The next LTS release of HHVM has been cut and packages are now available for Ubuntu 14.04, 15.04, 15.10, and 16.04; and Debian 7 and 8. This release replaces the 3.9 LTS and brings with it a host of improvements and new features.

The 3.15 release features native support for the shmop, pg-sql, and scrypt extensions, enhancements to the garbage collector, critical fixes for TC recycles which had been broken in recent releases. Also included in this release, various bug and incompatibility patches, and enhancements to inlining, method dispatch, and other important performance optimizations.

Many of the extension and user-facing bug fixes included in this release would not have been possible without the support of our community, both through pull requests and bug reports. Special thanks to Simon and the many other contributors to the recently merged pg-sql extension, and Joe, William, and the rest of our friends at LastPass for their work on the scrypt extension.

Instructions for installing HHVM from either packages or source can be found in our documentation. Should you encounter any new issues with this release please file a bug report on our issue tracker.


  • HHVM commits for the three weeks ending 2016-09-26 | Coding Aloud: […] Three week’s worth and my laptop was not happy with the amount of tabs I had open. There were so many commits that I probably missed some ones I could highlight, especially as they got closer to today. The main things that have happened in the last three weeks are 3.15 was released and the main blog finally got another post! […]