Manual:$wgServerName/zh

''This variable was formerly available from 1.3.8 and then removed in 1.17.0. It was re-introduced in 1.24.0.''

详情
The name of the server without the protocol or trailing slash. (eg, "en.wikipedia.org"). It is automatically calculated based on. It should not be customized, and will generate a warning if set.

用于：
 * （ 属性）
 * Default value of server for and  emails.