我的是报错，这是为什么

Warning:  require_once(testController.class.php) [function.require-once]: failed to open stream: No such file or directory in D:\www\mvc\test.php on line 4

Fatal error:  require_once() [function.require]: Failed opening required 'testController.class.php' (include_path='.;C:\php\pear') in D:\www\mvc\test.php on line 4

以上是报错内容，跟老师是一样啊