Think/Model/MongoModel.php
public function command($command, $options = [])
    {
        $options = $this->_parseOptions($options);

        return $this->db->command($command, $options);
    }
public function command($command, $options = [])
    {
        $options = $this->_parseOptions($options);

        return $this->db->command($command, $options);
    }
执行Mongo指令

@param array $command 指令
@return mixed