library/Rediska/Command/GetLastSaveTime.php
public function create() 
    {
        $command = array('LASTSAVE');
        $commands = array();
        foreach($this->_rediska->getConnections() as $connection) {
            $this->_connections[] = $connection->getAlias();
            $commands[] = new Rediska_Connection_Exec($connection, $command);
        }

        return $commands;
    }
public function create() 
    {
        $command = array('LASTSAVE');
        $commands = array();
        foreach($this->_rediska->getConnections() as $connection) {
            $this->_connections[] = $connection->getAlias();
            $commands[] = new Rediska_Connection_Exec($connection, $command);
        }

        return $commands;
    }
Create command

@return Rediska_Connection_Exec