[Resolved] Enumerating object properties?

[vitalyb]

Lets say I have an object:

$obj->a = 5;
$obj->b = 6;
$obj->c = 7;
$obj->d = 8;

Now I'd like to set all its values to 0. Is it possible to do so in a loop somehow? So I won't need to actually call for each property of the object.