如何获取脚本的确切目录

Question

Say I run

http://mymaindomain.com/helloworld/somescript.php

I want http://mymaindomain.com/helloworld/

How do I do so?

Answer 1

Would you please check my answer?

https://stackoverflow.com/a/41407858/3821823

You can also define const variable like this:

const BASE_URL = 'http://mymaindomain.com/helloworld/';
// or
define('BASE_URL', 'http://mymaindomain.com/helloworld/');

echo BASE_URL;