'User not logged in']); exit; } $userId = $_SESSION['user_id']; // Fetch user data from the database $sql = "SELECT firstname, lastname FROM users WHERE id = ?"; $stmt = $conn->prepare($sql); $stmt->bind_param("i", $userId); $stmt->execute(); $result = $stmt->get_result(); $user = $result->fetch_assoc(); if ($user) { echo json_encode($user); } else { echo json_encode(['error' => 'User not found']); } $stmt->close(); $conn->close(); } }