The answer in your case is not to combine the DBs necessarily, but
consolidate the connections used. Like I said, you can use 2 MySQL DBs
on the same connection in PHP. There's no reason to sacrifice
separation of data.
Forgot about this one until now.. mysql also supports the extended syntax:
db.tablename.fieldname
so that'd save switching db's too.
Of course that depends on the same user having access to both db's, but that's the same as doing a select_db anyway.
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