I wrote this script when I moved my wpmu site freeblogit.com from a single database to a multi-database, using md5 as the routing key. I was amazed that this script didn’t exist when I converted to multi-db, as it would have taken forever to move the blogs one by one. The script itself is pretty simple, and the code is documented. My original script was modified slightly by the folks at wpmu dev premium to match their naming convention. Although I wrote this with the premium multi-db plugin in mind, it should work for any wpmu md5 database move. It has built in support for 16, 256, and 4096 database conversions.
Also included in the zip is a little utility for displaying the md5 hash id in numerical order. This can be handy when trying to figure out which db a specific blog is in.
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Hope this helps someone!
