From 16adf7644ba659ebcbbc6f0c8e35152bbf20d042 Mon Sep 17 00:00:00 2001
From: Andrew Nacin <nacin@git.wordpress.org>
Date: Mon, 29 Jul 2013 18:14:05 +0000
Subject: [PATCH] Reset $wpdb->insert_id on a failed INSERT or REPLACE. See
 [24459] [24494].

git-svn-id: https://develop.svn.wordpress.org/trunk@24872 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/wp-db.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/wp-includes/wp-db.php b/wp-includes/wp-db.php
index 4f5a97eb47..2398002e32 100644
--- a/wp-includes/wp-db.php
+++ b/wp-includes/wp-db.php
@@ -1204,6 +1204,10 @@ class wpdb {
 
 		// If there is an error then take note of it..
 		if ( $this->last_error = mysql_error( $this->dbh ) ) {
+			// Clear insert_id on a subsequent failed insert.
+			if ( $this->insert_id && preg_match( '/^\s*(insert|replace)\s/i', $query ) )
+				$this->insert_id = 0;
+
 			$this->print_error();
 			return false;
 		}