wp-includes/class-wp-site.php:168Retrieves a site from the database by its ID.
$site_idintWP_Site|false public static function get_instance( $site_id ) { global $wpdb; $site_id = (int) $site_id; if ( ! $site_id ) { return false; } $_site = wp_cache_get( $site_id, 'sites' ); if ( false === $_site ) { $_site = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->blogs} WHERE blog_id = %d LIMIT 1", $site_id ) ); if ( empty( $_site ) || is_wp_error( $_site ) ) { $_site = -1; } wp_cache_add( $site_id, $_site, 'sites' ); } if ( is_numeric( $_site ) ) { return false; } return new WP_Site( $_site ); }Introduced in 4.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-site.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.