Change effective on 04 April 2019
The following new runtime versions are now available for PHP applications:
The Apache HTTPD web server has been updated to version 2.4.39.
librdkafka library used by the
ext-rdkafka extension has been updated to version 1.0.0.
libcassandra library used by the
ext-cassandra extensions has been updated to version 2.11.0 (
heroku-18 stacks only).