In this tutorial we will create a
Simple Login with md5 using PHP. This code can protect the user login information by encrypting the password value. The code use a special php built-in function
md5() a very strong encrypting tool that protect the user password by just passing the string in order to ultimately encrypt into a powerful password.
We will be using
PHP as a scripting language and interpreter that is used primarily on any webserver including xamp, wamp, etc. It is being use to any famous websites and it has a modern technology that can easily be use by the next generation.
Getting Started:
First you have to download & install XAMPP or any local server that run PHP scripts. Here's the link for XAMPP server
https://www.apachefriends.org/index.html.
And, this is the link for the bootstrap that i used for the layout design
https://getbootstrap.com/.
Creating Database
Open your database web server then create a database name in it
db_md5, after that click Import then locate the database file inside the folder of the application then click ok.

Creating the database connection
Open your any kind of text editor(notepad++, etc..). Then just copy/paste the code below then name it
conn.php.
<?php
if(!$conn){
die("Error: Failed to connect to database!"); }
?>
Creating The Interface
This is where we will create a simple form for our application. To create the forms simply copy and write it into your text editor, then save it as shown below.
index.php
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid">
<a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
</div>
</nav>
<div class="col-md-3"></div>
<div class="col-md-6 well">
<h3 class="text-primary">PHP - Simple Login with md5</h3>
<hr style="border-top:1px dotted #ccc;"/>
<div class="col-md-3">
<h5>DEFAULT USER</h4>
<h6>Username: admin</h6>
<h6>Password: admin</h6>
</div>
<div class="col-md-6">
<form method="POST" >
<div class="form-group">
<label>Username</label>
<input type="text" name="username" maxlength="50" class="form-control" required="required"/>
</div>
<div class="form-group">
<label>Password</label>
<input type="password" name="password" maxlength="12" class="form-control" required="required"/>
</div>
<?php include 'login.php'?>
<center><button class="btn btn-primary" name="login"><span class="glyphicon glyphicon-log-in"></span> Login</button></center>
</form>
</div>
</div>
</body>
</html>
home.php
<!DOCTYPE html>
<?php
require_once 'conn.php';
if(!ISSET($_SESSION['user_id'])){ header('location: index.php'); }
?>
<html lang="en">
<head>
<meta charset="UTF-8" name="viewport" content="width=device-width, initial-scale=1"/>
<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
</head>
<body>
<nav class="navbar navbar-default">
<div class="container-fluid">
<a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
</div>
</nav>
<div class="col-md-3"></div>
<div class="col-md-6 well">
<h3 class="text-primary">PHP - Simple Login with md5</h3>
<hr style="border-top:1px dotted #ccc;"/>
<?php
?>
<div class="col-md-3"></div>
<div class="col-md-6">
<h1>WELCOME</h1>
<h3 class="text-primary"><?php echo $fetch['name']?></h3>
<a href="logout.php" class="btn btn-primary"><span class="glyphicon glyphicon-log-out"></span> Logout</a>
</div>
</div>
</body>
</html>
Creating the Main Function
This code contains the minor function of the application. This code will allow the user to login with a md5 encrypted protection. To do this just kindly write these block of codes inside the text editor, then save it as shown below.
login.php
<?php
require_once 'conn.php';
if(ISSET($_POST['login'])){ $username = $_POST['username'];
$password = md5($_POST['password']);
$query = mysqli_query($conn, "SELECT * FROM `user` WHERE `username` = '$username' && `password` = '$password'") or
die(mysqli_error());
if($rows > 0){
$_SESSION['user_id'] = $fetch['user_id'];
}else{
echo "<center><label class='text-danger'>Invalid username or password!</label></center>";
}
}
?>
logout.php
<?php
unset($_SESSION['user_id']); header("location: index.php"); ?>
There you have it we successfully created a
Simple Login with md5 using PHP. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!