How to Create Login and Logout Page with Session and Cookies in PHP

Updated on: February 15, 2021

create a login and logout page with session and cookies in php

This tutorial will give you an idea on how to use the stored cookie to log in, and I’ve added a “logout” function that destroys both session and cookie.

Table of Contents

Creating a Database

First, we’re going to create a database that contains our data.

1. Open phpMyAdmin.

2. Click databases, create a database and name it as “cookie”.

3. After creating a database, click the SQL and paste the below code. See image below for detailed instruction.

CREATE TABLE `user` (
  `userid` INT(11) NOT NULL AUTO_INCREMENT,
  `username` VARCHAR(30) NOT NULL,
  `password` VARCHAR(30) NOT NULL,
  `fullname` VARCHAR(60) NOT NULL,
PRIMARY KEY (`userid`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

Inserting Data into a Database

Next, we insert users into our database. This will be our reference when we login.
1. Click the database the we created earlier.
2. Click SQL and paste the code below.

INSERT INTO `user` (`username`, `password`, `fullname`) VALUES
('neovic', 'devierte', 'neovic devierte'),
('lee', 'ann', 'lee ann');

Creating a Connection

Next step is to create a database connection and save it as “conn.php”. This file will serve as our bridge between our form and our database. To create the file, open your HTML code editor and paste the code below after the tag.

<?php
$conn = mysqli_connect("localhost","root","","cookie");
 
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }
?>

Creating a Login Form

Next is to create our login form. In this form, I’ve added a code that if ever there’s a cookie stored, it will show in the login inputs. To create the form, open your HTML code editor and paste the code below after the tag. We name this as “index.php”.

<?php
    session_start();
    include('conn.php');
?>
<!DOCTYPE html>
<html>
<head>
<title>Login Using Cookie with Logout</title>
</head>
<body>
    <h2>Login Form</h2>
    <form method="POST" action="login.php">
    <label>Username:</label> <input type="text" value="<?php if (isset($_COOKIE["user"])){echo $_COOKIE["user"];}?>" name="username">
    <label>Password:</label> <input type="password" value="<?php if (isset($_COOKIE["pass"])){echo $_COOKIE["pass"];}?>" name="password"><br><br>
    <input type="checkbox" name="remember"> Remember me <br><br>
    <input type="submit" value="Login" name="login">
    </form>
 
    <span>
    <?php
        if (isset($_SESSION['message'])){
            echo $_SESSION['message'];
        }
        unset($_SESSION['message']);
    ?>
</span>
</body>
</html>

Creating a Login Success Page

Next, we create a go to page if login is successful. This page will show the user that login successfully. We name this page as “success.php”. In this page, I’ve added the logout link to destroy both session and cookie.

<?php
    session_start();
 
    if (!isset($_SESSION['id']) ||(trim ($_SESSION['id']) == '')) {
        header('index.php');
        exit();
    }
    include('conn.php');
    $query=mysqli_query($conn,"select * from user where userid='".$_SESSION['id']."'");
    $row=mysqli_fetch_assoc($query);
?>
<!DOCTYPE html>
<html>
<head>
<title>Setting Up Cookie on User Login</title>
</head>
<body>
    <h2>Login Success</h2>
    <?php echo $row['fullname']; ?>
    <br>
    <a href="logout.php">Logout</a>
</body>
</html>

Creating a Logout Script

Last is our logout script. This script destroys both our session and cookie then redirect us back to our login page. We name the script as “logout.php”.

<?php
    session_start();
    session_destroy();
 
    if (isset($_COOKIE["user"]) AND isset($_COOKIE["pass"])){
        setcookie("user", '', time() - (3600));
        setcookie("pass", '', time() - (3600));
    }
 
    header('location:index.php');
 
?>

Happy Coding!

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