[mysqli] Add stubs for mysqli and mysqli_result classes

[phansys]

No description provided.

[phpstan-bot]

This pull request has been marked as ready for review.

[ondrejmirtes]

What are the types without the stubs added? Also, isn't this platform-dependent? Isn't the precision going to be annoying for someone who knows they're using a specific DB engine?

[phansys]

What are the types without the stubs added?

I'm not sure about this question. Are you asking about other missing properties that are defined for these classes?

Also, isn't this platform-dependent?

AFAIK, these types are the same for any platform. At least, the docs are not exposing a distinction regarding this.

Isn't the precision going to be annoying for someone who knows they're using a specific DB engine?

IIUC, these types are specific for the MySQLi extension, regardless the MySQL engine version.

[ondrejmirtes]

What error are you trying to fix? How the tests fail if you remove changes in stubs?

[phansys]

This is the error I'm trying to fix.

[ondrejmirtes]

Please add a regression test for that too.

[phansys]

Please add a regression test for that too.

Done. Please, let me know if there is something else to address.

[ondrejmirtes]

1. The namespaces should be more unique. Something like namespace MySqlAffectedRowsType.
2. Your playground example is about ReturnTypeRule, which means the test should be added in ReturnTypeRuleTest (for methods).

[phansys]

I've changed the namespaces and added the test to returnTypes.php.
I hope these changes are going in the right direction, but please let me know if there is something missing.

Thank you in advance.

[ondrejmirtes]

Thank you!