在PDO中的多个数据库之间切换 [英] Switch between multiple database in PDO

问题描述

我是PDO的新手.我想知道在PDO中是否有类似于mysql_select_db的东西，这样我可以在运行时在不同数据库之间切换，而无需创建新对象.

I'm new to PDO. I would like to know if there is anything similar to mysql_select_db in PDO, so that i can switch between different databases during runtime without the need for creating a new object.

推荐答案

没有，如果要在运行时同时使用两个PDO对象，则需要为单独的连接创建两个PDO对象.

There is not, you will need to create two PDO objects for the separate connections if you would like to use both at runtime.

下面@laz的有趣观点(我想这是我的回答遭到否定的原因).我当时在考虑数据库位于单独的服务器tbh上的假设，在这种情况下，我的回答是正确的.

Interesting point by @laz below (which I'm guessing is the cause of negative votes on my answer). I was thinking under the assumption that the databases were on separate servers tbh, in which case my answer stands.

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