Changeset 38632

Timestamp:

09/20/2016 06:46:52 PM (8 years ago)

Author:

jeremyfelt

Message:

Multisite: Use get_networks() in get_main_network_id().

The manual query for the main network ID can now be replaced with a cached get_networks() query. This allows us to eliminate the primary_network_id cache key entirely.

Props spacedmonkey.
Fixes #37218.

File:

• trunk/src/wp-includes/functions.php (modified) (2 diffs)

trunk/src/wp-includes/functions.php

@@ -4354 +4354 @@
  * @since 4.3.0
  *
- * @global wpdb $wpdb WordPress database abstraction object.
- *
  * @return int The ID of the main network.
  */
 function get_main_network_id() {
-    global $wpdb;
-
     if ( ! is_multisite() ) {
         return 1;
@@ -4373 +4369 @@
         $main_network_id = 1;
     } else {
-        $main_network_id = wp_cache_get( 'primary_network_id', 'site-options' );
-
-        if ( false === $main_network_id ) {
-            $main_network_id = (int) $wpdb->get_var( "SELECT id FROM {$wpdb->site} ORDER BY id LIMIT 1" );
-            wp_cache_add( 'primary_network_id', $main_network_id, 'site-options' );
-        }
+        $_networks = get_networks( array( 'fields' => 'ids', 'number' => 1 ) );
+        $main_network_id = array_shift( $_networks );
     }