初始化ReflectionClass类型的php对象:: newInstanceWithoutConstructor（）

i am trying to create an object using the php Reflection class but i can't figure out how to initialize it. as shown in the following code:

          $obj = new \ReflectionClass('CLASS NAME');
          $inst = $obj->newInstanceWithoutConstructor();
          foreach($row as $key => $value){
             $obj->$key = $value;
          }
          return $obj;

i get the following error:ReflectionException: Cannot set read-only property ReflectionClass::$name