[META] Make Drupal 10.2/11 compatible with PHP 8.3

better title

What is the first version of Drupal that will run on PHP 8.3?

@Liam as its release in Dec'23 the most probably 10.2.0

@Liam Morland we aim for the Drupal minor release immediately after the PHP minor release to be fully compatible - i.e. 10.2 should have PHP 8.3 compatibility - obviously something horrible could come up, but also we'd try to report that upstream prior to their release if we could. Fully compatible just means 'tests pass', there's usually follow-up and untested deprecations that get found etc.

If all the changes are easy, we might backport some of them to 10.1, and then 10.1 might end up compatible with PHP 8.3 even before it's released, but there's no way to predict whether that'll happen or not, and we'll only backport if it's straightforward.

New attribute is added to PHP 8.3 #[\Override] https://wiki.php.net/rfc/marking_overriden_methods

New deprecations are coming so filed new child 🐛 Fix deprecated overloaded function usage in PHP 8.3 Fixed

One more RFC commited https://wiki.php.net/rfc/assert-string-eval-cleanup

$ git grep assert_options
core/assets/scaffold/files/example.settings.local.php:35:assert_options(ASSERT_ACTIVE, TRUE);
core/assets/scaffold/files/example.settings.local.php:36:assert_options(ASSERT_EXCEPTION, TRUE);
core/lib/Drupal/Component/Assertion/Handle.php:5:trigger_error(__NAMESPACE__ . '\Handle is deprecated in drupal:10.1.0 and is removed from drupal:11.0.0. Instead, use assert_options(ASSERT_EXCEPTION, TRUE). See https://drupal.org/node/3105918', E_USER_DEPRECATED);
core/lib/Drupal/Component/Assertion/Handle.php:13: *   assert_options(ASSERT_EXCEPTION, TRUE).
core/lib/Drupal/Component/Assertion/Handle.php:24:    assert_options(ASSERT_WARNING, FALSE);
core/lib/Drupal/Component/Assertion/Handle.php:27:    assert_options(ASSERT_EXCEPTION, TRUE);
core/lib/Drupal/Core/DrupalKernel.php:1062:        assert_options(ASSERT_ACTIVE, TRUE);
core/lib/Drupal/Core/DrupalKernel.php:1064:        assert_options(ASSERT_EXCEPTION, TRUE);
core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php:70:    $assert_active_default = assert_options(ASSERT_ACTIVE);
core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php:80:    assert_options(ASSERT_ACTIVE, 1);
core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php:90:    assert_options(ASSERT_ACTIVE, 0);
core/modules/jsonapi/tests/src/Unit/EventSubscriber/ResourceResponseValidatorTest.php:95:    assert_options(ASSERT_ACTIVE, $assert_active_default);
core/tests/bootstrap.php:179:assert_options(ASSERT_EXCEPTION, TRUE);
sites/example.settings.local.php:35:assert_options(ASSERT_ACTIVE, TRUE);
sites/example.settings.local.php:36:assert_options(ASSERT_EXCEPTION, TRUE);

Filed new major child 📌 Fix deprecated assert_options() function usage for PHP 8.3 Needs review

DDEV HEAD now has PHP 8.3 support; you can already use it with `brew install --HEAD ddev/ddev/ddev` or other ways, https://ddev.readthedocs.io/en/latest/developers/building-contributing/#...

It will be in v1.22.2 before terribly long.

Not all extensions are there yet, as they're not in the upstream deb.sury.org packaging. So xdebug is still missing, for example.

FYI I'm building xdebug from git last 3 months and it works fine

One more child 📌 Fix deprecated ReflectionProperty::setValue() usage for PHP 8.3 Needs review

The issue 🐛 Upgrade filter system to HTML5 Fixed making 📌 TextSummaryTest:testLength() fails on some libxml versions Closed: outdated obsolete so only 2 issues left

- 📌 Fix deprecated assert_options() function usage for PHP 8.3 Needs review
- 📌 Fix deprecated ReflectionProperty::setValue() usage for PHP 8.3 Needs review

the only one issue left to fix

All child issues are fixed and I find the issue complete

Marking this fixed and tagging for a release highlight.

@andypost thanks for all the work in the child issues.

Fixing version.

Automatically closed - issue fixed for 2 weeks with no activity.

Added 🐛 phpspec/prophecy v1.17.0 does not support php 8.3 Active

Does "Closed (fixed)" mean PHP 8.3 is now supported in this Drupal PHP matrix → ?

Yes, just updated https://www.drupal.org/node/2891690/revisions/view/13315507/13351505 →

and there's small clean-up left 📌 Remove mentions of assert.active from .htaccess Needs work