<?php
// Mocks, just placeholders
class DAO
{
}
require 'EntityInterface.php';
require 'Customer.php';
require 'CustomerMapper.php';
require 'IdentityMap.php';
$identityMap = new IdentityMap();
$customerMapper = new CustomerMapper(new DAO(), $identityMap);
// Fetch the customer with ID 42 two times. This results in $customer2 being the same
// object as customer1 and not just an object with the same values.
$customer1 = $customerMapper->findById(42);
$customer2 = $customerMapper->findById(42);
$customer3 = $customerMapper->findById(1337);
// Changing the e-mail of the first entity
$customer1->email = '*****@*****.**';
// Proof that also customer 2 was updated, but 3 isn't.
var_dump('$customer1->email: ' . $customer1->email, '$customer2->email: ' . $customer2->email, '$customer3->email: ' . $customer3->email);
