Untitled

<?php
require ("connect.php");

if(!empty($_POST))
{

  if(empty($_POST['username'])) {

    die ("Please enter a username");
  }

  if(empty($_POST['password'])) {

    die ("Please enter a password");
  }

  if (empty($_POST['email'])) {

    die ("Please enter an email");
  }

  $query = "SELECT 1 FROM users WHERE username = :username";

  $query_params = array(
      ':username' => $_POST['username']
  );

  try
  {
      $stmt = $db->prepare($query);
      $result = $stmt->execute($query_params);
  }
  catch(PDOException $ex)
  {
      die("Failed to run query: " . $ex->getMessage());
  }

  $row = $stmt->fetch();

  if($row)
  {
      die("This username is already in use");
  }

  $query = "
      INSERT INTO users (
          id,
          username,
          password,
          email
      ) VALUES (
          NULL,
          :username,
          :password,
          :email
            )
  ";

$options = [
    'cost' => 12,
    'salt' => mcrypt_create_iv(22, MCRYPT_DEV_URANDOM),
];

$password = password_hash($_POST['password'], PASSWORD_BCRYPT, $options);


$query_params = array(
    ':username' => $_POST['username'],
    ':password' => $password
    );

try
{
    // Execute the query to create the user
    $stmt = $db->prepare($query);
    $result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
    // Note: On a production website, you should not output $ex->getMessage().
    // It may provide an attacker with helpful information about your code.
    die("Failed to run query: " . $ex->getMessage());
}

// This redirects the user back to the login page after they register
header("Location: login.php");

// Calling die or exit after performing a redirect using the header function
// is critical.  The rest of your PHP script will continue to execute and
// will be sent to the user if you do not die or exit.
die("Redirecting to login.php");
}

?>

<!DOCTYPE html>
<html>
<head>
    <title>Εστιατόριο</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <link rel="stylesheet" href="style.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

  <div class="jumbotron text-center">
    <h1>Εστιατόριο</h1>
    <!--<img HEIGHT="140" WIDTH="140" src="img/black.png" alt="fork"> -->
    </br></br>
  </div>

<div class="register">
<h1>Register</h1>
<form action="register.php" method="post">
    Username:<br />
    <input type="text" name="username" value="" />
    <br /><br />
    E-Mail:<br />
    <input type="text" name="email" value="" />
    <br /><br />
    Password:<br />
    <input type="password" name="password" value="" />
    <br /><br />
    <input type="submit" value="Register" />
</form>
</div>
<footer>

<div class="container-fluid text-center bg-gray2 copyr" >

   &copy; Restaurant <?php echo date("Y") ?>

</footer>