Cms: PHP 8 support status

Created on 23 Oct 2020 · 4Comments · Source: craftcms/cms

Craft CMS

[x] oAuth2 Client currently isn't installable on PHP 8 via Composer: https://github.com/thephpleague/oauth2-client/issues/862
[x] Minify currently isn't installable on PHP 8 via Composer: https://github.com/mrclay/minify/issues/681
[x] Guzzle added support for PHP 8 in 7.2.0. Craft 3 currently uses ^6.5.1. 7.0.0 has a couple breaking changes but we don’t anticipate they will affect plugins (only one of them affects Craft and is easy to work around, but it requires PHP 7.2+ so we would need to change our Guzzle requirement to ^6.5.1 || ^7.2.0, to maintain PHP 7.0 support.
[x] Composer added support for PHP 8 in Composer 2. Craft uses Composer 1.1.10 internally. Will need to update it to Composer 2 when it is officially released and test for breaking changes. https://github.com/composer/composer/milestone/23
[x] Imagine 1.2.4 fixed PHP 8 compatibility
[x] Yii 2 has some outstanding issues which look to be fixed for their next release: https://github.com/yiisoft/yii2/pull/18317
[x] The feed reader we're currently using has some outstanding issues, although initial tests show they don't affect Craft: https://github.com/laminas/laminas-feed/issues/27
[x] https://github.com/yiisoft/yii2/pull/18407 needs to get released to fix #7174
[x] SVG Sanitizer is broken on PHP 8. Have submitted a PR: https://github.com/darylldoyle/svg-sanitizer/issues/46

[ ] [cspoo/swiftmailer-mailgun-bundle](https://github.com/tehplague/swiftmailer-mailgun-bundle) isn’t compatible with php-http/guzzle7-adapter, due to a php-http/httplug conflict. Once that is resolved, we can release a new version of Mailgun that requires Craft 3.6+ and guzzle7-adapter.