Support PHP8.2

[ChristophWurst]

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Is your feature request related to a problem? Please describe.

PHP8.1 is the latest and greatest PHP. One day there will be 8.2 and it would be cool if Nextcloud can support it reasonably early. Not too early where it is unstable, but as soon as the support libraries are ready and there are no known issues.

Describe the solution you'd like

As a first step: have PHP8.2 nightly included in CI builds ASAP.
Later: include official 8.2 support once it's stable.

Describe alternatives you've considered

N/a

Additional context

• Support PHP8.1 #29287

Todo

• https://github.com/laravel/serializable-closure/releases/tag/v1.2.2
  • Bump laravel/serializable-closure to 1.2.2 in master 3rdparty#1239
  • Bump laravel/serializable-closure to 1.2.2 in master #35405
• Fix name of dymanic var $mountOptions to fix PHP 8.2 compatibility #35400
• Fix PHP 8.2 dynamic property warning in ASN1.php phpseclib/phpseclib#1869
  • Wait for phpsec new release on 2.x
  • Bump phpseclib/phpseclib to 2.0.40 in master 3rdparty#1260
  • Bump phpseclib/phpseclib to 2.0.40 in master #35813
• Fix theming tests for PHP 8.2 #35403
• https://github.com/egulias/EmailValidator/releases/tag/3.2.1
  • Bump egulias/email-validator to 3.2.1 in master 3rdparty#1243
  • Bump egulias/email-validator to 3.2.1 in master #35468
• Fix errors in calendar tests saying function handleIMipMessage does n… #35620
• Fix PHP error on PHP >= 8.2 about dynamic property use in tests #35828
• fix(PHP8.2): Fix deprecated string interpolation syntax #36162
• fix(PHP8.2): Declare Symfony Application property in console application #36166
• Migrate to Symfony Mailer #30349
• allow PHP 8.2 Allow php 8.2 #36375
• enable in CI

[come-nc]

8.2 support on server is tested in #32463

[come-nc]

phpseclib/phpseclib#1808 This fix on phpseclib side is needed for 8.2 support.

[mzary]

Nextcloud 25.0.1 seems to work fine on PHP 8.2.0 RC 6. Will support for PHP 8.2 be officially enabled in the upcoming 25.0.2 or 25.0.3? PHP 8.2 release is planned for 24 November 2022.

[come-nc]

Nextcloud 25.0.1 seems to work fine on PHP 8.2.0 RC 6. Will support for PHP 8.2 be officially enabled in the upcoming 25.0.2 or 25.0.3? PHP 8.2 release is planned for 24 November 2022.

No, PHP 8.2 support should come with Nextcloud 26 most likely. We need to bump several dependencies and adapt our code to make it warning-free before we officially support 8.2.