setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); } catch(PDOException $e) { $conn = null; return; } } /** * If user logged out, destroy the session data and delete cookie. */ if (isset($_POST["logout"])) { if (ini_get("session.use_cookies")) { $params = session_get_cookie_params(); setcookie(session_name(), '', time() - 42000, $params["path"], $params["domain"], $params["secure"], $params["httponly"] ); } // Redirect to this page with GET header(sprintf("Location: %s?%s", sanitize_input($_SERVER["PHP_SELF"]), sanitize_input($_POST["get_params"]))); } /** * Construct the available account actions for the header depending on whether * a user is logged in or not and return it as string. */ function construct_account_section(){ if(isset($_SESSION["current_user"])) { return sprintf("Logged in as %s
Delete account", $_SESSION["current_user"]->user_name, sanitize_input($_SERVER["PHP_SELF"]), sanitize_input($_SERVER["QUERY_STRING"])); } else { return sprintf("Login
Register"); } } /** * Start the html document, set headers, begin body and display the default * navbar. * nad
tags will be left open, to close them * in the default way include footer.php * This should be the first function to write any text outside of debugging * purposes. */ function display_header($pageTitle) { printf(" %s

Zdenek Borovec

%s
", $pageTitle, construct_account_section()); } ?>