Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in D:\host\fengniao11\web\music\index.php on line 19

Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in D:\host\fengniao11\web\music\index.php on line 22

程序运行失败:

您的 PHP 版本低于最低要求 5.4,当前版本为 5.2.17
PHP Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in D:\host\fengniao11\web\music\index.php on line 19 PHP Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in D:\host\fengniao11\web\music\index.php on line 22