Wikimedia Bugzilla is closed!

When updated to the latest PHP version (5.4) and the latest Semantic MediaWiki version, the following error was found:

Given namespace '0' is not an integer.
Backtrace:
#0 /var/www/wiki/extensions/SemanticMediaWikiBad/includes/storage/SMW_SQLStore2_Queries.php(415): SMWDIWikiPage->__construct('Log_Example', '0', '', '')
#1 /var/www/wiki/extensions/SemanticMediaWikiBad/includes/storage/SMW_SQLStore2_Queries.php(284): SMWSQLStore2QueryEngine->getInstanceQueryResult(Object(SMWQuery), 2)
#2 /var/www/wiki/extensions/SemanticMediaWikiBad/includes/storage/SMW_SQLStore2.php(997): SMWSQLStore2QueryEngine->getQueryResult(Object(SMWQuery))
#3 /var/www/wiki/extensions/SemanticMediaWikiBad/specials/AskSpecial/SMW_SpecialAsk.php(384): SMWSQLStore2->getQueryResult(Object(SMWQuery))
#4 /var/www/wiki/extensions/SemanticMediaWikiBad/specials/AskSpecial/SMW_SpecialAsk.php(54): SMWAskPage->makeHTMLResult()
#5 /var/www/wiki/includes/SpecialPageFactory.php(458): SMWAskPage->execute(NULL)
#6 /var/www/wiki/includes/Wiki.php(240): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#7 /var/www/wiki/includes/Wiki.php(640): MediaWiki->performRequest()
#8 /var/www/wiki/includes/Wiki.php(547): MediaWiki->main()
#9 /var/www/wiki/index.php(57): MediaWiki->run()
#10 {main}


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The reason is likely this:
http://www.php.net/manual/en/migration53.incompatible.php