Manual:$wgDefaultBlockExpiry

Category:MediaWiki configuration settings#DefaultBlockExpiryCategory:MediaWiki configuration settings introduced in version 1.2.0#DefaultBlockExpiryCategory:MediaWiki configuration settings removed in version 1.5.0#DefaultBlockExpiryCategory:MediaWiki deprecated or obsolete features#DefaultBlockExpiryCategory:Permission variables#DefaultBlockExpiry
User rights, access control and monitoring: $wgDefaultBlockExpiry
Default expiry time for IP blocks.
Introduced in version:1.2.0
Removed in version:1.5.0
Allowed values:String in strtotime() format, or "infinite" for an infinite block
Default value:'24 hours'

Details

Default expiry time in strtotime() format, or "infinite" for an infinite block.

It was removed in 1.15, shortly replaced by $wgBlockExpiryOptions in r7517 which was later removed in r9748.

After a request in bugzilla:32178, this feature was reintroduced in the form of a system message in version 1.20.
Category:MediaWiki configuration settings Category:MediaWiki configuration settings introduced in version 1.2.0 Category:MediaWiki configuration settings removed in version 1.5.0 Category:MediaWiki deprecated or obsolete features Category:Permission variables