src/Connection/Replication/MasterSlaveReplication.php
public function getConnectionByCommand(CommandInterface $command)
    {
        if (!$this->current) {
            if ($this->strategy->isReadOperation($command) && $slave = $this->pickSlave()) {
                $this->current = $slave;
            } else {
                $this->current = $this->getMasterOrDie();
            }

            return $this->current;
        }

        if ($this->current === $master = $this->getMasterOrDie()) {
            return $master;
        }

        if (!$this->strategy->isReadOperation($command) || !$this->slaves) {
            $this->current = $master;
        }

        return $this->current;
    }
public function getConnectionByCommand(CommandInterface $command)
    {
        if (!$this->current) {
            if ($this->strategy->isReadOperation($command) && $slave = $this->pickSlave()) {
                $this->current = $slave;
            } else {
                $this->current = $this->getMasterOrDie();
            }

            return $this->current;
        }

        if ($this->current === $master = $this->getMasterOrDie()) {
            return $master;
        }

        if (!$this->strategy->isReadOperation($command) || !$this->slaves) {
            $this->current = $master;
        }

        return $this->current;
    }
{@inheritdoc}