Re: [PHP-DEV] Modifying PHP variables in C

You should use zval_ptr_dtor() to dispose the old value. Note the old 
value won't actually be freed as long as any reference to the variable is 
alive.

for example,

zval *ary1, *ary2;

/* $ary1 = array(); */
ALLOC_INIT_ZVAL(ary1);
array_init(ary1);

/* $ary2 = array(); */
ALLOC_INIT_ZVAL(ary2);
array_init(ary2);

/* $ary1['key'] = 123; */
add_assoc_long_ex(ary1, "key", sizeof("key"), 123);

/* $ary2['key'] = 456; */
add_assoc_long_ex(ary2, "key", sizeof("key"), 456);

/* $ary1 = $ary2 */
zval_add_ref(ary2);
zval_ptr_dtor(&ary1);
ary1 = ary2;


Moriyoshi

"John Lim" <[email protected]> wrote:

> Hi,
> 
> I'm porting some PHP code to C, and was hoping that someone can help me.
> 
> I have 2 variables $oldarray  and $newarray that both hold arrays and want
> to set
> 
>   $oldarray = $newarray;
> 
> I suppose i have to dispose of $oldarray before i set it to $newarray. I'm
> not sure what is the best way, so i did this.
> 
> zval **oldarray,*newarray;
> 
> zval_add_ref(&newarray);
> convert_to_null_ex(oldarray);
> *oldarray = newarray;
> 
> Would this work? Secondly is there a better way. Thanks again.
> 
> John Lim