FaceBook Graph API

session_start();
// added in v4.0.0
require_once 'autoload.php';
require 'functions.php';  
use facebook*\facebook*Session;
use facebook*\facebook*RedirectLoginHelper;
use facebook*\facebook*Request;
use facebook*\facebook*Response;
use facebook*\facebook*SDKException;
use facebook*\facebook*RequestException;
use facebook*\facebook*AuthorizationException;
use facebook*\GraphObject;
use facebook*\Entities\AccessToken;
use facebook*\HttpClients\facebook*CurlHttpClient;
use facebook*\HttpClients\facebook*Httpable;
// init app with app id and secret
facebook*Session::setDefaultApplication( '964320','ebc9a228c494a8fa00' );
// login helper with redirect_uri
    $helper = new facebook*RedirectLoginHelper('http://www.igentlich.com/tmp/assets/fb/fbconfig.php' );
try {
  $session = $helper->getSessionFromRedirect();
} catch( facebook*RequestException $ex ) {
  // When facebook* returns an error
} catch( Exception $ex ) {
  // When validation fails or other local issues
}
// see if we have a session
if ( isset( $session ) ) {
  // graph api request for user data
  $request = new facebook*Request( $session, 'GET', '/me' );
  $response = $request->execute();
  // get response
  $graphObject = $response->getGraphObject();
     	echo $fbid = $graphObject->getProperty('id');              // To Get facebook* ID
 	echo $fbname = $graphObject->getProperty('first_name'); // To Get facebook* full name
	echo $fbemail = $graphObject->getProperty('last_name');    // To Get facebook* email ID
	/* ---- Session Variables -----*/
	    $_SESSION['FBID'] = $fbid;           
        $_SESSION['FULLNAME'] = $fbname;
	    $_SESSION['EMAIL'] =  $fbemail;
    /* ---- header location after session ----*/


        require 'dbconfig.php';
    	$check = mysql_query("SELECT * FROM `ig_users` WHERE `email` = '$femail'");
	$check = mysql_num_rows($check);
	if (empty($check)) { 	
	$query = "INSERT INTO `ig_users` (`name`,`email`) VALUES ('$fbname','$fbemail')";
	mysql_query($query);	
	}



  //header("Location: index.php");
} else {
  $loginUrl = $helper->getLoginUrl();
 header("Location: ".$loginUrl);
}
?>