foo2); // will return false

// registering service...
$bar1 = $container->get('bar');
$bar2 = $container->get('bar');

var_dump($bar1 === $bar2); // will return true