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Date: Tue, 2 Aug 2011 23:03:30 +0200
Message-ID: <CACQesk7_j7KrnbpMvbB7d7NUxAebin01ATRx1CfMT_58fkZ66A@mail.gmail.com>
To: Flavius Aspra <flavius.as@gmail.com>
Cc: internals@lists.php.net
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Subject: Re: [PHP-DEV] [Q] references and objects
From: colder@php.net (Etienne Kneuss)

Hello,

On Tue, Aug 2, 2011 at 22:05, Flavius Aspra <flavius.as@gmail.com> wrote:
> I have a zval *obj holding an object of class B, which I then add to an
> array member of another object of class A. Then I create a new instance
> *obj2 of class B, to which I want to add a reference to *obj. How would I
> best go about it?
>
> So A works as a "pool" of B's, and B's may reference to each other.
>
> Please tell me key functions and macros to use to accomplish specifically
> this thing, as the API is quite new to me.
>
> I have thought about setting Z_SET_ISREF_P() manually, but what else would I
> need? From my understanding, I'd still need a new zval* for that. Any other
> better ways?

You generally don't want to use references.

Rather, you can keep the same zval* pointer as long as you
increment/decrement its refcount (Z_ADDREF_P/zval_ptr_dtor) so that it
correctly keeps track of how many pointers are pointing to it.

Unless I misunderstood what you're trying to do, it's that easy.

Best,

>
> Regards,
> Flavius
>
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>



-- 
Etienne Kneuss
http://www.colder.ch