From e8a1744ac0bcc5363feea5a1901f4bc3645b2b8b Mon Sep 17 00:00:00 2001
From: michelvaldrighi <michelvaldrighi@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Wed, 29 Sep 2004 20:33:05 +0000
Subject: [PATCH] rather ugly fix to prevent the querying of unknown/removed
 options, feel free to replace it with a better alternative someday

git-svn-id: http://svn.automattic.com/wordpress/trunk@1723 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/functions.php | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 79f63f1181..8d13a1e718 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -299,20 +299,33 @@ function url_to_postid($url = '') {
 /* Options functions */
 
 function get_settings($setting) {
-	global $wpdb, $cache_settings;
+  global $wpdb, $cache_settings, $cache_nonexistantoptions;
 	if ( strstr($_SERVER['REQUEST_URI'], 'wp-admin/install.php') || strstr($_SERVER['REQUEST_URI'], 'wp-admin/upgrade.php') )
 		return false;
 
 	if ( empty($cache_settings) )
 		$cache_settings = get_alloptions();
 
+	if ( empty($cache_nonexistantoptions) )
+		$cache_nonexistantoptions = array();
+
 	if ('home' == $setting && '' == $cache_settings->home)
 		return $cache_settings->siteurl;
 
 	if ( isset($cache_settings->$setting) ) :
 		return $cache_settings->$setting;
 	else :
+		// for these cases when we're asking for an unknown option
+		if ( isset($cache_nonexistantoptions[$setting]) )
+			return false;
+
 		$option = $wpdb->get_var("SELECT option_value FROM $wpdb->options WHERE option_name = '$setting'");
+
+		if (!$option) :
+			$cache_nonexistantoptions[] = $setting;
+			return false;
+		endif;
+	  
 		if (@ $kellogs =  unserialize($option) ) return $kellogs;
 		else return $option;
 	endif;