- Hmmm, I'm not a php guru, but there are some functions that require you to use $this->registry->posts or $this->registry->options instead of just $posts or $vbulletin->options. The best thing to figure out which to use is to locate the hook you are wanting to use in the php code and see the syntax used right there.
- information regarding the input cleaner is still valid for vB4
- I don't know anything about the send PM article, sorry
- $db should all be the same. If you are writing code for the CMS however, the syntax will be a little different with a "vB::" in front of it.
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