wp-includes/class-wp-network.php:334Retrieves the closest matching network for a domain and path.
$domainstringoptional''$pathstringoptional''$segmentsint|nulloptionalnullWP_Network|false2 hooks fire while WP_Network::get_by_path() runs, in this order:
Filters the number of path segments to consider when searching for a site.
Determines a network by its domain and path.
public static function get_by_path( $domain = '', $path = '', $segments = null ) { $domains = array( $domain ); $pieces = explode( '.', $domain ); /* * It's possible one domain to search is 'com', but it might as well * be 'localhost' or some other locally mapped domain. */ while ( array_shift( $pieces ) ) { if ( ! empty( $pieces ) ) { $domains[] = implode( '.', $pieces ); } } /* * If we've gotten to this function during normal execution, there is * more than one network installed. At this point, who knows how many * we have. Attempt to optimize for the situation where networks are * only domains, thus meaning paths never need to be considered. * * This is a very basic optimization; anything further could have * drawbacks depending on the setup, so this is best done per-installation. */ $using_paths = true; if ( wp_using_ext_object_cache() ) { $using_paths = get_networks( array( 'number' => 1, 'count' => true, 'path__not_in' => '/', ) ); } $paths = array(); if ( $using_paths ) { $path_segments = array_filter( explode( '/', trim( $path, '/' ) ) ); /** * Filters the number of path segments to consider when searching for a site. * * @since 3.9.0 * * @param int|null $segments The number of path segments to consider. WordPress by default looks at * one path segment. The function default of null only makes sense when you * know the requested path should match a network. * @param string $domain The requested domain. * @param string $path The requested path, in full. */ $segments = apply_filters( 'network_by_path_segments_count', $segments, $domain, $path ); if ( ( null !== $segments ) && count( $path_segments ) > $segments ) { $path_segments = array_slice( $path_segments, 0, $segments ); } while ( count( $path_segments ) ) { $paths[] = '/' . implode( '/', $path_segments ) . '/'; array_pop( $path_segments ); } $paths[] = '/'; } /** * Determines a network by its domain and path. * * This allows one to short-circuit the default logic, perhaps by * replacing it with a routine that is more optimal for your setup. * * Return null to avoid the short-circuit. Return false if no network * can be found at the requested domain and path. Otherwise, return * an object from wp_get_network(). * * @since 3.9.0 * * @param null|false|WP_Network $network Network value to return by path. Default null * to continue retrieving the network. * @param string $domain The requested domain. * @param string $path The requested path, in full. * @param int|null $segments The suggested number of paths to consult.Introduced in 4.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-network.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.