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Date: Fri, 13 Apr 2012 17:21:14 +0800
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To: Yasuo Ohgaki <yohgaki@ohgaki.net>
Cc: Verbitsky Alexander <verbitsky_alexandr@mail.by>, internals@lists.php.net
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Subject: Re: [PHP-DEV] [RFC] Allow "use( $longname as $alias)" syntax for
 closures declaration
From: laruence@php.net (Laruence)

On Fri, Apr 13, 2012 at 4:19 PM, Yasuo Ohgaki <yohgaki@ohgaki.net> wrote:
> Hi,
>
> 2012/4/13 Verbitsky Alexander <verbitsky_alexandr@mail.by>:
>> On 04/12/2012 06:38 PM, Laruence wrote:
>>>
>>> Hi:
>>> =C2=A0 =C2=A0 =C2=A0I have made a RFC to allow user use T_AS in the clo=
sure declaration,
>>> like:
>>>
>>> =C2=A0 =C2=A0 =C2=A0function () use($long as $l,&$long as $r) {
>>>
>>> =C2=A0 =C2=A0 =C2=A0}
>>>
>>> =C2=A0 =C2=A0 =C2=A0here is the RFC: https://wiki.php.net/rfc/useas
>>>
>>> =C2=A0 =C2=A0 =C2=A0any ideas? =C2=A0thanks
>>>
>> Closure is a functional literal that can pull with itself all variables
>> visible in current scope where it was created. For my opinion using keyw=
ord
>> 'use' is not necessary and i would have removed it. If you need differen=
t
>> name of variable maybe you need anonymous function.
>>
>
> You might be used to other language's scoping, but
> this is the way PHP works.
closure was not the way PHP works.  but now,  it has be introduced in PHP
>
> Named function cannot do this, but anyway
> function FUNC($a, $b, $c) uses ($d, $e, $f) {}
> is like
> function FUNC($a, $b, $c) { global $d, $e, $f; }

they do are different,  previous is a lexical variable.  that means it
equal to the value when the closure is created.

the latter is the value when it was called.

thanks
>
> I would rather have this.
> function FUNC($a, $b, $c) uses ($d, $e, $f) {}
> Then it would be consistent with anonymous function.
>
> There are methods, so we should be careful though.
>
> Regards,
>
> --
> Yasuo Ohgaki
> yohgaki@ohgaki.net
>
> --
> PHP Internals - PHP Runtime Development Mailing List
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>



--=20
Laruence =C2=A0Xinchen Hui
http://www.laruence.com/