From 918985616947825381d2006ac62ba1b9e726f8ea Mon Sep 17 00:00:00 2001
From: westi <westi@1a063a9b-81f0-0310-95a4-ce76da25c4cd>
Date: Tue, 22 Dec 2009 13:10:06 +0000
Subject: [PATCH] Much improved is_serialized() which catches serialized
 doubles. Fixes #9930 props vladimir_kolesnikov and dd32.

git-svn-id: http://svn.automattic.com/wordpress/trunk@12485 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/functions.php | 24 +-----------------------
 1 file changed, 1 insertion(+), 23 deletions(-)

diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 22b962c0fd..bc0b8ba906 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -245,29 +245,7 @@ function maybe_unserialize( $original ) {
  * @return bool False if not serialized and true if it was.
  */
 function is_serialized( $data ) {
-	// if it isn't a string, it isn't serialized
-	if ( !is_string( $data ) )
-		return false;
-	$data = trim( $data );
-	if ( 'N;' == $data )
-		return true;
-	if ( !preg_match( '/^([adObis]):/', $data, $badions ) )
-		return false;
-	switch ( $badions[1] ) {
-		case 'a' :
-		case 'O' :
-		case 's' :
-			if ( preg_match( "/^{$badions[1]}:[0-9]+:.*[;}]\$/s", $data ) )
-				return true;
-			break;
-		case 'b' :
-		case 'i' :
-		case 'd' :
-			if ( preg_match( "/^{$badions[1]}:[0-9.E-]+;\$/", $data ) )
-				return true;
-			break;
-	}
-	return false;
+	return is_string($data) && preg_match('/^(N;)|([aOs]:[0-9]+:.*[;}])|([bid]:[0-9.E+-]+;)$/s', $data);
 }
 
 /**