HHVM 4.157 is released! This release marks the end of support of 4.150; 4.151 - 4.156 remain supported, as does the 4.128 LTS release.


  • New supported distribution: Ubuntu 21.10 (compiled with gcc 10)
  • Bug fixes for __FILE__ and __DIR__ magic constants in traits
  • Bug fixes related to postsend functions in the vsdebug debugger extension
  • Initial work on supporting module-internal visibility
  • Initial work on supporting multiple as/super constraints on a type constant

Breaking Changes

  • This release breaks compatibility with older versions of hhvm/hhast. If hhast is used, it should be updated to version 4.157 together with this update.