Ticket #33900: 33900.2.patch

wp-includes/load.php

@@ -774 +774 @@
         return absint($blog_id);
 }
 
+/** 
+  * Retrieve the current network ID. 
+  * 
+  * @since 4.5.0 
+  * 
+  * @global object $current_site 
+  * 
+  * @return int Network id 
+  */ 
+ function get_current_network_id() { 
+    global $current_site; 
+    if ( !$current_site instanceof WP_Network ) {
+        return 1;
+    }
+    return $current_site->id; 
+ } 
 /**
  * Attempt an early load of translations.
  *