Why Are My Facebook Graph API Requests Failing After Updating to Version 2.3?

Facebook Graph API Request Issues Post Update to Version 2.3

Introduction

After the recent update to Facebook's Graph API version 2.3, users have encountered issues with API requests returning empty responses. This article addresses these concerns and provides solutions based on updates to the Facebook SDK.

Issue Description

Following the Graph API upgrade to version 2.3, certain API requests, including those for user albums and birthday data, have been returning empty results. Additionally, attempts to get user access tokens have failed.

Root Cause

The root cause of these issues lies in the Facebook SDK version 3.2.2, which is incompatible with the latest API changes. Specifically, the SDK's handling of access token responses has been affected by the new JSON format implemented in version 2.3.

Solution

To resolve these issues, it is necessary to update the getAccessTokenFromCode() and setExtendedAccessToken() functions within the SDK. The revised code (patch version 3.2.2 ):

getAccessTokenFromCode()

$response = json_decode($access_token_response);
if (!isset($response->access_token)) {
  return false;
}
return $response->access_token;

setExtendedAccessToken()

$response = json_decode($access_token_response);
if (!isset($response->access_token)) {
  return false;
}

$this->destroySession();

$this->setPersistentData(
  'access_token', $response->access_token
);

Once these functions have been updated within the SDK, the API requests should function as expected.

Additional Considerations

Note that the default SDK version for Facebook PHP SDK (v5) is now 7.0, and upgrades to the latest version are strongly recommended. Additionally, support for PHP version 5.3 has ended, and upgrades to a supported version are advised.

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