prepare("SELECT users.*, roles.name as role_name FROM users JOIN roles ON users.role_id = roles.id WHERE users.username = ?"); $stmt->execute([$username]); $user = $stmt->fetch(); if ($user && password_verify($password, $user['password'])) { $_SESSION['user_id'] = $user['id']; $_SESSION['username'] = $user['username']; $_SESSION['role'] = $user['role_name']; header("Location: request_dashboard.php"); exit; } else { $error = 'Invalid username or password.'; } } catch (PDOException $e) { $error = "DB Error: " . $e->getMessage(); } } } ?>