Question: I've been working on code that's intended to be used with objects, without really caring what the kind of object is. I wanted to type hint that the method being written expected an object of any type, but ran into some difficulty. 

I tried `function myFunc (object $obj)` and `function myFunc (stdClass $obj)` but both of these generated errors when I tried to pass objects in: 

> 
> Catchable fatal error: Argument 1 passed to MyClass::MyFunc() must be an instance of object, instance of ObjectActualClass given
> 
> 
> 

The same happened with `stdClass` as well

What am I missing? I thought that all classes that didn't explicitly inherit from another class inherited from `stdClass`, meaning that the base class of every class in PHP would be `stdClass`. Is this not the case?

Answer: 
Although there is no type hinting for objects, you can use:

```
if (!is_object($arg)) {
    return;
}

```
You could do something like this:

```
function myFunc ($obj)
{
     if ($obj instanceof stdClass) { .... }
}

```