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Date: Fri, 13 Apr 2012 19:36:02 +0900
Message-ID: <CAGa2bXY2b1O4Au9LF-WQyD90bz_RL+bBTmpiUV05RV9v-ry9NQ@mail.gmail.com>
To: Laruence <laruence@php.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: yohgaki@ohgaki.net (Yasuo Ohgaki)

Hi,

2012/4/13 Laruence <laruence@php.net>:
> 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:
>>>> =A0 =A0 =A0I have made a RFC to allow user use T_AS in the closure dec=
laration,
>>>> like:
>>>>
>>>> =A0 =A0 =A0function () use($long as $l,&$long as $r) {
>>>>
>>>> =A0 =A0 =A0}
>>>>
>>>> =A0 =A0 =A0here is the RFC: https://wiki.php.net/rfc/useas
>>>>
>>>> =A0 =A0 =A0any ideas? =A0thanks
>>>>
>>> Closure is a functional literal that can pull with itself all variables
>>> visible in current scope where it was created. For my opinion using key=
word
>>> 'use' is not necessary and i would have removed it. If you need differe=
nt
>>> name of variable maybe you need anonymous function.
>>>
>>
>> You might be used to other language's scoping, but
>> this is the way PHP works.
> closure was not the way PHP works. =A0but now, =A0it has be introduced in=
 PHP
>>
>> Named function cannot do this, but anyway
>> function FUNC($a, $b, $c) uses ($d, $e, $f) {}
>> is like
>> function FUNC($a, $b, $c) { global $d, $e, $f; }
>
> they do are different, =A0previous is a lexical variable. =A0that means i=
t
> equal to the value when the closure is created.
>
> the latter is the value when it was called.

Thanks for correction.
I should have mentioned that.

It's only similar that these are importing outside vars
into current scope. Importing is the same, but scope
is not.

I wander if there are any good named function usage
that imports current scope vars.

Regards,

--
Yasuo Ohgaki
yohgaki@ohgaki.net