<?php
$response = array('valid' => false, 'message' => 'This "user" does not exist.');
if (isset($_POST['user'])) {
$userFactory = new UserFactory(DataStorage::instance());
$user = $userFactory->loadUser($_POST['user']);
if ($user) {
// User name is registered on another account
$response = array('valid' => false, 'message' => 'This user name is already registered.');
} else {
// User name is available
$response = array('valid' => true);
}
}
echo json_encode($response);
