So, this blog (for its sins) is running on WordPress 2.0.5. That’s a bit out-of-date. The main reason is because it has all sorts of jiggery-pokery to make it work the way I want – a tagging solution based on Jerome’s Keywords that was modified when I moved to 2.0; all sorts of template hacking to make the beautiful breadcrumb trail at the top you see work.

I’ve resisted upgrading due to the hell that was hacking plugins and templates into future versions of WordPress. Until now, that is. WordPress 2.3 (finally) introduces a proper tagging solution – entirely separate to the “categories” system. Well, not quite, as we’ll see – but it finally means that the architecture of is now entirely possible within WordPress itself.

Of course, now you’ve got to convert your custom tagging solution to the new schema. I’ve written a small script to do this for myself – only took about an hour, and that’s mainly because I was exploring the schema, and my PHP is a little rusty. Of course, now I know a reasonable amount about how tagging is implemented in WordPress 2.3, and felt I should write this up properly, so that anybody else converting custom tagging solutions might save themselves some time.

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