What is Setter and Property Injection in Yii framework?

Yii framework - Interview Questions

Setter and property injection is supported through configurations. When registering a dependency or when creating a new object, you can provide a configuration which will be used by the container to inject the dependencies through the corresponding setters or properties.

For example :

use yii\base\BaseObject;

class Foo extends BaseObject
{
    public $bar;

    private $_qux;

    public function getQux()
    {
        return $this->_qux;
    }

    public function setQux(Qux $qux)
    {
        $this->_qux = $qux;
    }
}

$container->get('Foo', [], [
    'bar' => $container->get('Bar'),
    'qux' => $container->get('Qux'),
]);