Basically I need to add an extra login field to the WordPress login. But the data in the field I have to add to the form resides on a separate database. So the complicated part is that I have ‘Username’ and ‘Password’ that is authenticated against the WordPress database and I need to add ‘Customer Number’ that resides on another database. I’m not sure if there is a way to authenticate one login using multiple databases.
The ‘Customer Number’ doesn’t need to match any of the other fields. It just needs to check whether or not it exists.
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