app\models\Setting::set PHP Метод

    public static function set($key, $value = null)
    {
        if (is_array($key)) {
            foreach ($key as $k => $v) {
                self::set($k, $v);
            }
            return;
        }
        self::updateOrCreate(compact('key'), compact('value'));
    }

 public function testGet()
 {
     Setting::set('foo', 'bar');
     Setting::set('bar', ['baz' => 'qux']);
     $this->assertEquals('bar', Setting::get('foo'));
     $this->assertEquals(['baz' => 'qux'], Setting::get('bar'));
 }