Get a list of the current user's active MemberPress Subscriptions

mepr-active-memberships.php

<?php
if(class_exists('MeprUtils')) {
  $user = MeprUtils::get_currentuserinfo();
  
  if($user !== false && isset($user->ID)) {
    //Returns an array of Membership ID's that the current user is active on
    //Can also use 'products' or 'transactions' as the argument type
    $active_prodcuts = $user->active_product_subscriptions('ids');
    
    if(!empty($active_prodcuts)) {
      foreach($active_prodcuts as $membership_id) {
        // Do something
      }
    }
  }
}

@axew3

$active_membership_ids = $user->active_product_subscriptions('ids');
$titles = array();
if(!empty($active_membership_ids)) {
  foreach($active_membership_ids as $id) {
    $membership = new MeprProduct($id);
    $titles[] = $membership->post_title;
  }
}

@cartpauj Thank you!
I was thinking to check for a different way, since mine was make me feel not secure: not sure if the result is ever correct the way of my snippet (if some order change for example). Anyway your seem to me that do not return the same like into mine, that should be something like:
Array ( [11000] => Annual Membership - Auto Renewing [13000] => Monthly Membership – Manually Renewing )
product ID => product Name