An introduction to Symfony's Translation component
In this video we take a walk-through of what internationalization (i18n) is, how the codes are put together, and how Symfony looks for certain file names to build its translation libraries.
Just to clarify, as this gets asked on many projects where translation is required, no, Symfony's translation component does not magically know how to convert your text from English to German, French to Italian, Japanese to Urdu... you have to provide these translations. Symfony is not the computer from the Starship Enterprise... or more specifically, it is not the universal translator. If only :D