Facebook PHP SDK v5 升級

v4.0：

session_start();
 
// Facebook app settings
$app_id       = '';
$app_secret   = '';
$redirect_uri = '';
 
// Requested permissions for the app - optional.
$permissions = array(
    'email',
    'user_location',
    'user_birthday'
);
 
// Define the root directoy.
define( 'ROOT', dirname( __FILE__ ) . '/' );
 
// Autoload the required files
require_once( ROOT . 'vendor/autoload.php' );
 
use Facebook\FacebookSession;
use Facebook\FacebookRequest;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\GraphUser;
 
// Initialize the SDK.
FacebookSession::setDefaultApplication( $app_id, $app_secret );



v5.0：

session_start();
 
// Include the required Composer dependencies.
require_once( 'vendor/autoload.php' );
 
// Initialize the Facebook PHP SDK v5.
$fb = new Facebook\Facebook([
  'app_id'                => '{app-id}',
  'app_secret'            => '{app-secret}',
  'default_graph_version' => 'v2.3',
]);

v4.0：

// Initialize the Facebook SDK.
FacebookSession::setDefaultApplication( $app_id, $app_secret );
$helper = new FacebookRedirectLoginHelper( $redirect_uri );


v5.0：

// Check if the user is logged in.
$helper = $fb->getRedirectLoginHelper();

v4.0：

// Authorize the user.
try {
    if ( isset( $_SESSION['access_token'] ) ) {
        // Check if an access token has already been set.
        $session = new FacebookSession( $_SESSION['access_token'] );
    } else {
        // Get access token from the code parameter in the URL.
        $session = $helper->getSessionFromRedirect();
    }
} catch( FacebookRequestException $ex ) {
 
    // When Facebook returns an error.
    print_r( $ex );
} catch( \Exception $ex ) {
 
    // When validation fails or other local issues.
    print_r( $ex );
}
if ( isset( $session ) ) {
 
    // Retrieve & store the access token in a session.
    $_SESSION['access_token'] = $session->getToken();
 
    $logoutURL = $helper->getLogoutUrl( $session, 'http://your-app-domain.com/logout' );
 
    // Logged in
    echo 'Successfully logged in! <a href="' . $logoutURL . '">Logout</a>';
} else {
 
    // Generate the login URL for Facebook authentication.
    $loginUrl = $helper->getLoginUrl();
    echo '<a href="' . $loginUrl . '">Login</a>';
}


v.5.0：

try {
  $accessToken = $helper->getAccessToken();
} catch( Facebook\Exceptions\FacebookSDKException $e ) {
 
  // There was an error communicating with Graph
  echo $e->getMessage();
  exit;
}
 
if ( isset( $accessToken ) ) {
 
  // User authenticated your app!
  // Save the access token to a session and redirect
  $_SESSION['facebook_access_token'] = ( string ) $accessToken;
 
  // Register or log the user in...
  exit;
}
elseif ( $helper->getError() ) {
 
  // The user denied the request
  // You could log this data . . .
  var_dump( $helper->getError() );
  var_dump( $helper->getErrorCode() );
  var_dump( $helper->getErrorReason() );
  var_dump( $helper->getErrorDescription() );
 
  // You could display a message to the user
  // being all like, "What? You don't like me?"
  exit;
}
 
// If they've gotten this far, they shouldn't be here
http_response_code(400);
exit;