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Date: Wed, 25 Jul 2012 15:22:05 +0800
Message-ID: <CABBJUpd_1yjZ1r2jjEMxJJmzGuUtyws_PPPbBpXhU8DBecfuNg@mail.gmail.com>
To: Galen Wright-Watson <ww.galen@gmail.com>
Cc: PHP Internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Supports 'finally' keyword for PHP exceptions
From: laruence@gmail.com (Xinchen Hui)

On Wed, Jul 25, 2012 at 3:23 AM, Galen Wright-Watson <ww.galen@gmail.com> w=
rote:
>
>
> On Tue, Jul 24, 2012 at 5:03 AM, Xinchen Hui <laruence@gmail.com> wrote:
>>
>> Sent from my iPhone
>>
>> =E5=9C=A8 2012-7-24=EF=BC=8C19:51=EF=BC=8CRafael Kassner <kassner@gmail.=
com> =E5=86=99=E9=81=93=EF=BC=9A
>>>
>>>
>>> Thanks Laruence.
>>> If I perform something like this:
>>> function test() {
>>>     try {
>>>         return 2;
>>>     } catch (Exception $e) {
>>>     } finally {
>>>         return 3;
>>>     }
>>> }
>
>
> Reminds me of nerd sniping at Google
> (http://neil.fraser.name/news/2009/10/27/, bottom of the page).
>
> Worse example:
>
>     $r =3D 1;
>     try {
>         return $r;
>     } catch (Exception $e) {
>     } finally {
>         $r =3D 2;
>     }
>
>>>
>>> What will be returned? There is no possibility to return something in
>>> finally, or finally will overwrite the return?
>>
>>
>> overweite=EF=BC=8Calthough I think it make no sense return in finally bl=
ock
>>
>> But seems java allow that, so I implement it
>
>
> C# has perhaps more desirable behavior
> (http://blogs.msdn.com/b/jmstall/archive/2006/10/05/finally_5f00_vs_5f00_=
return.aspx):
> a return in a finally block is illegal, and the return value of a return
> statement in a try block is copied from the variable before the finally
> block is executed, so 1 will be returned. However, C# seems the odd one o=
ut
> (http://www.gettingclever.com/2008/07/return-from-finally.html).
Hi:
   overwrite or not is easy to change,  I impelent this according to
java's behavior.

   but if we all think not overwrite is better,  it's easy to change

thanks


--=20
=E6=83=A0=E6=96=B0=E5=AE=B8        laruence
Senior PHP Engineer
http://www.laruence.com