WordPress at a glance
filter is not described

wp_signature_hosts filter-hook . WP 5.2.0

Filters the list of hosts which should have Signature Verification attempted on.

Usage

add_filter( 'wp_signature_hosts', 'filter_function_name_8574' );
function filter_function_name_8574( $hostnames ){
	// filter...

	return $hostnames;
}
$hostnames(string[])
List of hostnames.

Changelog

Since 5.2.0 Introduced.

Where the hook is called

download_url()
wp_signature_hosts
wp-admin/includes/file.php 1109
$signed_hostnames       = apply_filters( 'wp_signature_hosts', array( 'wordpress.org', 'downloads.wordpress.org', 's.w.org' ) );

Where in WP core the hook is used WordPress

Usage not found.