Fires before the Site Activation page is loaded. Parameters . ( 3.0.0 ) . . Hook name: activate_header Hook type: action Plugin ref: WordPress Sourcefile: File ref: wp-includes/default-filters.php Description: Filters formerly mixed into wp-includes Parameters: Deprecated?: No API Letters: A,H Invokers 1 to 1 of 1 wp-activate.php Implementers
WordPress a2z