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filter is not described

subdirectory_reserved_names filter-hook . WP 3.0.0

Filters reserved site names on a sub-directory Multisite installation.

Usage

add_filter( 'subdirectory_reserved_names', 'filter_function_name_5132' );
function filter_function_name_5132( $subdirectory_reserved_names ){
	// filter...

	return $subdirectory_reserved_names;
}
$subdirectory_reserved_names(array)
Array of reserved names.

Notes

  • Since 4.4.0 'wp-admin', 'wp-content', 'wp-includes', 'wp-json', and 'embed' were added
    to the reserved names list.

Where the hook is called

get_subdirectory_reserved_names()
wp-includes/ms-functions.php 2573
return apply_filters( 'subdirectory_reserved_names', $names );

Where the hook is used (in WP core)

Does not used.