Manual:Wiki ID

The wiki ID (or database ID) is the most common way of identifying a wiki within a wiki farm in MediaWiki. When every wiki is in a separate database, it is simply the database name; when multiple wikis share a database and are differentiated with table prefixes, it is in the form ‎<db name>-‎<table prefix>. It can be retrieved by calling WikiMap::getCurrentWikiId() (in older versions of MediaWiki, wfWikiID()). It is used for getting a database connection for a given wiki (see LoadBalancer::getConnection()) and in $wgConf , among other things.

See also

• $wgDBname
• $wgDBprefix
• Wikimedia\Rdbms\DatabaseDomain
• wfWikiID()