connect_error) { die(json_encode([])); // Return empty JSON on failure } $stmt = $conn->prepare("SELECT user_id, first_name, last_name FROM users ORDER BY first_name ASC"); $stmt->execute(); $result = $stmt->get_result(); $users = []; while ($row = $result->fetch_assoc()) { $users[] = $row; } echo json_encode($users); $conn->close(); ?>