Why doesn't the simplest call to the Facebook API work?

Question

Facebook

Hello,
simple question. With this handling:

$response = file_get_contents("https://graph.facebook.com/me?access_token=xxxxxxxxxxxxxxxxx");

should return something like

{
"error": {
"message": "Invalid OAuth access token.",
"type": "OAuthException",
"code": 190
}
}

And an empty variable is returned. What's wrong?

Answer 1

Clearly the wrong token.