Facebook SDK5 PHP in localhost with MacOS High Sierra

Question

I have 2 nights without sleep trying to solve this problem but today I feel defeated and I come to you for help.

I'm on MacOS with High Sierra, on localhost with MAMP.

index.php

<?php
session_start();

require_once 'vendor/autoload.php';

$fb = new Facebook\Facebook([
  'app_id' => 'APP_ID',
  'app_secret' => 'APP_SECRET',
  'default_graph_version' => 'v2.10',
  ]);

$helper = $fb->getRedirectLoginHelper();

$permissions = ['email'];
$loginUrl = $helper->getLoginUrl('http://localhost/facebookphp/fb-callback.php', $permissions);

echo '<a href="' . htmlspecialchars($loginUrl) . '">Log in with Facebook!</a>';

?>

fb-callback.php

<?php
session_start();

require_once 'vendor/autoload.php';

$fb = new Facebook\Facebook([
  'app_id' => 'APP_ID',
  'app_secret' => 'APP_SECRET',
  'default_graph_version' => 'v2.10',
  ]);

$helper = $fb->getRedirectLoginHelper();

try {
  $accessToken = $helper->getAccessToken();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
  // When Graph returns an error
  echo 'Graph returned an error: ' . $e->getMessage();
  exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
  // When validation fails or other local issues
  echo 'Facebook SDK returned an error: ' . $e->getMessage();
  exit;
}

if (! isset($accessToken)) {
  if ($helper->getError()) {
    header('HTTP/1.0 401 Unauthorized');
    echo "Error: " . $helper->getError() . "
";
    echo "Error Code: " . $helper->getErrorCode() . "
";
    echo "Error Reason: " . $helper->getErrorReason() . "
";
    echo "Error Description: " . $helper->getErrorDescription() . "
";
  } else {
    header('HTTP/1.0 400 Bad Request');
    echo 'Bad request';
  }
  exit;
}

// Logged in
echo '<h3>Access Token</h3>';
var_dump($accessToken->getValue());

// The OAuth 2.0 client handler helps us manage access tokens
$oAuth2Client = $fb->getOAuth2Client();

// Get the access token metadata from /debug_token
$tokenMetadata = $oAuth2Client->debugToken($accessToken);
echo '<h3>Metadata</h3>';
var_dump($tokenMetadata);

// Validation (these will throw FacebookSDKException's when they fail)
$tokenMetadata->validateAppId('APP_ID'); // Replace {app-id} with your app id
// If you know the user ID this access token belongs to, you can validate it here
//$tokenMetadata->validateUserId('123');
$tokenMetadata->validateExpiration();

if (! $accessToken->isLongLived()) {
  // Exchanges a short-lived access token for a long-lived one
  try {
    $accessToken = $oAuth2Client->getLongLivedAccessToken($accessToken);
  } catch (Facebook\Exceptions\FacebookSDKException $e) {
    echo "<p>Error getting long-lived access token: " . $helper->getMessage() . "</p>

";
    exit;
  }

  echo '<h3>Long-lived</h3>';
  var_dump($accessToken->getValue());
}

$_SESSION['fb_access_token'] = (string) $accessToken;



// User is logged in with a long-lived access token.
// You can redirect them to a members-only page.
// header('Location: http://localhost/members.php');

Screenshots of the configuration on Facebook:

Error: Graph returned an error: The URL can not be loaded: The domain of this URL is not included in the application domains. In order to load this URL, add all domains and subdomains of your application in the "Application Domains" field in the application settings.

Answer 1

Try modify this in your fb-callback.php file

replace

$accessToken = $helper->getAccessToken();

for

$accessToken = $helper->getAccessToken("http://localhost/facebookphp/fb-callback.php");

Add the same Valid OAuth Redirect URIs field in method getAccessToken