您可以使用Config :: set方法来即时更改基础配置-到另一个数据库连接，假设这就是您的意思。

You can use the Config::set method to change your underlying config on the fly - to another database connection, assuming that is what you mean.

Config::set("database.connections.mysql", [
    "host" => "...",
    "database" => "...",
    "username" => "...",
    "password" => "...
]);