fI18nExport The sfI18nExportPlugin will make your life easier if you work on internationalized applications. Its purpose it to automate the creation and update of dictionaries for the interface translation, and it is compatible with all the dictionary storage strategies implemented in symfony……
Actually you can use a module sfGMapsGeoCode :
to encode address save these in database list geolocalised addresses http://trac.symfony-project.com/trac/wiki/sfGuardPlugin