' . htmlspecialchars($_SESSION['success_message']) . ''; unset($_SESSION['success_message']); } if (isset($_SESSION['error_message'])) { echo '
' . htmlspecialchars($_SESSION['error_message']) . '
'; unset($_SESSION['error_message']); } if (isset($_SESSION['warning_message'])) { echo '
' . htmlspecialchars($_SESSION['warning_message']) . '
'; unset($_SESSION['warning_message']); } ?>