How to get files from subdomain?

To find the absolute path of a subdomain, copy the text below into a new text file, save the file as path.php. Put it in the subdomain, then open it in a Web browser (for example, https://www.example.com/images/subdomain/path.php).

<?php
 $p = getcwd();
 echo $p;
 ?>

copy the url and put it in the “Store uploads in this folder:”
Remove the path.php afterwards.

@keesiemeijer,
Thanks for helping!
I saved the path.php in this directory: /sub.main.com/htdocs
Then, I tried 2 links to open the file:

1. https://www.main.com/sub/path.php
This opens my blog with the header and sidebar, but main area shows Error 404 page not found;

2. https://www.sub.main.com/path.php
This shows connection timed out (can’t find the page).

I also tried to save the path.php in root of subdomain directory, and tried the above 2 links, the result is the same.

By the way, I didn’t install anything in the subdomain directory. It’s a directory automatically created when I create the subdomain under my main domain.

Any suggestion?

Regards

By the way, I didn’t install anything in the subdomain directory. It’s a directory automatically created when I create the subdomain under my main domain

I don’t think this is it: /sub.main.com/htdocs. Maybe this is it: /htdocs/sub/. Put it in the directory that is automaticly created. And then go to https://www.sub.main.com/path.php

I followed the above instruction, this time opened DNS service’s page saying the link can’t be loaded. I think the link you gave is correct, but I might be having problem on DNS. I can’t flushdns and reboot pc for the moment, I will try again and come back later.

Keesiemeijer,
After flushing DNS, I found the path via opening your path.php. Big thanks!

Regards