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Reply-To: Marcus Boerger <helly@php.net>
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Message-ID: <1284376279.20080518132000@marcus-boerger.de>
To: Christian Schneider <cschneid@cschneid.com>
CC: Marcus Boerger <helly@php.net>, Stanislav Malyshev <stas@zend.com>, 
	<internals@lists.php.net>
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Subject: Re: [PHP-DEV] Class Properties in Interfaces?
From: helly@php.net (Marcus Boerger)

Hello Christian,

Wednesday, May 14, 2008, 10:57:24 AM, you wrote:


> Am 14.05.2008 um 02:06 schrieb Marcus Boerger:
>>> So you are saying that
>>>        $o_Foo->bar = array(42);
>>> is ok when the class "expects" a string but
>>>        unset($o_Foo->bar);
>>> or (as as slight variation)
>>>        $o->Foo->bar = null;
>>> is not?
>>
>> I Do not get the connection here? And since when can we 'expect' a  
>> string
>> only for a property?

> You stated that allowing unset() is a bug. I replied that unset() is  
> not different from setting the value to array(42) or null and should  
> be allowed.

Not allowing unset() is the bug. Having unset delete the property would be
the error. As long as the property still exists with value NULL all is
fine.

> Apropos 'expect': A programmer of a class can have some expectations  
> of what is stored in attributes, PHP does not enforce these  
> expectations (hence I put expect in quotes). And just to make it  
> clear: I want to keep it that way, I do not want PHP to become more  
> strict than it is.

> So I completely agree with Stas here.

> - Chris





Best regards,
 Marcus