Adding docblock and removing a call to array_slice()

cake/libs/view/helpers/text.php

@@ -328,11 +328,13 @@ function excerpt($text, $phrase, $radius = 100, $ending = '...') {
  * Creates a comma separated list where the last two items are joined with 'and', forming natural English
  *
  * @param array $list The list to be joined
- * @return string
+ * @param string $and The word used to join the last and second last items together with. Defaults to 'and'
+ * @param string $separator The separator used to join all othe other items together. Defaults to ', '
+ * @return string The glued together string.
  * @access public
  */
 	function toList($list, $and = 'and', $separator = ', ') {
-        return implode($separator, array_slice($list, null, -1)) . ' ' . $and . ' ' . array_pop(array_slice($list, -1));
+        return implode($separator, array_slice($list, null, -1)) . ' ' . $and . ' ' . array_pop($list);
 	}
 }
 ?>