Re: [PECL-DEV] Re: shared memory extention

On Thu, 15 Apr 2010 17:44:05 +0200, Geoffrey McRae <[email protected]>  
wrote:

> Thanks for the help,
>
> I have another question, hopefully simple...
> how do I get the parent zval of a zval that has is_ref set to true?
>
> I have 99% of the code functional now, just need to figure out this
> array reference issue.
>
> Or even better yet, is there a way to compare two zval's and see if they
> are pointing to the the same data?
>

is_ref only says if a zval is part of a reference set; there is no parent.  
If you make
$a = 1; $b =& $a;
there will be only one zval (with is_ref set to TRUE and refcount set to  
2). With is_ref set to TRUE, you know, for instance, you don't have to  
separate $a and $b when you change one of them (since if you omitted "&"  
there would still be only one zval).

-- 
Gustavo Lopes