HHVM 4.118 is released! This release marks the end of support for 4.112; HHVM 4.113–4.117 remain supported, as do the 4.80 and 4.102 LTS releases.


  • added HHI for ext_facts; when using the watchman-based autoloader, this provides information about the declarations in the current repository.

Breaking Changes

  • Stringish is now sealed to StringishObject and can not be directly extended. Any class implementing __toString(): string automatically implements the StringishObject interface.