PHP 8 Support

[Jean85]

This is temporarily blocked by Jean85/pretty-package-versions#25 (which in turn is blocked by phpspec/prophecy#491)

[Jean85]

Closing/reopening to trigger CI restart.

[ste93cry]

I think that phpspec/prophecy has been updated to support PHP 8, can you please rebase the PR and check if everything works?

[ste93cry]

Please don't merge the branch on the PR but rebase instead to keep the history cleaner 😉 Also build is failing due to PHPStan

[Jean85]

History is not an issue since we do squash+merge; I prefer merges since they create less issues with conflicts.

PHPStan issue fixed.

[Jean85]

Blocked by vimeo/psalm#4408 (which is already fixed but unreleased)

[Jean85]

Also, I can't reproduce current failures locally 😢

[chris-doehring]

The PHP-Parser package released a new version v4.10.3 including nikic/PHP-Parser#736, but unfortunately Travis CI still keeps failing. The main reason is the "Segmentation fault" error. At this point, I think this is a problem in the Travis environment. When running the same tests locally or via GitHub actions, this error does not occur. I don't know if you want to stick with Travis here, but if not, feel free to use the GitHub actions I created in my fork.

However, apart from the CI stuff, there is still one issue pending:
As soon as xdebug code coverage is activated, the test tests/phpt/error_handler_captures_out_of_memory_fatal_error.phpt does not call the shutdown function whenever it runs out of memory. This only happens for the highest dependencies, but so far I have no clue what the issue might cause.

[Jean85]

Travis got its PHP 8 images!

I'll try one more run...

[chris-doehring]

I'm a bit surprised that the memory test was so easy to fix, but it makes a lot of sense that newer phpunit versions just use more memory when running with code coverage. I didn't think of that 😄 Nice work @ste93cry! If you now change the php 8 Travis image to 8.0snapshot, Travis should be completely green. 🥳 They are still working on a php 8.0 tag.

[stayallive]

Thank you for the work on this, excellent 💪

[ste93cry]

Thanks to everyone that contributed the changes to make this PR work and thank you all for the patience. LGTM