php-login with cookie and Authentication Using Session

What Will I Learn?

In This Tutorial, We are learning the Login With Cookie and Authentication Using Session.

We Will learn from this tutorial How to Login with Cookie
Also Learn from this Tutorial, Login Authentication Using Session.

Requirements

There are Some requirements for learning this tutorial in the given below :

Basic Knowledge of Cookie
Basic Knowledge of Session
Establish Database Connection

Difficulty

There is no difficulty in this tutorial. It is Primary Level and easy to learn.

Basic

Tutorial Contents

In This Tutorial, We are mainly focused the php-login with Cookie and Login-Authentication Using Session.

php-Login With Cookie : First Of all We discuss What is Cookie .

Cookie : Cookie is Used to Identify a User. Cookie Saves in Browser. In php , User can Create and Retrieve the Cookies Value.

Let's we discuss php-Login using cookie - First of all , we create a Login platform using php , Login platform have Id and password for Logged In the Home page .

Let's see an example of the Login page Code -

<?php
    if(isset($_COOKIE['id'])){
        session_start();
        $_SESSION['id']=$_COOKIE['id'];
        header("location: home.php");
    }
    if($_SERVER['REQUEST_METHOD']=="POST"){
        $id = $_POST['id'];
        $password = $_POST['password'];
        $remember = $_POST['remember'];
        
        $conn = mysqli_connect("127.0.0.1", "root", "", "user_db", 3306);
        $result = mysqli_query($conn, "SELECT password FROM person WHERE id=$id");
        $row = mysqli_fetch_assoc($result);
        if($row['password']==$password){
            if(isset($remember)){
                setcookie("id", $id, time()+60);
            }
            session_start();
            $_SESSION['id']=$id;
            header("location: home.php");
        }
        else{
            echo "Invalid User ID or Password";
        }
    }
?>
<form method="post">
    Login<hr/>
    ID:<br/><input name="id"/>
    <br/>Password:<br/><input type="password" name="password"/>
    <br/><input type="checkbox" name="remember"/>Remember ME
    <hr/><input type="submit"/>
</form>

After running the program, we see the following Output-

Database Structure- Here is a database of person that's include person's id and password.

After Successfully Login , We go to the Home page .
Let's see an example of home.php code-

<?php
    session_start();
    if(isset($_SESSION['id'])==false){
        header("location: login.php");
    }
?>
<a href="logout.php">logout</a>
<?php   
    var_dump($GLOBALS);
?>

After running the home.php code we will see the following Output-

After Visiting the home page , We can easily Click Logout button and returning to the Login page -
Let's see an example of Logout .php code-

<?php
    session_start();
    //unset($_SESSION['id']);
    session_destroy();
    header("location: login.php");
?>

After clicking the Logout button , we see the following output-

Here, is the rest of the part of this tutorial discuss in the given below :

Login Authentication Using Session : Let's we discuss about the Session.

Session : In Theoritically, Between Session Starting time and Ending Time , It's performed some action. It's Client Specific.

Here is an example of Session Login Code -we create a Login platform using php , Login platform have Id and password for Logged In the Home page .

<?php
    if($_SERVER['REQUEST_METHOD']=="POST"){
        $id = $_POST['id'];
        $password = $_POST['password'];
        
        $conn = mysqli_connect("127.0.0.1", "root", "", "user_db", 3306);
        $result = mysqli_query($conn, "SELECT password FROM person WHERE id=$id");
        $row = mysqli_fetch_assoc($result);
        if($row['password']==$password){
            session_start();
            $_SESSION['id']=$id;
            header("location: home.php");
        }
        else{
            echo "Invalid User ID or Password";
        }
    }
?>
<form method="post">
    Login<hr/>
    ID:<br/><input name="id"/>
    <br/>Password:<br/><input type="password" name="password"/>
    <hr/><input type="submit"/>
</form>

After running the following program , We will see the output -

After Successfully Login , We go to the Home page .
Let's see an example of home.php code-

<?php
    session_start();
    if(isset($_SESSION['id'])==false){
        header("location: login.php");
    }
?>
<a href="logout.php">logout</a>
<?php   
    var_dump($GLOBALS);
?>

After running the program, We see the following output-

Here , We see Logout.php code- After checking the home page we logout the home page and returning to the Login page-

<?php
    session_start();
    //unset($_SESSION['id']);
    session_destroy();
    header("location: login.php");
?>

After running the program , We will see the following Output-

Curriculum

Here is an previous tutorial link-

https://steemit.com/utopian-io/@mcplexer/php-crud-operation-2-layer-architecture

Posted on Utopian.io - Rewarding Open Source Contributors