Out of politeness I answer myself,
PHP_FUNCTION(var_dump)
-> php_var_dump()
-> zend_std_get_properties_for() // Zend
object handler get_properties_for
-> obj->handlers->get_debug_info(obj, &is_temp); // Zend
object handler get_debug_info
-> zend_std_get_properties();// Zend
object handler get_properties
-> rebuild_object_properties()
-> _zend_hash_append_ind()
=> ZVAL_INDIRECT(&p->val, ptr); // do the
trick( Z_TYPE change)
TODO: Find out how to manage the IS_INDIRECT
So to reproduce the default php behavior I can implement the
get_debug_info handler.
I'm still trying to figure out how to modify this line :
void my_get_debug_info() {
// ...
// Z_REFCOUNT(intern->data)==1
// Z_TYPE(intern->data)==IS_REFERENCE
// Z_TYPE(Z_REF(intern->data)->val)==IS_ARRAY
zval zdata; ZVAL_COPY(&zdata, &intern->data);// Why do I have to
hide that it's a reference ?
zend_hash_str_update(debug_info, "data", sizeof("data")-1, &zdata);
// ...
return debug_info;
}
my_handlers.get_debug_info = my_get_debug_info;
struct _my {// intern structure
zval data;// array of unsigned int
zend_object std;
};
Le sam. 9 avr. 2022 à 15:42, Glash Gnome <[email protected]> a écrit :
> Hello,
>
> I am developing a PHP extension. I can't reproduce the behavior of
> references of Zend/PHP.
>
> Here is some Code illustrating Zend's behavior:
> <?php
> class Foo { public $baz = array(1);}
> $foo = new Foo();
> $ref = &$foo->baz;
> $foo->baz = [123];//set array has reference
> var_dump($foo);
>
> Output ------------------------
> object(Foo)#1 (1) {
> ["baz"]=>
> &array(1) { [0]=> int(123) }
> }
> --------------------------------
> Note the symbol ( &) output from the var_dump();
>
>
> Now I add unset($ref) in my code
> <?php
> class Foo { public $baz = array(1);}
> $foo = new Foo();
> $ref = &$foo->baz;
> //unset($ref);// kill reference
> $foo->baz = [123];// set array has reference
> unset($ref) ;// kill reference
> var_dump($foo);
> ------------------------
> object(Foo)#1 (1) {
> ["baz"]=>
> array(1) { [0]=> int(123) }
> }
> --------------------------------
>
> Note that the symbol (&) has disappeared from the output of var_dump();
>
> I would like to reproduce this behavior but I don't know which method of
> zend_object_handlers allows to remove( Z_UNREF) the reference.
>
> Thank you for your help
>
>
>
