Question

I’m trying to get the access token of my app using graph api, by requesting the following string:

https://graph.facebook.com/oauth/authorize?type=user_agent&client_id=app_id&redirect_uri=canvas_page&scope=read_friendlists

This redirects to: canvas_page/#access_token=xxx&expires_in=4124&code=A…

But i am not sure how i can parse this with PHP, so that i eventually can make a json request to get the friendlist.

I hope you may be able to guide me 🙂

Thank you

Answer 1

Are you using the Facebook PHP sdk?
https://github.com/facebook/php-sdk

You can use it like this:

$facebook = new Facebook(array(
  'appId'  => 'your_app_id',
  'secret' => 'your_app_secret',
));

// Get User ID
$user = $facebook->getUser();


if ($user) {
  try {
    // Proceed knowing you have a logged in user who's authenticated.
    $user_profile = $facebook->api('/me');
 } catch (FacebookApiException $e) {
     error_log($e);
    $user = null;
  }
}

if ($user) {
  $logoutUrl = $facebook->getLogoutUrl();
} else {
  $loginUrl = $facebook->getLoginUrl();
}

You can use the $loginUrl to make a link where the user needs to click that will authorize your application if they haven’t done so already

Then you can make calls to the graph api like this:

$friends = $facebook->api('/user_id/friends');