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Date: Sat, 6 Aug 2011 10:30:21 +0100
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To: Stas Malyshev <smalyshev@sugarcrm.com>
Cc: Etienne Kneuss <colder@php.net>, PHP internals <internals@lists.php.net>, 
	PHP Documentation List <phpdoc@lists.php.net>
Content-Type: text/plain; charset=UTF-8
Subject: Re: [PHP-DEV] asString() method vs __toString() magic method.
From: rquadling@gmail.com (Richard Quadling)

On 3 August 2011 00:51, Stas Malyshev <smalyshev@sugarcrm.com> wrote:
> Hi!
>
> On 8/2/11 7:51 AM, Etienne Kneuss wrote:
>>
>> The (historic) reason is that the toString conversion occurs at
>> various places in the engine, and in some of them, throwing exceptions
>> caused trouble. It is not clear whether this limitation it still
>> required. In any case, it could almost certainly be fixed.
>
> In theory, yes. In practice, that means ensuring every place in the engine
> that does convert_to_string() can be safely interrupted by an exception and
> can handle that exception properly. This is pretty hard to do.
> --
> Stanislav Malyshev, Software Architect
> SugarCRM: http://www.sugarcrm.com/
> (408)454-6900 ext. 227
>

What would be a good way to explain this in the documentation. Just
saying that you can't is only going to present more questions.
Explaining it a way that isn't too technical, but covers the basis
would be good.



-- 
Richard Quadling
Twitter : EE : Zend : PHPDoc
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY : bit.ly/lFnVea