Topic on Project:Support desk

Just noticed today lots of errors: http://www.speedsolving.com/wiki/index.php/Main_Page

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/patjk/public_html/speedsolving/wiki/includes/MagicWord.php on line 851

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/patjk/public_html/speedsolving/wiki/includes/MagicWord.php on line 846

Warning: Invalid argument supplied for foreach() in /home/patjk/public_html/speedsolving/wiki/includes/MagicWord.php on line 847

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/patjk/public_html/speedsolving/wiki/includes/MagicWord.php on line 851

Warning: preg_match(): Compilation failed: group name must start with a non-digit at offset 8 in /home/patjk/public_html/speedsolving/wiki/includes/MagicWord.php on line 872

Warning: preg_match(): Compilation failed: group name must start with a non-digit at offset 8 in /home/patjk/public_html/speedsolving/wiki/includes/MagicWord.php on line 872

Warning: preg_match(): Compilation failed: group name must start with a non-digit at offset 8 in /home/patjk/public_html/speedsolving/wiki/includes/MagicWord.php on line 872

Just started today. PHP version 5.4.30 MySQL version 5.6.16 Mediawiki: not sure, maybe 8 months ago (can't find it with these errors)

What do I need to do?

Thanks.

This hack has resolved the issue for now. I think the best option is probably to upgrade MediaWiki: https://gerrit.wikimedia.org/r/#/c/107259/1/includes/MagicWord.php

Happened to my site too. Why do these errors suddenly appear?

Because the server where your MediaWiki is running upgraded the PCRE package to a newer version, introducing this breaking change. Please, upgrade MediaWiki to solve the issue (latest releases of MediaWiki 1.19 and newer versions have fixed this issue)

I applied this hack and when I'm logged into my wiki page, I see the content without errors, but when I'm not logged in, there is no content, any easy fox on this? Sounds like a permissions thing...

I simply edited nothing and saved my main pages and now they show up for non-logged in users, however my actual main wiki db is still not showing up and it errors out when I try to save an edit of the main page.

Database error A database query syntax error has occurred. This may indicate a bug in the software. The last attempted database query was:

   (SQL query hidden)

from within function "Revision::insertOn". MySQL returned error "1048: Column 'old_text' cannot be null (localhost)".