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Date: Wed, 17 Mar 2010 22:19:39 +0100
Message-ID: <e666c3891003171419t35b0df06v6c1d502c270154de@mail.gmail.com>
To: "mathieu.suen" <mathieu.suen@easyflirt.com>
Cc: internals@lists.php.net
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Subject: Re: [PHP-DEV] Assign array with __get
From: webmaster@colder.ch (Etienne Kneuss)

Hello,

On Wed, Mar 17, 2010 at 3:40 PM, mathieu.suen
<mathieu.suen@easyflirt.com> wrote:
> Ionut G. Stan wrote:
>>
>> Hi,
>>
>> This is interesting and it appears the following change makes the snippe=
t
>> work as expected:
>>
>> =A0 =A0public function &__get($name);
>
>
> I think is that the $this->anArray['bar'] =3D 4;
>
> Generate the following bytcode:
>
> 0 =A0FETCH_OBJ_W =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0$0 =A0 =A0 =A0'anArray'
> 1 =A0ZEND_ASSIGN_DIM =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0$0, 'bar'
>
> Will the folloing :
>
> echo $this->anArray;
> $this->anArray['bar'];
>
> 0 =A0FETCH_OBJ_R =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 $0 =A0 =A0 =A0'anArray'
> 1 =A0ECHO
> ...
>
>
>
> IMHO I think that the complexity of the VM is way to hight.
> That is something I am strongly agree with Gilad Bracha on adding new
> feature into a language:

What exactly would you like it do? You've two options:

1) __get, define the property, and then __set?
2) __get returns a ref that is modified

The second option is taken by PHP.
In your case you return a value, not a reference.

>
> Look at the last paragraph:
> http://gbracha.blogspot.com/2009/09/systemic-overload.html
>
>>
>>
>> On 3/17/10 3:55 PM, mathieu.suen wrote:
>>>
>>> Hi,
>>>
>>>
>>> I came across a strange behavior when using the magic method __get and
>>> some instance variable that should be an array.
>>> Consider the following example:
>>>
>>>
>>> class A
>>> {
>>>
>>> public function __get($name)
>>> {
>>> $this->$name =3D array();
>>> return $this->$name;
>>> }
>>>
>>> public function test()
>>> {
>>> $this->_zork['bar'] =3D 67;
>>> }
>>> }
>>>
>>> $a =3D new A;
>>> $a->test();
>>>
>>> var_dump($a);
>>>
>>>
>>> So could someone explain me what is the semantic of the above statement=
s?
>>>
>>> Thanks
>>>
>>>
>>> -- Mathieu Suen
>>>
>>>
>>>
>>
> --Mathieu Suen
>
>
>
>
>
> --
> PHP Internals - PHP Runtime Development Mailing List
> To unsubscribe, visit: http://www.php.net/unsub.php
>
>



--=20
Etienne Kneuss
http://www.colder.ch