nextcloud / server

		$groupDN = $this->access->groupname2dn($gid);

		// just in case

		if(!$groupDN || !$userDN) {

			$this->access->connection->writeToCache($cacheKey, false);

			return false;

		}

		//check primary group first

		if($gid === $this->getUserPrimaryGroup($userDN)) {

		}

		//check primary group first

		if($gid === $this->getUserPrimaryGroup($userDN)) {

			$this->access->connection->writeToCache($cacheKey, true);

			return true;

		}

		//usually, LDAP attributes are said to be case insensitive. But there are exceptions of course.

		$members = $this->_groupMembers($groupDN);