Nicer OOP implementation of storing and accessing structured data in Drupal 7 user object

oop-drupal-7-user.php

<?php
// Set the employee salary of a user.
$account = user_load(1);
$employee_details = new EmployeeDetails($account);
$employee_details->setEmployeeSalary(65000);
user_save($account);
 
// Retrieve the employee salary for a given user.
$account = user_load(1);
$employee_details = new EmployeeDetails($account);
$salary = $employee->getEmployeeSalary();