Force the version to use on Symfony documentation
This extension allows you to configure which version of the documentation you want to read (from 2.0 to 3.0+)
Google always points to the "current" version. If in the options you set version to "2.3", then you'll be redirected automatically.
Perfect for when you are working on an old (or LTS) project.
Info: this extension always redirect to the english version.