Getting Invalid App ID error while integrating with Facebook although my App ID is correct

Question

Getting Invalid App ID error while integrating login with Facebook. I have exactly copied the code given on following Facebook page by replacing my App ID & Secret.

https://developers.facebook.com/docs/php/howto/example_facebook_login/5.0.0

I have tested the App ID by using http://graph.facebook.com/1486873724938940 and it's giving me app details correctly.

Following is the error I am getting on the screen after I click the login button.

Invalid App ID: {1486873724938940}

Answer 1

It was a very silly mistake but I am writing the answer for just in case some other newbie like me faces the same issue.

The code given by Facebook which I was using as reference went like: 'app_id' => '{app-id}'

Herein I was only replacing the app-id and not the curly brackets, therefore, was facing the issue.

What I was doing 'app_id' => '{1486873724938940}'

What I was supposed to be doing 'app_id' => '1486873724938940'