$wgCaptchaTriggers['edit'] = true;
$wgCaptchaTriggers['create'] = true;
$wgCaptchaTriggers['addurl'] = true;
$wgCaptchaTriggers['createaccount'] = true;
$wgCaptchaTriggers['badlogin'] = false;
维基添加了confirmedit这个插件，createaccount这个项目是创建账户的选项，ture意思是创建账户时出现验证码？待确认。因为edit和create的时候同样true，但不出现验证码。
Manual:$wgSoftBlockRanges
IP ranges that should be considered soft-blocked (anon-only, account creation allowed)
ntroduced in version: 1.29.0 (Gerrit change 324214; git #337c0fb3)
Removed in version: still in use
Allowed values: array of IP ranges
Default value: array()
Other settings: Alphabetical | By function