Last modified: 2009-03-28 21:01:57 UTC
namespaceDupes.php thinks all wikis have a interwiki table. But that is not always the case for older wikis even though they have run update.php faithfully even thru 1.15: $ php namespaceDupes.php Warning: Invalid argument supplied for foreach() in /home/jidanni/phase3/maintenance/namespaceDupes.php on line 59
Yes, via the update.php, all wikis will have the table. However, it never occured to the script that the table might be empty, as the contents of that table are the choice of the administrator.
(E.g., following the advice of Bug #12200, the sysop might have just done TRUNCATE TABLE wiki_interwiki;)
Fixed in r48972