<?php

require_once('MDB/QueryTool.php');	// declare QueryTool class

class MaNGOS_Item extends mdb_querytool {
};

?>
Fatal error: Class 'mdb_querytool' not found in E:\mangos\htdocs\MDB.php on line 5


==== 2nd test, seperate page ====
<?php

require_once('MDB/QueryTool.php');	// declare QueryTool class

class mdb_querytool {
};

?>
Fatal error: Cannot redeclare class mdb_querytool in E:\mangos\htdocs\MDB.php on line 5