https://bugzilla.wikimedia.org/show_bug.cgi?id=31103

--- Comment #6 from Brion Vibber <br...@wikimedia.org> 2011-09-22 19:23:20 UTC 
---
If you'd be interested in writing up your notes on a page on mediawiki.org,
please feel free -- it's a wiki and should allow you to get started right away.

This will also get the pages indexed for search on mediawiki.org (local search)
and via google etc searches on a relevant domain.


But do be aware that the MediaWiki dev community doesn't traditionally put a
lot of effort into maintenance of old releases beyond a couple versions of
security patch releases.

You'll probably find a combination of:
* old bugs that are fixed in newer versions of MediaWiki
* incompatibilities between old MediaWiki code and newer versions of other
packages like PHP and MySQL

For instance reference-related (&$foo) issues are common on newer versions of
PHP, because PHP keeps changing the rules on what's an acceptable use of
references. Due to historic usages from the PHP 4 era, a lot of extension hooks
are common places to see this because references got used in places where,
under PHP 5, they don't need to be (and now sometimes don't work).

That looks like the sort of thing you're running into up above.


Workarounds are basically:

1) Don't run the old versions if you can help it!

2) If you must run an old version of MediaWiki, you can either track down all
those bug fixes (and still be open to whatever other bugs and security problems
there are in the system)... or 

3) you can downgrade the other bits of your system to match it in which case
it'll more likely run... but you may be vulnerable to bugs and security
problems in those other packages as well.

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