mysql_select_db 用法_PHP mysql_select_db 用法手册 | 示例代码

作者：小舞很执着 | 2024-07-03 08:14:34

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sets the current active database on the server that's associated with the sp

Note that the manual is slightly misleading it states :-

"Sets the current active database on the server that's associated with the specified link identifier. Every subsequent call to mysql_query() will be made on the active database."

The 2nd statement is not true or at best unclear.

mysql_query() manual entry actually correctly states it will use the last link opened by mysql_connect() by default.

Thus if you have 2 connections you will need to specify the connection when calling mysql_query or issue the connect again to ensure the 1st database becomes the default, simply using mysql_select_db will not make the 1st database the default for subsequent calls to mysql_query.

Its probably only apparent when the two databases are on different servers.

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mysql_select_db 用法_PHP mysql_select_db 用法 手册 | 示例代码

mysql_select_db 用法_PHP mysql_select_db 用法手册 | 示例代码