YAML国际化

I'm working in a big project.I'm thinking of a new idea to create the best way of internacianalization to many languages.

Solutions:

1.Store data as arrays - tree file system.. It's not a good way because i need to modify files "on air".
2.I18n table.All translations have a common table or relative tables.(Queries to database + database cache)
3.YAML(it's new for me)

I am reading about YAMl documentation and I like this structure..I suggest the 3rd solution. I would like to hear your opinions/suggestions.
Thank you in advance.

OK,I have no answers.
I will describe here my solutions for localization

For a common translations I used Yaml format.
(Data has this format):

Filename:common.en_US.yaml

menu:
  clients: Clients
  other: Other
  management: Management

How to use it:

l10n::get('menu/clients');

For the javaScript translations,I used the same yaml format.

java script yaml localization How to use it:
For the large dynamic data, I used l10n localization standart.
Where localization table has a prefix _l10n

l10n::get_data('table',68);