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retrieveing the zval pointer of an "object"

php.internals

Michael Wallner

22 years ago

Hi,

I have an hopefully simple question;
imagine the following statement:

obj = (struct obj_struct *) zend_object_store_get_object(zval TSRMLS_CC);


Ok, now I'm in a situation where I'd need the other way
round, i.e. a way to fetch the zval of the obj I've got
(i.e. I have "obj" and need "zval").

Any hints?

Thanks,

--
Michael - < mike(@)php.net >

Andrey Hristov

22 years ago

isn't the situation that several zvals can reference one object?

Andrey

Michael Wallner wrote:

Michael Wallner

22 years ago

Hi Andrey Hristov, you wrote:

> isn't the situation that several zvals can reference one object?

Should this be read as "No way, sorry"? :)

Regards,

--
Michael - < mike(@)php.net >

Andrey Hristov

22 years ago

The engine gurus have the final word :)

Andrey

Michael Wallner wrote:

Andrei Zmievski

22 years ago

On Fri, 27 Aug 2004, Michael Wallner wrote:

> Hi,
>
> I have an hopefully simple question;
> imagine the following statement:
>
> obj = (struct obj_struct *) zend_object_store_get_object(zval TSRMLS_CC);
>
>
> Ok, now I'm in a situation where I'd need the other way
> round, i.e. a way to fetch the zval of the obj I've got
> (i.e. I have "obj" and need "zval").
>
> Any hints?

The main question is: why do you need to do it?

- Andrei

Michael Wallner

22 years ago

Hi Andrei Zmievski, you wrote:

> The main question is: why do you need to do it?

Exercise ;)

I'll try to explain after having dinner...

Thanks,

--
Michael - < mike(@)php.net >

Andi Gutmans

22 years ago

There doesn't exist such a thing as the object's zval. An object can have
many zval's. The zval includes the object's id and handlers that manage the
object's behavior. You can just create a new zval by using MAKE_STD_ZVAL()
and setting the relevant fields.
If you get stuck let me know.

Andi

At 11:16 AM 8/27/2004 +0200, Michael Wallner wrote:

Michael Wallner

22 years ago

Hi Andi Gutmans, you wrote:

> You can just create a new zval by using
> MAKE_STD_ZVAL() and setting the relevant fields.

Fair enough;  I was searching for kinda ZVAL_OBJ[ECT]()
macro at second, without success...

> If you get stuck let me know.

A tiny piece of code would help a lot :)

I can't imagine how to do that right now,
because I don't have the zend_object_handle.

If you scroll down to approx. the middle of the
code here http://iworks.at/~mike/apr/apr.c there's
the definition of an APR_Ring object being kind of
a doule-linked list.

Now if I want to introduce a walk method going along
the objects to call_user_function_ex() on them I need
a zval to pass as parameter.

Thanks,

--
Michael - < mike(@)php.net >