Need to go https://developers.facebook.com/apps/ and click on add a new group button to make the app ID.
Choose Website
Give an app name and click on Create New Facebook App ID
Click on Create app ID
Click on Skip Quick Test

fbconfig.php file overview

Now open fbconfig.php file and add you app ID and app Secrete

FacebookSession::setDefaultApplication( 'your app ID','App Secrete ' );

// login helper with redirect_uri

   $helper = new FacebookRedirectLoginHelper('You web address' );

Finally fbconfig.php file as shown below −

<?php

  

   session_start();

  

   // added in v4.0.0

   require_once 'autoload.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;

   use Facebook\Entities\AccessToken;

   use Facebook\HttpClients\FacebookCurlHttpClient;

   use Facebook\HttpClients\FacebookHttpable;

  

   // init app with app id and secret

   FacebookSession::setDefaultApplication( '496544657159182','e6d239655aeb3e496e52fabeaf1b1f93' );

  

   // login helper with redirect_uri

   $helper = new FacebookRedirectLoginHelper('http://www.tecklearn.com/' );

  

   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 after session ----*/

      header("Location: index.php");

   }else {

      $loginUrl = $helper->getLoginUrl();

      header("Location: ".$loginUrl);

   }

?>

Login page Overview

<?php

   session_start();

   session_unset();

  

   $_SESSION['FBID'] = NULL;

   $_SESSION['FULLNAME'] = NULL;

   $_SESSION['EMAIL'] =  NULL;

   header("Location: index.php");       

?>

Index.php

Index page is as shown below.

<?php

   session_start();

?>

<html xmlns:fb = "http://www.facebook.com/2008/fbml">

  

   <head>

      <title>Login with Facebook</title>

      <link

         href = "http://www.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css"

         rel = "stylesheet">

   </head>

  

   <body>

      <?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>

           

            <div class = "span4">

                                                            

               <ul class = "nav nav-list">

                  <li class = "nav-header">Image</li>

                                                                                           

                  <li><img src = "https://graph.facebook.com/<?php

                     echo $_SESSION['FBID']; ?>/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>

              

                  <li class = "nav-header">Facebook Email</li>

                                                                                           

                  <li><?php echo $_SESSION['EMAIL']; ?></li>

              

                  <div><a href="logout.php">Logout</a></div>

                                                                                           

               </ul>

                                                                           

            </div>

         </div>

        

         <?php else: ?>     <!-- Before login -->

        

         <div class = "container">

            <h1>Login with Facebook</h1>

            Not Connected

           

            <div>

               <a href = "fbconfig.php">Login with Facebook</a>

            </div>

           

            <div>

               <a href = "http://www.tecklearn.com" 

                  title = "Login with facebook">More information about Tecklearn</a>

            </div>

         </div>

        

      <?php endif ?>

     

   </body>

</html>

It will produce the result. Before trying this example, please logout your face book account in your browser.

Logout Facebook

Below code is used to logout facebook.

<?php

   session_start();.

   session_unset();

  

   $_SESSION['FBID'] = NULL;

   $_SESSION['FULLNAME'] = NULL;

   $_SESSION['EMAIL'] =  NULL;

   header("Location: index.php");       

?>

PHP – MySQL Login

This tutorial demonstrates how to create a login page with MySQL Data base. Before enter into the code part, You would need special privileges to create or to delete a MySQL database. So assuming you have access to root user, you can create any database using mysql mysqladmin binary.

Config.php

Config.php file is having information about MySQL Data base configuration.

<?php   define('DB_SERVER', 'localhost:3036');   
define('DB_USERNAME', 'root');   
define('DB_PASSWORD', 'rootpassword');   
define('DB_DATABASE', 'database');   
$db = mysqli_connect(DB_SERVER,DB_USERNAME,DB_PASSWORD,DB_DATABASE);
?>

Login.php

<?php   
include("config.php");   
session_start();      
if($_SERVER["REQUEST_METHOD"] == "POST") 
{
      // username and password sent from form             
$myusername = mysqli_real_escape_string($db,$_POST['username']);      
$mypassword = mysqli_real_escape_string($db,$_POST['password']);             
$sql = "SELECT id FROM admin WHERE username = '$myusername' and passcode = '$mypassword'";      
$result = mysqli_query($db,$sql);      
$row = mysqli_fetch_array($result,MYSQLI_ASSOC);      
$active = $row['active'];            
$count = mysqli_num_rows($result);            
// If result matched $myusername and $mypassword, table row must be 1 row                                     if($count == 1) {         session_register("myusername");         $_SESSION['login_user'] = $myusername;                  header("location: welcome.php");      }else {         $error = "Your Login Name or Password is invalid";      }   }?><html>      <head>      <title>Login Page</title>            <style type = "text/css">         body {            font-family:Arial, Helvetica, sans-serif;            font-size:14px;         }         label {            font-weight:bold;            width:100px;            font-size:14px;         }         .box {            border:#666666 solid 1px;         }      </style>         </head>      <body bgcolor = "#FFFFFF">                     <div align = "center">         <div style = "width:300px; border: solid 1px #333333; " align = "left">            <div style = "background-color:#333333; color:#FFFFFF; padding:3px;"><b>Login</b></div>                                                                         <div style = "margin:30px">                              <form action = "" method = "post">                  <label>UserName  :</label><input type = "text" name = "username" class = "box"/><br /><br />                  <label>Password  :</label><input type = "password" name = "password" class = "box" /><br/><br />                  <input type = "submit" value = " Submit "/><br />               </form>                              <div style = "font-size:11px; color:#cc0000; margin-top:10px"><?php echo $error; ?></div>                                                                                        </div>                                                                      </div>                                                    </div>    </body></html>

welcome.php

After successful login, it will display welcome page.

<?php   include('session.php');?><html">      
<head>     
<title>Welcome </title>   
</head>      
<body>      
<h1>Welcome 
<?php echo $login_session; 
?>
</h1>       
<h2><a href = "logout.php">Sign Out</a></h2>   
</body>   
</html>

Logout page

Logout page is having information about how to logout from login session.

<?php   session_start();      
if(session_destroy()) 
{      
header("Location: login.php");   
}
?>

session.php

Session.php will verify the session, if there is no session it will redirect to login page.

<?php   include('config.php');   
session_start();      
$user_check = $_SESSION['login_user'];      
$ses_sql = mysqli_query($db,"select username from admin where username = '$user_check' ");      
$row = mysqli_fetch_array($ses_sql,MYSQLI_ASSOC);      
$login_session = $row['username'];      
if(!isset($_SESSION['login_user']))
{      
header("location:login.php");      
die();   
}
?>

PHP – PayPal Integration

PayPal is a payment processing system, We can integrate PayPal with websites by using with php.

PayPal integration file system

PayPal integration file system included 4 files as shown below.

php − This file has included API user name, password and signature.
php − This file has included PayPal Services, which is used to call PayPal services.
php − This file has included a form with minimum fields required to make payment process and it will return payment success or failure.
php − This page has used to send the user the data to PayPal. It acts as an adapter between PayPal and user form.

The user has to download a PayPal SDK file from here and exact a zip file. The zip file contains four php files, We don’t need to change any file except constants.php

The constants.php file contains code as shown below −

<?php   define('API_USERNAME', 'YOUR USER NAME HERE');   
define('API_PASSWORD', 'YOUR PASSWORD HERE');   
define('API_SIGNATURE', 'YOUR API SIGNATURE HERE');   
define('API_ENDPOINT', 'https://api-3t.paypal.com/nvp');   
define('USE_PROXY',FALSE);   define('PROXY_HOST', '127.0.0.1');   
define('PROXY_PORT', '808');   
define('PAYPAL_URL', 'https://www.PayPal.com/webscr&cmd=_express-checkout&token=');   
define('VERSION', '53.0');?>

The user will declare User Name, password and signature in above syntax which are placed in constants.php. This is an experimental example so the last amount will be added to sandbox’s account.

So, this brings us to the end of blog. This Tecklearn ‘Login with Facebook and Paypal Integration in PHP’ blog helps you with commonly asked questions if you are looking out for a job in PHP Programming. If you wish to learn Java and build a career Java Programming domain, then check out our interactive, Java and JEE Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

https://www.tecklearn.com/course/java-and-jee-training/

Java and JEE Training

About the Course

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Why Should you take Java and JEE Training?

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Used by more than 10 Million developers worldwide to develop applications for 15 Billion devices.
Java is one of the most popular programming languages in the software world. Rated #1 in TIOBE Popular programming languages index (15th Consecutive Year)

What you will Learn in this Course?

Introduction to Java

Java Fundamentals
Introduction to Java Basics
Features of Java
Various components of Java language
Benefits of Java over other programming languages
Key Benefits of Java

Installation and IDE’s for Java Programming Language

Installation of Java
Setting up of Eclipse IDE
Components of Java Program
Editors and IDEs used for Java Programming
Writing a Simple Java Program

Data Handling and Functions

Data types, Operations, Compilation process, Class files, Loops, Conditions
Using Loop Constructs
Arrays- Single Dimensional and Multi-Dimensional
Functions
Functions with Arguments

OOPS in Java: Concept of Object Orientation

Object Oriented Programming in Java
Implement classes and objects in Java
Create Class Constructors
Overload Constructors
Inheritance
Inherit Classes and create sub-classes
Implement abstract classes and methods
Use static keyword
Implement Interfaces and use it

Polymorphism, Packages and String Handling

Concept of Static and Run time Polymorphism
Function Overloading
String Handling –String Class
Java Packages

Exception Handling and Multi-Threading

Exception handling
Various Types of Exception Handling
Introduction to multi-threading in Java
Extending the thread class
Synchronizing the thread

File Handling in Java

Input Output Streams
io Package
File Handling in Java

Java Collections

Wrapper Classes and Inner Classes: Integer, Character, Boolean, Float etc
Applet Programs: How to write UI programs with Applet, Java.lang, Java.io, Java.util
Collections: ArrayList, Vector, HashSet, TreeSet, HashMap, HashTable

Java Database Connectivity (JDBC)

Introduction to SQL: Connect, Insert, Update, Delete, Select
Introduction to JDBC and Architecture of JDBC
Insert/Update/Delete/Select Operations using JDBC
Batch Processing Transaction
Management: Commit and Rollback

Java Enterprise Edition – Servlets

Introduction to J2EE
Client Server architecture
URL, Port Number, Request, Response
Need for servlets
Servlet fundamentals
Setting up a web project in Eclipse
Configuring and running the web app with servlets
GET and POST request in web application with demo
Servlet lifecycle
Servlets Continued
Session tracking and filter
Forward and include Servlet request dispatchers

Java Server Pages (JSP)

Fundamentals of Java Server Page
Writing a code using JSP
The architecture of JSP
JSP Continued
JSP elements: Scriptlets, expressions, declaration
JSP standard actions
JSP directives
Introduction to JavaBeans
ServletConfig and ServletContext
Servlet Chaining
Cookies Management
Session Management

Hibernate

Introduction to Hibernate
Introduction to ORM
ORM features
Hibernate as an ORM framework
Hibernate features
Setting up a project with Hibernate framework
Basic APIs needed to do CRUD operations with Hibernate
Hibernate Architecture

POJO (Plain Old Java Object)

POJO (Plain Old Java Object)
Persistent Objects
Lifecycle of Persistent Object

Spring

Introduction to Spring
Spring Fundamentals
Advanced Spring

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