common.lib.php should REALLY REALLY and ALWAYS be the first include

db_datadict.php

@@ -5,8 +5,9 @@
 /**
  * Gets the variables sent or posted to this script, then displays headers
  */
+require_once('./libraries/common.lib.php');
+
 if (!isset($selected_tbl)) {
-    require_once('./libraries/grab_globals.lib.php');
     require_once('./header.inc.php');
 }