Index: branches/5.2.x/core/kernel/globals.php
===================================================================
diff -u -N -r15512 -r15513
--- branches/5.2.x/core/kernel/globals.php	(.../globals.php)	(revision 15512)
+++ branches/5.2.x/core/kernel/globals.php	(.../globals.php)	(revision 15513)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: globals.php 15512 2012-08-07 11:03:55Z alex $
+* @version	$Id: globals.php 15513 2012-08-11 16:30:08Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -680,6 +680,7 @@
 	 * @static
 	 * @param int $timestamp
 	 * @return DateTime
+	 * @access public
 	 */
 	public static function dateFromTimestamp($timestamp)
 	{
@@ -694,6 +695,23 @@
 
 		return $date;
 	}
+
+	/**
+	 * Returns timestamp from given DateTime class instance
+	 *
+	 * @static
+	 * @param DateTime $date_time
+	 * @return int|string
+	 * @access public
+	 */
+	public static function timestampFromDate(DateTime $date_time)
+	{
+		if ( version_compare(PHP_VERSION, '5.3.0', '<') ) {
+			return $date_time->format('U');
+		}
+
+		return $date_time->getTimestamp();
+	}
 }
 
 /**