registration.php

<?php
  session_start(); 
    $title = "Registration";
  require_once "./template/header.php";
  require_once "./functions/database_functions.php";
  $conn = db_connect();
?>
<br></br>
<br></br>
<?php
    
    
    if (isset($_REQUEST['username'])) {
        
        $username = stripslashes($_REQUEST['username']);
        
        $username = mysqli_real_escape_string($conn, $username);
        $email    = stripslashes($_REQUEST['email']);
        $email    = mysqli_real_escape_string($conn, $email);
        $password = stripslashes($_REQUEST['password']);
        $password = mysqli_real_escape_string($conn, $password);
        $create_datetime = date("Y-m-d H:i:s");
        $query    = "INSERT into `users` (username, password, email, create_datetime)
                     VALUES ('$username', '" . md5($password) . "', '$email', '$create_datetime')";
        $result   = mysqli_query($conn, $query);
        if ($result) {
            echo "<div class='form'>
                  <h3>You are registered successfully.</h3><br/>
                  <p class='link'>Click here to <a href='login.php'>Login</a></p>
                  </div>";
        } else {
            echo "<div class='form'>
                  <h3>Required fields are missing.</h3><br/>
                  <p class='link'>Click here to <a href='registration.php'>registration</a> again.</p>
                  </div>";
        }
    } else {
?>

<div class="row" id="RegForm">
        <div class="col-md-3"></div>
		<div class="col-md-6 text-center">
		<form class="form-horizontal" action="" method="post">     
        <h1 class="login-title">Registration</h1>
        <input type="text" class="login-input" name="username" placeholder="Username" required /><br></br>
        <input type="text" class="login-input" name="email" placeholder="Email Adress"><br></br>
        <input type="password" class="login-input" name="password" placeholder="Password"><br></br>
        <input type="submit" name="submit" value="Register" class="login-button"><br></br>
        <p class="link"><a href="login.php">Click to Login</a></p>
    </form>
    </div>
    </div>
<?php
    }
?>
<?php
  if(isset($conn)) {mysqli_close($conn);}
  require_once "./template/footer.php";
?>