Login with facebook using PHP ( Demo and Download )

Login with facebook : You can use facebook login in your websites to allow users to login using their facebook account.you don’t need an extra registration and user management for your sites.you can also manage users in your facebook application page. This article explains how to integrate “Facebook login” to your websites using Facebook PHP SDK with an example and demo.

Login with facebook ( Version: 4 – Updated )

Create Facebook APP ID and APP secret .
Step 1 » Goto https://developers.facebook.com/apps/ and Click Add a New App .
» Choose Website
» Choose Name for you App and Click Create New Facebook App ID
» Choose a category for you App and click Create App ID
» Now Click Skip Quick Test
Login with facebook App ID Creation
Step 2 » Under settings, Provide values for App domain ( Eg:www.krizna.com ) and Contact Email and click Add Platform.
Login with facebook domain name
Provide Values for Site URL and Mobile site URl ( Optional )
Login with facebook site name
Step 3 » Now under Status & Review, Click the button to make you App live .
Login with facebook make live

fbconfig.php file overview

Step 4 » Download the Demo package here Login with facebook .
Step 5 » Now open fbconfig.php file and enter your app ID, secret and change domain name .

// init app with app id and secret
FacebookSession::setDefaultApplication( '64296382121312313','8563798aasdasdasdweqwe84' );
// login helper with redirect_uri
    $helper = new FacebookRedirectLoginHelper('https://www.krizna.com/fbconfig.php' );

Step 6 » Finally full code of fbconfig.php file. See the commented lines for more details

// added in v4.0.0
require_once 'autoload.php';
//require 'functions.php';  
use FacebookFacebookSession;
use FacebookFacebookRedirectLoginHelper;
use FacebookFacebookRequest;
use FacebookFacebookResponse;
use FacebookFacebookSDKException;
use FacebookFacebookRequestException;
use FacebookFacebookAuthorizationException;
use FacebookGraphObject;
use FacebookEntitiesAccessToken;
use FacebookHttpClientsFacebookCurlHttpClient;
use FacebookHttpClientsFacebookHttpable;
// init app with app id and secret
FacebookSession::setDefaultApplication( '64296382121312313','8563798aasdasdasdweqwe84' );
// login helper with redirect_uri
    $helper = new FacebookRedirectLoginHelper('https://www.krizna.com/fbconfig.php' );
try {
  $session = $helper->getSessionFromRedirect();
} catch( FacebookRequestException $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 FacebookRequest( $session, 'GET', '/me' );
  $response = $request->execute();
  // get response
  $graphObject = $response->getGraphObject();
     	$fbid = $graphObject->getProperty('id');              // To Get Facebook ID
 	    $fbfullname = $graphObject->getProperty('name'); // To Get Facebook full name
	    $femail = $graphObject->getProperty('email');    // To Get Facebook email ID
	/* ---- Session Variables -----*/
	    $_SESSION['FBID'] = $fbid;           
        $_SESSION['FULLNAME'] = $fbfullname;
	    $_SESSION['EMAIL'] =  $femail;
  header("Location: index.php");
} else {
  $loginUrl = $helper->getLoginUrl();
 header("Location: ".$loginUrl);

logout.php file overview

Logout.php file is used only to destroy facebook session and return back to your home page .
Step 7 » Enter your home page in the code to redirect after logout.

header("Location: index.php");        // you can enter home page here ( Eg : header("Location: " ."https://www.krizna.com/home.php"); 

index.php file overview

Step 8 » You can change this file as per your need . Split this file into 2 parts before login and after login.

<!doctype html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
    <title>Login with facebook</title>
   --- --- --- 
  css stuff
   --- --- ----
  <?php if ($_SESSION['FBID']): ?>    
              -- --- - - - -- - 
           Display content After user login
             -- -- - --- ---- -- -  
    <?php else: ?>     
              -- --- - - - -- - 
           Display content before login
             -- -- - --- ---- -- -  
    <?php endif ?>

Finally full code of index.php file .

<!doctype html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
    <title>Login with Facebook</title>
<link href="http://www.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css" rel="stylesheet"> 
  <?php if ($_SESSION['FBID']): ?>      <!--  After user login  -->
<div class="container">
<div class="hero-unit">
  <h1>Hello <?php echo $_SESSION['USERNAME']; ?></h1>
  <p>Welcome to "facebook login" tutorial</p>
<div class="span4">
 <ul class="nav nav-list">
<li class="nav-header">Image</li>
	<li><img src="https://graph.facebook.com/<?php echo $_SESSION['USERNAME']; ?>/picture"></li>
<li class="nav-header">Facebook ID</li>
<li><?php echo  $_SESSION['FBID']; ?></li>
<li class="nav-header">Facebook fullname</li>
<li><?php echo $_SESSION['FULLNAME']; ?></li>
<div><a href="logout.php">Logout</a></div>
    <?php else: ?>     <!-- Before login --> 
<div class="container">
<h1>Login with Facebook</h1>
           Not Connected
      <a href="fbconfig.php">Login with Facebook</a></div>
    <?php endif ?>

That’s it . now facebook users can login into your websites using facebook login ID.

Store the User information

» You can store the user info locally . Create a mysql database and import below table structure .

  `UID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `Fuid` varchar(100) NOT NULL,
  `Ffname` varchar(60) NOT NULL,
  `Femail` varchar(60) DEFAULT NULL,

» Open dbconfig.php file and change the DB vlaues.

define('DB_SERVER', 'localhost');
define('DB_USERNAME', 'username');    // DB username
define('DB_PASSWORD', 'password');    // DB password
define('DB_DATABASE', 'database');      // DB name
$connection = mysql_connect(DB_SERVER, DB_USERNAME, DB_PASSWORD) or die( "Unable to connect");
$database = mysql_select_db(DB_DATABASE) or die( "Unable to select database");

» functions.php file contains a function to update the user information .

	require 'dbconfig.php';
	function checkuser($fuid,$ffname,$femail){
    	$check = mysql_query("select * from Users where Fuid='$fuid'");
		$check = mysql_num_rows($check);
		if (empty($check)) { // if new user . Insert a new record		
		$query = "INSERT INTO Users (Fuid,Ffname,Femail) VALUES ('$fuid','$ffname','$femail')";
		} else {   // If Returned user . update the user record		
		$query = "UPDATE Users SET Ffname='$ffname', Femail='$femail' where Fuid='$fuid'";

» Uncomment the below lines in fbconfig.php
require 'functions.php'; // Include functions
checkuser($fbid,$fbfullname,$femail); // To update local DB
That’s it .. now you can store the values locally .

Download contains all the configuration files .
Good luck


  1. not working for me

    after clicking on log in

    Login with Facebook
    Not Connected

    Login with Facebook

    View Post

    following coming

    The page isn’t redirecting properly

    Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

    This problem can sometimes be caused by disabling or refusing to accept cookies.

  2. hello, I am using this script, it is nice and helpful but there is some problem i am facing.
    When i am refreshing the page or going to another page of website , the session expires. I need to remain logged in . Please help.

  3. Hy first i would like to thank for you all for the hard work:) New in website building i need help with the » Uncomment the below lines in fbconfig.php. I do not have those two lines in fbconfig.php so do i have to put it manually to file or ?? I can login and all but it does not store it to database. Sorry for dumb question, i know it is easy so please help me out. Thank you once more.

  4. Nice work
    Need help with last thing » Uncomment the below lines in fbconfig.php.
    How to do it ? Sorry for dumb question.
    Thank you

  5. why am i having this error?
    Can anyone help me with this?.. thanks

    Sorry, something went wrong.

    We’re working on getting this fixed as soon as we can.

    Go Back

    Facebook © 2017 · Help

  6. fb while login it goesto login page and rest of them is fine, but its not storing the user name details in to database wat i have to do?

  7. hiii i have a problem… i would insert users facebook into database but i don’t know where i must place require ‘functions.php’; and checkuser($fbid,$fbfullname,$femail);
    can you help me?

  8. Dear All,

    I have a problem with the final instruction – the mentioned lines does not exist in the fbconfig.php:

    » Uncomment the below lines in fbconfig.php
    require ‘functions.php’; // Include functions

    checkuser($fbid,$fbfullname,$femail); // To update local DB

    Where should I insert it? I want to insert the data to my db.

  9. Fatal error: Cannot use object of type stdClass as array in […] src/Facebook/FacebookRedirectLoginHelper.php on line 186

    Have anybody an idea why the error are there? To days all was perfect, but today the error is showen without any changes.

  10. Since i was benefited a lot from this article hence i would to bring to the notice of the author that their is a change i suppose in the access_token alive timing of the Facebook hence a error of

    Fatal error: Cannot use object of type stdClass as array in /home1/gkrizna/public_html/Domains/kdemos/1353/src/Facebook/FacebookRedirectLoginHelper.php on line 186
    is displayed in your demo link also

    To resolve this please this answer on StackOverflow which has helped me resolve the issue http://stackoverflow.com/a/43069488 . the answer is wondeful and solved the issue. None the less thank you for such a wonderful article

  11. I’m getting this error:
    “Fatal error: Cannot use object of type stdClass as array in C:xampphtdocsloginfacebook1353srcFacebookFacebookRedirectLoginHelper.php on line 186”
    Please help…

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