Hello World appears on localhost

Question

Answer 1

localhost/
This will open index.php in the www directory index.html index.htm l.php

localhost/Demo/
This will open the Demo directory in your www index.php index.html index.htm l.php

The above Zhejiang West is in the configuration file httpd.conf, you can ignore it for now

localhost/Demo/test.php You can understand it by reading the test.php
in the Demo under www!

Answer 2

Create the php file and the path is set, but localhost opens the inde file under the www folder by default. I don’t understand it very well. How should I do it?