How-to articles, tricks, and solutions about FACEBOOK

To get the email of a user through the Facebook Graph API, you will need to follow some steps.

This error message appears when the SDK is being used to make an OAuth request to Facebook, and the "state" parameter in the URL doesn't match the "state" value that was stored in the user's session.

To display a user's profile picture using the Facebook Graph API in PHP, you can make a GET request to the /{user-id}/picture endpoint.

The InvalidStateException is thrown by Laravel's Socialite package when the state parameter provided in the OAuth redirect URL does not match the one stored in the session.

This message typically indicates that there is an issue with the authentication process.

Here is an example of how you can post to a Facebook fan page using the Facebook PHP SDK: