diff --git a/getmemberships.php b/getmemberships.php
new file mode 100755
index 0000000..3494e3c
--- /dev/null
+++ b/getmemberships.php
@@ -0,0 +1,47 @@
+#!/usr/bin/php
+<?php
+
+require_once 'vendor/autoload.php';
+$client = new Redmine\Client('https://hq.megaphonetech.com', '965fddd60cfb5690d15542944998058224d7289f');
+$client->setCheckSslCertificate(true);
+
+$limit = 100;
+$offset = 0;
+
+$projectList = getProjectList($limit, $offset, $client);
+print_r($getProjectList);
+die;
+$userList = getUserList($limit, $offset, $client);
+$membershipMapping = getUserMemberships($userList, $client);
+//print_r($membershipMapping);
+
+/*
+ *  Returns an array of all users.  Key is user ID, value is email address.
+ */
+function getUserList($limit, $offset, $client) {
+  //  We'll set a more realistic total user count after the first loop.
+  $totalUsers = 99999;
+  // Get a complete user list with email address.
+  while ($offset + $limit < $totalUsers) {
+    $listing = $client->user->all([
+      'limit' => $limit,
+      'offset' => $offset,
+    ]);
+    foreach ($listing['users'] as $user) {
+      $users[$user['id']] = $user['mail'];
+    }
+    $totalUsers = $listing['total_count'];
+    $offset += $limit;
+  };
+  return $users;
+}
+// Get the memberships of each user.  It's sad that we can't do this in bulk.
+function getUserMemberships($users, $client) {
+  foreach ($users as $id => $email) {
+    $userDetails = $client->user->show($id, ['include' => ['memberships']])['user'];
+    if (count($userDetails['memberships']) == 1) {
+      $membershipMapping[$email] = $userDetails['memberships'][0]['project']['id'];
+    }
+  }
+  return $membershipMapping;
+}