Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:60486
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 209.85.212.42 as permitted sender)
MIME-Version: 1.0
Sender: laruence@gmail.com
In-Reply-To: <CAET_qdOGuKsaY256ZSqgta71pdo4u64EkBH2HhkVMwvgGPoSfQ@mail.gmail.com>
References: <CAET_qdOGuKsaY256ZSqgta71pdo4u64EkBH2HhkVMwvgGPoSfQ@mail.gmail.com>
Date: Sun, 6 May 2012 11:47:23 +0800
Message-ID: <CABBJUpdEYCDqGYFNQrcvPOQ2i8_OO9qrNiC36SHGyd0aFhMZkw@mail.gmail.com>
To: Devis Lucato <devis@lucato.it>
Cc: internals@lists.php.net
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Subject: Re: [PHP-DEV] catching exception using a variable passed by reference
From: laruence@php.net (Laruence)

On Sun, May 6, 2012 at 8:40 AM, Devis Lucato <devis@lucato.it> wrote:
> Hi,
>
> I stumbled upon this code while working with a variable passed by
> reference, I was wondering if someone could provide some feedback before
> raising a ticket, just in case PHP (5.3.6) is doing what it's supposed to
> do.
> In the code below I would expect "catch" to change the variable as
> an assignment would do, but that doesn't happen.
>
> =C2=A0function foo(&$exception)
>> {
>> =C2=A0 =C2=A0 try {
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 throw new Exception('foo error');
>> =C2=A0 =C2=A0 } catch (Exception $exception) {
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 var_dump(gettype($exception));
>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 echo $exception->getMessage() . "\n";
>> =C2=A0 =C2=A0 }
>> }
>> foo($error);
>> var_dump(gettype($error));
>
>
>
> Expected:
>
>> string(6) "object"
>> foo error
>> string(6) "object"
>
>
> Current result:
>
>> string(6) "object"
>> foo error
>> string(4) "NULL"
>
>
>
> It looks like "catch" is creating a completely new variable in the scope,
> also removing the existing one from it.
Hi,

    could you file a bug at bugs.php.net?  :)

thanks
> I appreciate this is an edge case, if not a bug is it worth adding it to
> http://php.net/manual/en/language.exceptions.php or somewhere under
> http://www.php.net/manual/en/language.references.php ?
>
>
> Thank you!



--=20
Laruence =C2=A0Xinchen Hui
http://www.laruence.com/