MediaWiki:Apihelp-globalblock-param-expiry/en
If specified, will block or reblock the user. Determines how long the block will last for, e.g. "5 months" or "2 weeks". If set to "infinite" or "indefinite" the block will never expire.
If specified, will block or reblock the user. Determines how long the block will last for, e.g. "5 months" or "2 weeks". If set to "infinite" or "indefinite" the block will never expire.