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

mepr-active-memberships.php

<?php

function memberpress__get_all_memberships( $user_id = false ){
    
    if( class_exists('MeprUser') ){
        
        if( ! $user_id ){
            $user_id = get_current_user_id();
        }
        
        $user            = new MeprUser( $user_id );
        $get_memberships = $user->active_product_subscriptions();
        
        if( !empty( $get_memberships ) ){
            $user_memberships = array_values( array_unique( $get_memberships ) );
        } else {
            $user_memberships = array();
        }
        
        return $user_memberships;
        
    } else {
        return false;
    }
}