Basic Skeleton for using the Facebook PHP SDK v.4.4.0

 

<? session_start();
 
require_once( 'Facebook/FacebookSession.php' );
require_once( 'Facebook/FacebookRedirectLoginHelper.php' );
require_once( 'Facebook/FacebookRequest.php' );
require_once( 'Facebook/FacebookResponse.php' );
require_once( 'Facebook/FacebookSDKException.php' );
require_once( 'Facebook/FacebookRequestException.php' );
require_once( 'Facebook/FacebookAuthorizationException.php' );
require_once( 'Facebook/GraphObject.php' );
 
use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
 
// init app with app id (APPID) and secret (SECRET)
$appID = 'YOUR_APP_ID';
$appSecret = 'YOUR_APP_SECRET';
$appLoginURL = 'https://YOUR_APP_LOGIN_URL';
$appLogoutURL = 'https://YOUR_APP_LOGOUT_URL';

FacebookSession::setDefaultApplication($appID, $appSecret);

$helper = new FacebookRedirectLoginHelper($appLoginURL ); // login helper with redirect_uri
 
try 
{
  $session = $helper->getSessionFromRedirect();
} 
catch( FacebookRequestException $ex )
{
  // When Facebook returns an error
} 
catch( Exception $ex )
{
  // When validation fails or other local issues
}
 

if ( isset( $session ) ) // see if we have a session
{ 
  $request = new FacebookRequest( $session, 'GET', '/me' ); // graph api request for user data
  $response = $request->execute();
 
  $graphObject = $response->getGraphObject(); // get response
  $graphObject_keys = array("id", "email", "first_name", "last_name", "gender", "link", "locale", "name", "timezone", "updated_time", "verified");
  for ($i=0; $i<count($graphObject_keys); $i++){
      echo $graphObject_keys[$i] . " : " . $graphObject->getProperty($graphObject_keys[$i]) . "<br/>";
  }
  
  $logoutURL = $appLogoutURL  . '">Logout</a>';
  echo '<a href="' . $helper->getLogoutUrl( $session, $logoutURL);
} //end if
else
{
  echo '<a href="' . $helper->getLoginUrl() . '">Login</a>'; // show login url
} //end else

?>