prepare("SELECT * FROM `users` WHERE `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'] = $user['role']; // Redirect based on role if ($user['role'] === 'doctor') { header("Location: doctor_dashboard.php"); } else { header("Location: reception.php"); } exit; } else { $error = 'Invalid username or password.'; } } catch (PDOException $e) { $error = 'Database error. Please try again later.'; } } } ?> Login - Clinic Management