HHVM 4.169 is released! 4.166 - 4.168 remain supported, as does the 4.153 LTS releases.


  • hackfmt now only allows up to 1 consecutive blank lines (previously 2).
  • The compiler options --module and --cmodule are being renamed to --dir and --cdir to avoid confusion with the experimental ‘modules’ feature. (This item was retroactively added to this announcement on 2022.11.02).

Breaking Changes

  • The $callback passed to fb_setprofile now receives all parameters, including non-default and default parameters. Previously only non-default parameters are passed to $callback.