Craft\FormBuilder2_EntryService::getAllEntryIds PHP Method

    public function getAllEntryIds()
    {
        if (!isset($this->_allEntryIds)) {
            if ($this->_fetchedAllEntries) {
                $this->_allEntryIds = array_keys($this->_entriesById);
            } else {
                $this->_allEntryIds = craft()->db->createCommand()->select('id')->from('formbuilder2_entries')->queryColumn();
            }
        }
        return $this->_allEntryIds;
    }