1 files changed, 13 insertions, 4 deletions

diff --git a/system/libraries/Input.php b/system/libraries/Input.php
index f9d23ae79..9a73ab9b9 100644
--- a/system/libraries/Input.php
+++ b/system/libraries/Input.php
@@ -68,21 +68,30 @@ class CI_Input {
 	 */

 	function _sanitize_globals()

 	{

+		// Would kind of be "wrong" to unset any of these GLOBALS.

+		$protected = array('_SERVER', '_GET', '_POST', '_FILES', '_REQUEST', '_SESSION', '_ENV', 'GLOBALS', 'HTTP_RAW_POST_DATA');

+		

 		// Unset globals for securiy. 

 		// This is effectively the same as register_globals = off

 		foreach (array($_GET, $_POST, $_COOKIE) as $global)

 		{

 			if ( ! is_array($global))

 			{

-				global $global;

-				$$global = NULL;

+				if ( ! in_array($global, $protected))

+				{

+					global $global;

+					$$global = NULL;

+				}

 			}

 			else

 			{

 				foreach ($global as $key => $val)

 				{

-					global $$key;

-					$$key = NULL;

+					if ( ! in_array($key, $protected))

+					{

+						global $$key;

+						$$key = NULL;

+					}

 				}	

 			}

 		}