Just upgraded one of our forums to 1.3. Yeah, yeah...I know.
In any event. I have an external PHP script, and I use various items from the XenForo database to authenticate users on that page. One of them I use is the secondary_group_ids entries, to grant certain permissions (i.e. their forum permissions match what they can do on the external site). They used to be a nice comma-separated list, but now are just bizarre.
For example. I have a member whose secondary user groups are 3, 10, and 12. In the old version, the database would show 3,10,12. It was really easy to pull that from the database via a PHP file using CONCAT. Now it shows 332c31302c3132. No clue what any of that means, or what I'm supposed to do with it.
No idea when this changed, but it's the same way on all our 1.3 forums. Any help would be greatly appreciated!