Untitled

<?PHP
        require_once('functions.php');
        $user=session_check();
?>
<html>
<head>
        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/uikit/2.26.3/css/uikit.min.css" />
        <script src="https://cdnjs.cloudflare.com/ajax/libs/uikit/2.26.3/js/uikit.min.js"> </script>
</head>
<body>
<?PHP
        show_menu($user);
if ($user==NULL or $user['id']==NULL)
{
echo '<form method="post" action="login.php" class="uk-form">
    <fieldset data-uk-margin>
        <legend>Log in</legend>
        <input name="username" type="text" placeholder="username">
        <input name="password" type="password" placeholder="password">
        <button class="uk-button">Go!</button>
        <label><input type="checkbox">Remember me!</label>
    </fieldset>
</form>';
}
else
        echo "Witaj ".$user['username']."!";
?>
</body>
</html>