RedBeanPHP\AssociationManager::relatedCount PHP Method

    public function relatedCount($bean, $type, $sql = NULL, $bindings = array())
    {
        if (!$bean instanceof OODBBean) {
            throw new RedException('Expected array or OODBBean but got:' . gettype($bean));
        }
        if (!$bean->id) {
            return 0;
        }
        $beanType = $bean->getMeta('type');
        try {
            return $this->writer->queryRecordCountRelated($beanType, $type, $bean->id, $sql, $bindings);
        } catch (SQLException $exception) {
            $this->handleException($exception);
            return 0;
        }
    }