code: function getSubscribersCount($fromDate = null, $toDate = null, $mailingIds = array(), $contactIds = array(), $contactEmails = array(), $contactExternalIds = array(), $excludeAnonymousContacts = false)
      {
          $params = $this->createCountQueryParameters($fromDate, $toDate, $contactIds, $contactEmails, $contactExternalIds, $mailingIds, null);
  
          if (isset ($excludeAnonymousContacts))
              $params ['exclude_anonymous_contacts'] = ($excludeAnonymousContacts == true) ? "true" : "false";
  
          return $this->get('reports/subscribers/count', $params);
      }
docs: Count subscribers.
  
  @param long $fromDate
  If provided, only the unsubscriptions after the given date will be returned. The value of from_date must be a numeric value representing a point in time milliseconds afterJanuary 1, 1970 00:00:00
  @param long $toDate
  If provided, only the unsubscriptions before the given date will be returned. The value of to_date must be a numeric value representing a point in time milliseconds afterJanuary 1, 1970 00:00:00
  @param array $mailingIds
  Multivalued parameter to filter the unsubscriptions by mailings. Each value must correspond to a mailing id.
  @param array $contactIds
  Multivalued parameter to filter the unsubscriptions by contacts. Each value must correspond to a contact id.
  @param array $contactEmails
  Multivalued parameter to filter the unsubscriptions by email addresses.
  @param array $contactExternalIds
  Multivalued parameter to filter the unsubscriptions by external ids. Each value must correspond to a contacts external id.
  @param bool $excludeAnonymousContacts
  If this is set to true (default), only subscribers that have not yet been anonymized (due to deletion) are returned.
  @return com_maileon_api_Page