PHP

<?php

        function canLogin($p_username, $p_password){
            //todo: database implementeren
            if($p_username=="hello@moyadesign.be" && $p_password="123"){
                return true;
            } else {
                return false;
            }
        }

//wordt er ingelogd?
if (!empty($_POST)) {
    // opvragen wat binnen komt
    $username = $_POST ['email'];
    $password = $_POST ['password'];
    // controleren of login mag?

    //if ok: naar loggedin.php
if (canLogin($username, $password)){
header('Location: loggedin.php');
} else {     //else feedback tonen
    $error = "Oh boy, that didn't go well.";
}
    }

?><!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="css/style.css" />

	<meta charset="UTF-8">
	<title>Login</title>
</head>
<body>

	<div class="box">
<h1>Login</h1>
<form action="" method="post">

        <?php if( isset($error)): ?>
      <div class="feedback">
        Oh boy, that didn't go well.
      </div>
      <?php endif; ?>

  <div class="form-group">
    <label for="email">Email address</label>
    <input name="email" id="email" type="email" />
  </div>

  <div class="form-group">
    <label for="password">Password</label>
    <input name="password" id="password" type="password" />
  </div>

  <div class="form-group">
  <button type="submit">Login</button>
    </div>

</form>
</div>

<hr />
</div>
</body>
</html>