[RFC] Grouped ValueError Conversions for PHP 8.6 (mkdir example)

Am 18.02.2026 um 20:32 schrieb Muhammed Arshid KV arshidkv12@gmail.com:

Following maintainer feedback, I’ve created an RFC to group multiple warning → ValueError conversions for PHP 8.6 instead of proposing many small RFCs.
The initial example includes mkdir() where invalid permission values (outside 0..07777) would throw ValueError instead of emitting a warning and returning false.

When converting something which has currently silently ignored (part of its) parameters to a ValueError Exception, you should add an E_WARNING phase to give developers a time window to fix their code.

Example:
mkdir("foo", 070555)); # Currently does the same thing as 0555

The E_WARNING phase enables developers to catch writing 555 instead of 0555, but it allows fixing the code without being a blocker for upgrading to PHP 8.6.

Regards,

• Chris

Hi,

On Wed, Feb 18, 2026 at 8:39 PM Muhammed Arshid KV arshidkv12@gmail.com
wrote:

Hello internals,

Following maintainer feedback, I’ve created an RFC to group multiple
warning → ValueError conversions for PHP 8.6 instead of proposing many
small RFCs.

The initial example includes mkdir() where invalid permission values
(outside 0..07777) would throw ValueError instead of emitting a warning
and returning false.

RFC draft:
https://wiki.php.net/rfc/php86_valueerror_conversions

Please check the deprecation RFC out:
https://wiki.php.net/rfc/deprecations_php_8_6 . It should be done in a
similar way with section for each different case. There should be then
multiple votes.

Cheers

Jakub