The errorHandler class suppresses output of custom MyBB error types

[Laird]

It probably makes sense to only check for PHP's inbuilt error types (so as in the second snippet), especially if MyBB errors that should be fatal may be accidentally left ignored without terminating execution.

Good, we agree on this. I'll probably create an issue + PR for this on GitHub at some point unless you or somebody else gets onto it first. It seems that the process of evaluating threads in this forum to either push or reject has mostly stopped functioning.

For MyBB errors specifically, there should be better control with catchable database exceptions, and error handler options - both can be extended if needed.

I did remember that you'd done some good work on error-handling for 1.9, but had forgotten those details.