Facebook API Question posted in
The official documentation for the Facebook APIs can be found here.

Same user id for two different users using two different Facebook applications – Facebook api

Is it possible for two Facebook users using two different Facebook application to get same id when using graph api? I am asking because id is app scope based.

To clarify, I am thinking of this Api endpoint:

https://graph.facebook.com/v2.8/me?fields=id&access_token={{access_token}}

For example:

Let’s say that we have two Facebook applications: CatLovers and DogLovers, and two Facebook users: Sergey and Mark. Sergey is using CatLovers application and Mark is using DogLovers application.

Can Mark and Sergey get same id for this two requests:

https://graph.facebook.com/v2.8/me?fields=id&access_token={{MARKS_access_token_using_DOGLOVERS_application}}

https://graph.facebook.com/v2.8/me?fields=id&access_token={{SERGEYS_access_token_using_CATLOVERS_application}}

?

Facebook Graph Api

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3

Answers


  1. 0

    Facebook ID is of type numeric string. This is a string that looks like a number. Are you trying to store the id as an int? You should be storing this in a string!

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  2. 0

    I presume you refer to map users across different apps here? This can be done via the business mapping api: https://developers.facebook.com/docs/apps/for-business

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  3. 0

    I think you ask, whether ids from two different apps for two different users might be the same; so the possibility to get an id collision when working with two apps.

    To answer your question, every Facebook ID for every object/user/page/etc. is unique, even for different apps.
    You won’t get any id collisions here.

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