From 51982620ce1e018094edbbea4b52e18311565622 Mon Sep 17 00:00:00 2001
From: Andrew Nacin <nacin@git.wordpress.org>
Date: Wed, 10 Aug 2011 19:00:45 +0000
Subject: [PATCH] Don't process wpdb->tables('global') inside a loop. props
 wpmuguru, fixes #14503.

git-svn-id: https://develop.svn.wordpress.org/trunk@18522 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/includes/upgrade.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/wp-admin/includes/upgrade.php b/wp-admin/includes/upgrade.php
index f29f594eda..40257a14ab 100644
--- a/wp-admin/includes/upgrade.php
+++ b/wp-admin/includes/upgrade.php
@@ -1406,9 +1406,10 @@ function dbDelta($queries, $execute = true) {
 	// Check to see which tables and fields exist
 	if ($tables = $wpdb->get_col('SHOW TABLES;')) {
 		// For every table in the database
+		$global_tables = $wpdb->tables( 'global' );
 		foreach ($tables as $table) {
 			// Upgrade global tables only for the main site. Don't upgrade at all if DO_NOT_UPGRADE_GLOBAL_TABLES is defined.
-			if ( in_array($table, $wpdb->tables('global')) && ( !is_main_site() || defined('DO_NOT_UPGRADE_GLOBAL_TABLES') ) )
+			if ( in_array( $table, $global_tables ) && ( !is_main_site() || defined( 'DO_NOT_UPGRADE_GLOBAL_TABLES' ) ) )
 				continue;
 
 			// If a table query exists for the database table...