wp-includes/sitemaps.php:103Retrieves the full URL for a sitemap.
$namestring$subtype_namestringoptional''$pageintoptional1string|falsefunction get_sitemap_url( $name, $subtype_name = '', $page = 1 ) { $sitemaps = wp_sitemaps_get_server(); if ( ! $sitemaps ) { return false; } if ( 'index' === $name ) { return $sitemaps->index->get_index_url(); } $provider = $sitemaps->registry->get_provider( $name ); if ( ! $provider ) { return false; } if ( $subtype_name && ! in_array( $subtype_name, array_keys( $provider->get_object_subtypes() ), true ) ) { return false; } $page = absint( $page ); if ( 0 >= $page ) { $page = 1; } return $provider->get_sitemap_url( $subtype_name, $page );}Introduced in 5.5.1. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/sitemaps.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.