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Subject: Re: [PHP-DEV] [Discussion] Cookies Having Independent Partitioned
 State (CHIPS)
Date: Sat, 5 Jul 2025 17:26:18 -0500
References: <CANTuiHvbBHfGFzzZyqkgejPR0GGUnVxVsoqWsRg9GiT2_VWteg@mail.gmail.com>
To: PHP internals <internals@lists.php.net>
In-Reply-To: <CANTuiHvbBHfGFzzZyqkgejPR0GGUnVxVsoqWsRg9GiT2_VWteg@mail.gmail.com>
Message-ID: <0D711888-1BDC-42E1-8EFE-B77681AE8BF4@php.net>
From: ramsey@php.net (Ben Ramsey)


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> On Jul 5, 2025, at 06:52, Dmitry Derepko <xepozzd@gmail.com> wrote:
>=20
> Hi, Internals!
>=20
> A few days ago I faced some Cookie limitations, solutions led me to =
the CHIPS specification.
>=20
> Link: =
https://developer.mozilla.org/en-US/docs/Web/Privacy/Guides/Privacy_sandbo=
x/Partitioned_cookies
>=20
> The idea of the CHIPS implementation is to add a new Cookie part named =
"Partitioned".
>=20
> When I set this flag using setcookie function, there was error: =
https://3v4l.org/WDpDX
>=20
> The error raises here:
> =
https://github.com/php/php-src/blob/5853cdb73db85c75d5f558a8cf92161a31291d=
e0/ext/standard/head.c#L205-L220
>=20
> The workaround is to use the "header" function, which allows any =
strings inside.
>=20
> I want to allow the "Partitioned" key to be set. Shall I open RFC or =
is it possible to create only PR with improvements?
> Also, I think it may be backported to all the actual PHP versions.
>=20
> --=20
> Best regards,
> Dmitrii Derepko.
> @xepozz


The Partitioned parameter isn=E2=80=99t supported in Firefox or Safari. =
=46rom what I can tell, it=E2=80=99s only supported in Chromium-based =
browsers. Safari 18.4 supported it, but they removed the support in =
18.5. I=E2=80=99d like to understand why, but I haven=E2=80=99t been =
able to find anything on it.

Cheers,
Ben


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