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Date: Wed, 8 Mar 2017 09:50:57 -0700
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To: "internals@lists.php.net" <internals@lists.php.net>
Cc: Andrey Andreev <narf@devilix.net>
Content-Type: multipart/alternative; boundary=001a1134feccc14bf0054a3aee98
Subject: Re: [PHP-DEV] [Discussion] is_string(), string type and objects
 implementing __toString()
From: derokorian@gmail.com (Ryan Pallas)

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On Wed, Mar 8, 2017 at 9:50 AM, Ryan Pallas <derokorian@gmail.com> wrote:

>
>
> On Wed, Mar 8, 2017 at 8:51 AM, Fleshgrinder <php@fleshgrinder.com> wrote:
>
>> Hey! :)
>>
>> The reference is actually not a problem for a Stringable because you
>> would get the "Only variables can be passed by reference" error with an
>> object if `strict_types` is enabled.
>>
>> Simply because the object **MUST** be converted into a string. The
>> object itself does not satisfy the constraint, but the object clearly
>> states that it can be converted into a string at any point.
>>
>
> This is the part I disagree with. The object clearly states that it can be
> turned into a string when you are done using it as a object. If it gets
> turned into a string, you can no longer use it as a object.
>
> There is a difference between changing an int to string and an object to
> string, in that afterwards the int->string can continue to be treated as an
> int afterwards, thanks to loose typing (otherwise it wouldn't have become a
> string in the first place). However with an object->string afterwards it
> can ONLY be treated as a string, it can no longer be treated as an object.
> Meaning
>
> $int = 3;
> foo(3);
>
Sorry this should have been:
foo($int);

> var_dump(++$int); // 4, success, no errors
>
> $obj = new Foo('a');
> foo($obj);
> var_dump($obj->method()); // Fatal error: call to member function method
> on string.
>
> To me, this doesn't make sense.
>
>>
>> Not doing so would violate what `strict_types` actually promise us. ;)
>>
>> --
>> Richard "Fleshgrinder" Fussenegger
>>
>
>

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