Horde_Group_Base::exists PHP Метод

    public function exists($gid)
    {
        // Check list cache.
        if (($list = $this->_getListCache()) !== null && isset($list[$gid])) {
            return true;
        }
        // Check "exists" cache.
        if (is_bool($exists = $this->_checkExistsCache($gid))) {
            return $exists;
        }
        // Existance check.
        $exists = $this->_exists($gid);
        // Update "exists" cache.
        try {
            $this->_cache->set($this->_sig('exists_' . $gid), (int) $exists);
        } catch (Horde_Cache_Exception $e) {
        }
        return $exists;
    }