final public function time() {
		if ($this->dbtype == 'pgsql')
			return $this->query(
				"SELECT EXTRACT('epoch' from CURRENT_TIMESTAMP) AS now"
			)['now'];
		if ($this->dbtype == 'mysql')
			return $this->query(
				"SELECT UNIX_TIMESTAMP() AS now")['now'];
		return $this->query(
			"SELECT strftime('%s', CURRENT_TIMESTAMP) AS now"
		)['now'];
	}