wp-admin/includes/export.php:262Returns the URL of the site.
string function wxr_site_url() { if ( is_multisite() ) { // Multisite: the base URL. return network_home_url(); } else { // WordPress (single site): the site URL. return get_bloginfo_rss( 'url' ); } }Introduced in 2.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/export.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.