ThinkPHP jump problems, please help

For ThinkPHP jump, please help PHPcode $ url = U ('index/index'); echo $ url; redirect ($ url, 2, 'jump... '); after this jump, the portal file does not have the jump URL: http: // 127.0.0.1/Index/ThinkPHP jump problem, please help

PHP code

  $ Url = U ('index/index'); echo $ url; redirect ($ url, 2, 'Jump ...');

After this jump, the entry file is gone
URL after jump: http: // 127.0.0.1/Index/index

The page will be opened without an entry file.

Have you encountered such a problem?
Help

------ Solution --------------------
This is not a problem. The U method generates a url in the form of a second-level directory, and index. php is hidden. Besides, the entry file does not need to be displayed, and the page can be opened normally.
------ Solution --------------------
What is your portal file?