From 380a6661a14e96709f6b03f1d350d850ac22493e Mon Sep 17 00:00:00 2001
From: =?utf8?q?=C3=86var=20Arnfj=C3=B6r=C3=B0=20Bjarmason?=
 <avar@users.mediawiki.org>
Date: Fri, 9 Dec 2005 15:28:57 +0000
Subject: [PATCH] * Implemented a cache for User::getMaxID()

---
 includes/User.php | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/includes/User.php b/includes/User.php
index 057c070dc5..f3c32450b8 100644
--- a/includes/User.php
+++ b/includes/User.php
@@ -1542,8 +1542,14 @@ class User {
 	 * @static
 	 */
 	function getMaxID() {
-		$dbr =& wfGetDB( DB_SLAVE );
-		return $dbr->selectField( 'user', 'max(user_id)', false, 'User::getMaxID' );
+		static $res; // cache
+
+		if ( isset( $res ) )
+			return $res;
+		else {
+			$dbr =& wfGetDB( DB_SLAVE );
+			return $res = $dbr->selectField( 'user', 'max(user_id)', false, 'User::getMaxID' );
+		}
 	}
 
 	/**
-- 
2.20.1