|wp-includes/pluggable.php: wp_redirect()|| |
Redirects to another page.
|wp-includes/query.php: is_404()|| |
Determines whether the query has resulted in a 404 (returns no results).
|wp-includes/functions.php: is_main_site()|| |
Determine whether a site is the main site of the current network.
|wp-includes/link-template.php: network_home_url()|| |
Retrieves the home URL for the current network.
|wp-includes/plugin.php: apply_filters()|| |
Call the functions added to a filter hook.
|wp-includes/ms-functions.php: blog_redirect_404|| |
Filters the redirect URL for 404s on the main site.