Facebook app-scoped id digits only? -


is facebook app-scoped id digits only? im working on able login username or fb-login, , im planning store username , fb-id in same column login, if facebook app-scoped id digits only, force usernames @ least contains 1 alphabet avoid duplication , inteference app-scoped id

according the docs, facebook id "numeric string". seems indicate indeed contain digits. personally, i've never seen other digits, , although it's theoretically possible api change in future, it's unlikely change particular thing.

so, plan should work.


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