Change effective on 10 July 2018
The following PHP extensions have been added or updated:
ext-apcu, version 5.1.12
ext-blackfire, version 1.22.0
ext-mongodb, version 1.5.1
PHP 7.2 on the
heroku-18 stack now supports the Argon2 password hashing algorithm.
All versions of PHP 7 on all stacks are now built with