<?php
session_start();
if (!isset($_SESSION['isLogged'])) {
    $_SESSION['isLogged'] = NULL;
}
$pageTitle = 'Вход';
if (isset($_POST['login'])) {
    $username = trim($_POST['username']);
    $password = trim($_POST['password']);
    if ($username == 'user' && $password == 'qwerty') {
        $_SESSION['isLogged'] = true;
        unset($_POST);
        header('Location:index.php');
    } else {
        echo 'Грешно Име/Парола';
    }
}
require 'header.php';
if (isset($_SESSION['isLogged'])) {
    echo 'Логнат <br/>';
    echo '<a href="logout.php";>Излез</a>';
}
?>
<?php if (!isset($_SESSION['isLogged'])) : ?>
    <form  method="POST" action="index.php" >
        Име:
        <input type="text" name="username" />
        <br/>
        Парола:
        <input type="password" name="password" />
        <br/>
        <input type="submit" name="login" value="Вход" />
    </form>
<?php endif; ?>
<?php require 'footer.php'; ?>