connect_error) { die("Connection failed"); } $error = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { $email = $_POST['email']; $password = $_POST['password']; $sql = "SELECT * FROM users WHERE email='$email' AND password='$password'"; $result = $conn->query($sql); if ($result->num_rows > 0) { $_SESSION['user'] = $email; } else { $error = "Invalid Email or Password!"; } } if (isset($_GET['logout'])) { session_destroy(); header("Location: index.php"); } ?>