New extensions, Composer updates, smaller builds for PHP applications
Change effective on 10 March 2016
PHP applications on Heroku may now use the following new or updated extensions:
ext-gmp(bundled with PHP)
ext-ldap(bundled with PHP; includes SASL support)
ext-newrelic(version 6.0.1; auto-installed if the New Relic add-on is detected)
ext_apcu extension for PHP 7 now includes the
apcu_bc compatibility module, providing an
ext-apc compatibility layer for older software.
The Composer version used for builds and at runtime is now 1.0.0-beta1.
The builds for runtimes, extensions, web servers and libraries have been heavily optimized for reduced size, resulting in faster builds and boots due to significantly (~85%) smaller slugs.
Any platform packages listed in a project’s root
conflict sections are now ignored when resolving what platform packages to install.