Setting object property via Query String

Is it possible to set a public object property via query string. For example if I have the following object

$object->property;

and the property is set to public, is it possible for a hacker to set the property via query string?

 

No, it is not possible, if you have not left some holes in your code.

 

by holes do you mean as long as I do not assign a variable in the script to the property?

 

Yes, you are right. And I hope globals are turned off on your server, as potentialy this can also be a hole.

 

Yes they are. I guess using objects does have some advantages. Thanks for your help.