Alter membergroupids through MySQL?
 

My forum has a custom usergroup for 'member' which is a paid membership not managed through vBulletin. I'd like to update this through MySQL, based on information in a separate table. In my case let's say it is group 11.

This means that if a user's membergroupids value is:
- blank I need to add '11'
- 10 I need to add ', 11'
- 12 I need to insert '11, '
- 10,12 I need to insert '11, '
- etc.

Plus if someone's membership expires I'll want to remove the 11 along with any extra commas.

Ideally there is a routine I can use somewhere in VB that will do this for me, but either way - is this something that anyone has dealt with before? Any suggestions? Sure I can write a bunch of if/then statements but I'm probably overlooking a much better solution.

--------------- Added [DATE]1285008651[/DATE] at [TIME]1285008651[/TIME] ---------------

Doing a bit more looking, it seems the process would be:

Get membergroupids
Explode it
If arraysearch (11, membergroupids)
- remove the 11 element
- Implode it
- save it

Is there a function for removing a specific array element? I can find them for adding and removing end elements but nothing for a specific one that might be in the middle.

OK, looks like this hasn't really been tackled before. I'll get to it in the next few weeks, but it looks like array_splice() is going to be my friend for removing group IDs and array_push() will let me add them to the end.

get
explode()
array_search()
array_splice() or array_push() or nothing
if changed:
- implode()
- update