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Tutorial to create a login system using HTML, PHP, and MySQL

This is a tutorial for creating a login system with the help of HTML, PHP, and MySQL. Your website needs to be dynamic and your visitors need to have instant access to it. Therefore, they want to log in as many times as possible. The login authentication system is very common for any web application. It allows registered users to access the website and members-only features. It is also helpful when we want to store information for users. It covers everything from shopping sites, educational sites, and membership sites, etc.

This tutorial is covered in 4 parts.

Table of Contents

1) Building a Signup system

In this part, We will create a signup system that allows users to create a new account to the system. Our first step is to create a HTML registration form. The form is pretty simple to create. It only asks for a name, email, password, and confirm password. Email addresses will be unique for every user. Multiple accounts for the same email address are not allowed. It will show an error message to the users who try to create multiple accounts with the same email address.

Step 1: Creating Registration Form in HTML

We will create a PHP file named register.php with the following code in it. This is a simple HTML form with some basic validation. If you are not familiar with HTML then you can get it from many online sites who give ready-made html5 login form templates.

       
 
 
Register
 
Please fill this form to create an account.
 
 
Full Name 
Email Address 
 
Password 
Confirm Password 
Already have an account? Login here.
  
 
 
  

The output of the above HTML form will look like this.

All the input fields are required by adding the «required» attribute which is the default HTML attribute. The use of type=»email» will validate the email address provided by users and gives an error if the email address is not valid. For the registration form, we have used bootstrap for rapid development. If you want to save your time on HTML code you can always use some free html5 templates for your project.

Step 2: Creating the MySQL Database Table

You will need to create a new database with any suitable name you want. After that please execute the below SQL query to create the user’s table inside your newly created MySQL database.

CREATE TABLE `users` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(75) NOT NULL, `password` varchar(255) NOT NULL, `email` varchar(100) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `email` (`email`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1;

Step 3: Creating Database Configuration File

Now, we have created the users table. Let’s create a new PHP file named config.php to connect with the MySQL database. Paste the following code in the config.php file and change the database name to whatever you choose while creating the database.

Step 4: Creating a Session File

Let’s create a file named session.php. In this file, we will start the session and check if a user is already logged in, if yes then we will redirect the user to welcome.php file.

Step 5: Create Registration Form in PHP

Finally, it’s time to create a PHP code that allows users to register their accounts into the system. This PHP code will alert users with an error if any user is already registered with the same email address.

Replace the following code in the register.php file.

prepare("SELECT * FROM users WHERE email = ?")) < $error = ''; // Bind parameters (s = string, i = int, b = blob, etc), in our case the username is a string so we use "s" $query->bind_param('s', $email); $query->execute(); // Store the result so we can check if the account exists in the database. $query->store_result(); if ($query->num_rows > 0) < $error .= '
The email address is already registered!
'; > else < // Validate password if (strlen($password ) < 6) < $error .= '
Password must have atleast 6 characters.
'; > // Validate confirm password if (empty($confirm_password)) < $error .= '
Please enter confirm password.
'; > else < if (empty($error) && ($password != $confirm_password)) < $error .= '
Password did not match.
'; > > if (empty($error) ) < $insertQuery = $db->prepare("INSERT INTO users (name, email, password) VALUES (?, ?, ?);"); $insertQuery->bind_param("sss", $fullname, $email, $password_hash); $result = $insertQuery->execute(); if ($result) < $error .= '
Your registration was successful!
'; > else < $error .= '
Something went wrong!
'; > > > > $query->close(); $insertQuery->close(); // Close DB connection mysqli_close($db); > ?>       
 
 
Register
 
Please fill this form to create an account.
   
 
Full Name 
Email Address 
 
Password 
Confirm Password 
Already have an account? Login here.
  
 
 
   

Once user click on submit button it will check if $_SERVER[«REQUEST_METHOD»] == «POST» and $_POST[‘submit’] variable has been set. For security concerns, we always suggest not to store the password as plain text in the database. We have used password_hash() function which creates a new password hash using a strong one-way hashing algorithm.

The above PHP script will validate that no user is registered with the same email address and also validate password. After validation is confirmed we store the user-provided information in the users’ table and alert the user that registration was successful.

2) Building a Login System

In this part, we will create a login form to allow users to access the restricted area of the system. In our case, the restricted area is a welcome page which we will cover in the next part.

Step 1: Creating a Login Form in HTML

Below is the Login Form in HTML. Paste it in a file named login.php

       
 
 
Login
 
Please fill in your email and password.
 
 
Email Address 
 
Password 
Don't have an account? Register here.
  
 
 
  

The output of the above code will look like this

Step 2: Creating a Login System in PHP

After creating the login form in HTML, we will write a code to validate login credentials. On form submit we will check that the email and password are filled. If they filled then we will execute a SELECT query to find the record in a database on the basis of email and password. If any record found, then we will store the «userID» in session and the user is redirected to the welcome.php file, otherwise, the user is alerted with an error message.

Let’s replace the following code in the login.php file.

Please enter email.
'; > // validate if password is empty if (empty($password)) < $error .= '
Please enter your password.
'; > if (empty($error)) < if($query = $db->prepare("SELECT * FROM users WHERE email = ?")) < $query->bind_param('s', $email); $query->execute(); $row = $query->fetch(); if ($row) < if (password_verify($password, $row['password'])) < $_SESSION["userid"] = $row['id']; $_SESSION["user"] = $row; // Redirect the user to welcome page header("location: welcome.php"); exit; >else < $error .= '
The password is not valid.
'; > > else < $error .= '
No User exist with that email address.
'; > > $query->close(); > // Close connection mysqli_close($db); > ?>       
 
 
Login
 
Please fill in your email and password.
  
 
Email Address 
 
Password 
Don't have an account? Register here.
  
 
 
   

3) Creating a Welcome Page

Below is the code for the welcome.php file. Users will be redirected to this page after a successful login process. We have added some code at the top of the page to check if the user is not logged in, then redirect the user to the login page.

Let’s create a welcome.php file and paste the following code in it.

 ?>    Welcome   
 
 
Hello, . Welcome to demo site.
 
 
Log Out 
 
 
  

4) The Logout script

Finally, Let’s create a logout.php file with the following code in it.

Once the user clicks on the Log Out link, the above script, will be called to destroy the session and redirect user to the login.php file.

Conclusion

In this tutorial, I explained how you can create a Login System using HTML, PHP and MySQL. Once you understand how simple it is to create a login system you can add other features like reset password, forgot password, verify email address, edit user’s profile, etc.

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Register

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How To Create a Register Form

Step 1) Add HTML:

Use a element to process the input. You can learn more about this in our PHP tutorial. Then add inputs (with a matching label) for each field:

Example

Register

Please fill in this form to create an account.

Step 2) Add CSS:

Example

/* Add padding to containers */
.container padding: 16px;
>

/* Full-width input fields */
input[type=text], input[type=password] width: 100%;
padding: 15px;
margin: 5px 0 22px 0;
display: inline-block;
border: none;
background: #f1f1f1;
>

input[type=text]:focus, input[type=password]:focus background-color: #ddd;
outline: none;
>

/* Overwrite default styles of hr */
hr border: 1px solid #f1f1f1;
margin-bottom: 25px;
>

/* Set a style for the submit/register button */
.registerbtn background-color: #04AA6D;
color: white;
padding: 16px 20px;
margin: 8px 0;
border: none;
cursor: pointer;
width: 100%;
opacity: 0.9;
>

/* Add a blue text color to links */
a color: dodgerblue;
>

/* Set a grey background color and center the text of the «sign in» section */
.signin background-color: #f1f1f1;
text-align: center;
>

Tip: Go to our HTML Form Tutorial to learn more about HTML Forms.

Tip: Go to our CSS Form Tutorial to learn more about how to style form elements.

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Login and Registration Form in HTML CSS & JavaScript

Hey friends, today in this blog, you’ll learn how to create an Animated Login and Registration Form in HTML CSS & JavaScript. Earlier I shared many blogs on How to Create a Login Form using HTML & CSS but, I haven’t shared a particular blog related to Login and Registration Forms in HTML. So, it’s time to create this one.

In this Form (Login and Registration Form in HTML), on the webpage, there is a login form and two toggle buttons at the top of the form labeled Login and Signup as you can see in the preview image above.

When you click on the signup button, the login form smoothly slides from the right to the left side and shows you the signup form.

And again after clicking the login button, the signup form slide from the left to the right side and shows you the login form. In this form, the login and signup forms both are on the same page and it is done with a little bit of JavaScript codes.

If you’re feeling difficult to understand what I am saying, you can watch a full video tutorial of this form (Login and Registration Form in HTML).

Video Tutorial of Login and Registration Form in HTML

In the video, you have seen an animated Login and Registration Form that is created using HTML CSS & JavaScript. I hope you’ve understood the basic codes behind creating this form.

I used just a few lines of JavaScript codes to complete this form, so you can easily create this type of login and registration form in HTML even if you’re a beginner.

JavaScript is used only to slide the form on button click and the toggle tab that slides from login to signup text and signup to login text is wholly based on pure HTML & CSS with the help of HTML tag.

If you liked this login form and want to get source codes or files, you can get them from the bottom of this page.

You might like this:

Login and Registration Form in HTML [Source Codes]

To create this form (Login and Registration Form in HTML). First, you need to create two Files one HTML File and another one is CSS File. After completing these files paste the following codes into your file.

First, create an HTML file with the name index.html and paste the given codes into your HTML file. Remember, you’ve to create a file with a .html extension.

        
 
 
Login Form
 
Signup Form
 
 
 
  Login Signup 
 
 
 
 
 
Forgot password? 
 
 
Not a member? Signup now 
  
   

Second, create a CSS file with the name style.css and paste the given codes into your CSS file. Remember, you’ve to create a file with a .css extension.

@import url(‘https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap’); * < margin: 0; padding: 0; box-sizing: border-box; font-family: 'Poppins', sans-serif; >html,body < display: grid; height: 100%; width: 100%; place-items: center; background: -webkit-linear-gradient(left, #a445b2, #fa4299); >::selection < background: #fa4299; color: #fff; >.wrapper < overflow: hidden; max-width: 390px; background: #fff; padding: 30px; border-radius: 5px; box-shadow: 0px 15px 20px rgba(0,0,0,0.1); >.wrapper .title-text < display: flex; width: 200%; >.wrapper .title < width: 50%; font-size: 35px; font-weight: 600; text-align: center; transition: all 0.6s cubic-bezier(0.68,-0.55,0.265,1.55); >.wrapper .slide-controls < position: relative; display: flex; height: 50px; width: 100%; overflow: hidden; margin: 30px 0 10px 0; justify-content: space-between; border: 1px solid lightgrey; border-radius: 5px; >.slide-controls .slide < height: 100%; width: 100%; color: #fff; font-size: 18px; font-weight: 500; text-align: center; line-height: 48px; cursor: pointer; z-index: 1; transition: all 0.6s ease; >.slide-controls label.signup < color: #000; >.slide-controls .slider-tab < position: absolute; height: 100%; width: 50%; left: 0; z-index: 0; border-radius: 5px; background: -webkit-linear-gradient(left, #a445b2, #fa4299); transition: all 0.6s cubic-bezier(0.68,-0.55,0.265,1.55); >input[type=»radio»] < display: none; >#signup:checked ~ .slider-tab < left: 50%; >#signup:checked ~ label.signup < color: #fff; cursor: default; user-select: none; >#signup:checked ~ label.login < color: #000; >#login:checked ~ label.signup < color: #000; >#login:checked ~ label.login < cursor: default; user-select: none; >.wrapper .form-container < width: 100%; overflow: hidden; >.form-container .form-inner < display: flex; width: 200%; >.form-container .form-inner form < width: 50%; transition: all 0.6s cubic-bezier(0.68,-0.55,0.265,1.55); >.form-inner form .field < height: 50px; width: 100%; margin-top: 20px; >.form-inner form .field input < height: 100%; width: 100%; outline: none; padding-left: 15px; border-radius: 5px; border: 1px solid lightgrey; border-bottom-width: 2px; font-size: 17px; transition: all 0.3s ease; >.form-inner form .field input:focus < border-color: #fc83bb; /* box-shadow: inset 0 0 3px #fb6aae; */ >.form-inner form .field input::placeholder < color: #999; transition: all 0.3s ease; >form .field input:focus::placeholder < color: #b3b3b3; >.form-inner form .pass-link < margin-top: 5px; >.form-inner form .signup-link < text-align: center; margin-top: 30px; >.form-inner form .pass-link a, .form-inner form .signup-link a < color: #fa4299; text-decoration: none; >.form-inner form .pass-link a:hover, .form-inner form .signup-link a:hover < text-decoration: underline; >form .btn < height: 50px; width: 100%; border-radius: 5px; position: relative; overflow: hidden; >form .btn .btn-layer < height: 100%; width: 300%; position: absolute; left: -100%; background: -webkit-linear-gradient(right, #a445b2, #fa4299, #a445b2, #fa4299); border-radius: 5px; transition: all 0.4s ease;; >form .btn:hover .btn-layer < left: 0; >form .btn input[type=»submit»]

That’s all, now you’ve successfully created a Login and Registration Form in HTML CSS & JavaScript. If your code doesn’t work or you’ve faced any error/problem then please download the source code files from the given download button. It’s free and a .zip file will be downloaded then you’ve to extract it.

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