Initial commit

wordpress_plugins/wp-config-file-editor/Compatibility/4.3.0.php

@@ -0,0 +1,47 @@
+<?php
+
+if ( ! function_exists( 'get_main_network_id' ) )
+{
+    
+    /**
+     * Get the main network ID.
+     *
+     * @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;
+        }
+
+        if ( defined( 'PRIMARY_NETWORK_ID' ) ) {
+            $main_network_id = PRIMARY_NETWORK_ID;
+        } elseif ( 1 === (int) get_current_site()->id ) {
+            // If the current network has an ID of 1, assume it is the main network.
+            $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' );
+            }
+        }
+
+        /**
+         * Filter the main network ID.
+         *
+         * @since 4.3.0
+         *
+         * @param int $main_network_id The ID of the main network.
+         */
+        return (int) apply_filters( 'get_main_network_id', $main_network_id );
+    }
+    
+    
+}