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Date: Wed, 25 Feb 2015 10:06:31 -0500
Message-ID: <CAAyV7nFBi=DiWzc7rn-od5LXDsPsNBR=pi5YefSg8Z9ocRZ4BQ@mail.gmail.com>
To: Dmitry Stogov <dmitry@zend.com>
Cc: Niktia Nefedov <inefedor@gmail.com>, PHP Internals <internals@lists.php.net>
Content-Type: text/plain; charset=UTF-8
Subject: Re: [PHP-DEV] Re: [RFC-Discuss] Scalar Type Declarations v0.5
From: ircmaxell@gmail.com (Anthony Ferrara)

Dmitry:

On Wed, Feb 25, 2015 at 7:55 AM, Dmitry Stogov <dmitry@zend.com> wrote:
> On Wed, Feb 25, 2015 at 2:42 PM, Niktia Nefedov <inefedor@gmail.com> wrote:
>
>> On Wed, 25 Feb 2015 16:30:32 +0400, Dmitry Stogov <dmitry@zend.com> wrote:
>>
>>  anyone may tell, what this will print without running :)
>>>
>>> main.php
>>> ========
>>> <?php
>>> declare(strict_types=1)
>>> include "a.php";
>>> include "b.php";
>>> var_dump(foo("5"));
>>> ?>
>>>
>>> a.php
>>> =====
>>> <?php
>>> declare(strict_types=0)
>>> function foo(string $a): string {
>>>     bar($a);
>>>     return $a;
>>> }
>>> ?>
>>>
>>> b.php
>>> =====
>>> <?php
>>> declare(strict_types=1)
>>> function bar(int &$a) {
>>>     var_dump($a);
>>> }
>>> ?>
>>>
>>> Thank. Dmitry.
>>>
>>
>>
>> Hi Dmitry,
>>
>> This will error out because $a in the scope of `foo` will be coerced to
>> int type when passed to bar by reference.
>>
>
> I think it'll work without errors and produce some explainable but weird
> output. I didn't run it myself yet.

"Weird"?

int(5)
string(1) "5"

How is that weird? That's precisely what you asked it to do.