php-symfony-http-kernel 3.4.15+dfsg-2ubuntu4 (amd64 binary) in ubuntu cosmic

 The Symfony HttpKernel Component provides a structured process for
 converting requests into responses and is flexible enough to build
 full-stack frameworks like Symfony as well as micro frameworks
 like Silex on top of it.
 .
 Symfony is a PHP framework, a set of tools and a development methodology.