wp-admin/includes/network.php:87Get base domain of network.
stringfunction get_clean_basedomain() { $existing_domain = network_domain_check(); if ( $existing_domain ) { return $existing_domain; } $domain = preg_replace( '|https?://|', '', get_option( 'siteurl' ) ); $slash = strpos( $domain, '/' ); if ( $slash ) { $domain = substr( $domain, 0, $slash ); } return $domain;}Introduced in 3.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/network.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.