Warning: Use of undefined constant TOOL_PATH - assumed 'TOOL_PATH' (this will throw an Error in a future version of PHP) in D:\Apache24\htdocs\center\php\a.php on line 2

Warning: require_once(TOOL_PATHbarcodegen/class/drawer/test.php): failed to open stream: No such file or directory in D:\Apache24\htdocs\center\php\a.php on line 2

Fatal error: require_once(): Failed opening required 'TOOL_PATHbarcodegen/class/drawer/test.php' (include_path='.;C:\php\pear') in D:\Apache24\htdocs\center\php\a.php on line 2