diff --git a/phpBB/includes/diff/diff.php b/phpBB/includes/diff/diff.php
index ef018b2d9a..bc99ebdd85 100644
--- a/phpBB/includes/diff/diff.php
+++ b/phpBB/includes/diff/diff.php
@@ -17,7 +17,7 @@ if (!defined('IN_PHPBB'))
 }
 
 /**
-* Code from pear.php.net, Text_Diff-1.0.0 package
+* Code from pear.php.net, Text_Diff-1.1.0 package
 * http://pear.php.net/package/Text_Diff/
 *
 * Modified by phpBB Group to meet our coding standards
@@ -60,6 +60,48 @@ class diff
 		return $this->_edits;
 	}
 
+	/**
+	* returns the number of new (added) lines in a given diff.
+	*
+	* @since Text_Diff 1.1.0
+	*
+	* @return integer The number of new lines
+	*/
+	function count_added_lines()
+	{
+		$count = 0;
+
+		foreach ($this->_edits as $edit)
+		{
+			if (is_a($edit, 'diff_op_add') || is_a($edit, 'diff_op_change'))
+			{
+				$count += $edit->nfinal();
+			}
+		}
+		return $count;
+	}
+
+	/**
+	* Returns the number of deleted (removed) lines in a given diff.
+	*
+	* @since Text_Diff 1.1.0
+	*
+	* @return integer The number of deleted lines
+	*/
+	function count_deleted_lines()
+	{
+		$count = 0;
+
+		foreach ($this->_edits as $edit)
+		{
+			if (is_a($edit, 'diff_op_delete') || is_a($edit, 'diff_op_change'))
+			{
+				$count += $edit->norig();
+			}
+		}
+		return $count;
+	}
+
 	/**
 	* Computes a reversed diff.
 	*
diff --git a/phpBB/includes/diff/engine.php b/phpBB/includes/diff/engine.php
index d82afb048a..eb0dcce395 100644
--- a/phpBB/includes/diff/engine.php
+++ b/phpBB/includes/diff/engine.php
@@ -17,7 +17,7 @@ if (!defined('IN_PHPBB'))
 }
 
 /**
-* Code from pear.php.net, Text_Diff-1.0.0 package
+* Code from pear.php.net, Text_Diff-1.1.0 package
 * http://pear.php.net/package/Text_Diff/ (native engine)
 *
 * Modified by phpBB Group to meet our coding standards
diff --git a/phpBB/includes/diff/renderer.php b/phpBB/includes/diff/renderer.php
index 2e0ec86e75..02fb6ccc37 100644
--- a/phpBB/includes/diff/renderer.php
+++ b/phpBB/includes/diff/renderer.php
@@ -17,7 +17,7 @@ if (!defined('IN_PHPBB'))
 }
 
 /**
-* Code from pear.php.net, Text_Diff-1.0.0 package
+* Code from pear.php.net, Text_Diff-1.1.0 package
 * http://pear.php.net/package/Text_Diff/
 *
 * Modified by phpBB Group to meet our coding standards