On 12 Jul 2012, at 12:29, Nick Edwards wrote:
> We have a program that manages users, throughout all database calls
> created as:
> $connect = mysql_connect($db_host--other variables);
> mysql_query("Delete from clients where id=$User");
> All this works good, but, we need, in the delete function to delete
> from another database
> mysql_query("DELETE from userprefs where clientr='$User'");
> this fails, unless we use a mysql_close prior to it, and then
> reconnect to original database after we run this delete, how can we
> get around this without closing and reopening?
> We have a perl script doing similar for manual runs, and it works
> well knowing that $connmy is not $connect, I'm sure there is a simple
> way to tell php but I'm darned if I can see it.
The mysql_query method takes a second parameter specifying the MySQL connection
to which to send the query. If you're dealing with multiple hosts you will want
to add that to every single mysql_* function call that supports it, otherwise
you could end up running queries on the wrong database.
You may also want to note that using the mysql_* functions is now discouraged
in favour of MySQLi or PDO: http://php.net/mysqlinfo.api.choosing