Display fatal/notice errors in browser

Question

Well I just started with hhvm/hack. But I wanted to display the errors to the browser but didnot got it working.

I set the ini settings as followed

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Answer 1

It's possible to fall back to php when hhvm fails. Pretty simple to do that - https://bjornjohansen.no/hhvm-with-fallback-to-php. I understand you can attach php fallback per error code (like 404). So isn't it possible to fall back to php server that shows a page which loads the hhvm error log?