Php server document root

- Php $_server 'document_root' not working
- Php $_server 'document_root' empty
- Php set $_server 'document_root'
- Php built in server document root
- $_server 'document_root' in php w3schools
- Php cli $_server document_root
- Php include($_server 'document_root'
- Php get server document root
- Php require_once($_server 'document_root'
- Php root
- Php docs
- Php server document_root