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Date: Wed, 29 Nov 2023 08:46:43 +0900
Message-ID: <CAEPPVa3ZNeA4dy4uCmh1ppxaiZ_wbRNMdd9wnQX5UQTZmkcB=w@mail.gmail.com>
To: internals@lists.php.net
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Subject: Re: [PHP-DEV] Deprecate declare(encoding='...') + zend.multibyte +
 zend.script_encoding + zend.detect_unicode ?
From: youkidearitai@gmail.com (youkidearitai)

2023=E5=B9=B411=E6=9C=8829=E6=97=A5(=E6=B0=B4) 8:07 Hans Henrik Bergan <div=
inity76@gmail.com>:
>
> @youkidearitai right now the code specifically deals with
> - UTF8: removing UTF8 BOM and removing `declare(encoding=3D'UTF-8');
> - UTF16LE/UTF16BE/UTF32LE/UTF32BE: converting to UTF8 removing the BOM
> and removing declare(encoding=3D'...')
> - ISO-8859-1: converting to UTF-8 and removing
> declare(encoding=3D'ISO-8859-1'), i couldn't really find information on
> a ISO-8859-1 BOM, so to the best of my knowledge it does not exist
>
> it does not deal with any other encodings as of writing, but more can
> be added if needed.
>

Hi, Hans

I see. I understand the argument.
At least, Japanese character encoding seems not using declare(encoding=3D..=
.).

Probably, we use zend_encoding implicitly.
If delete zend_encoding, In SJIS (Shift_JIS) probably will occur 5c problem=
.

For example is below:

$val =3D "=E8=A1=A8"; // =E8=A1=A8 is 0x955c, script see 0x5c22, therefore,=
 Throw on Parse Error

Please see about 5c problem https://blog.kano.ac/archive/posts/1654_5c-prob=
lem/

I would like to maintain backwards compatibility. zend_encoding seems
can't delete.

Regards
Yuya

--=20
---------------------------
Yuya Hamada (tekimen)
- https://tekitoh-memdhoi.info
- https://github.com/youkidearitai
-----------------------------