The following line...
require_once $abs_us_root.$us_url_root.'users/includes/header.php';
is producing the IDE error:
Path '/var/www/projectName$us_url_rootusers/includes/header.php' not found.
the actual path to the file is
/var/www/projectName/public_html/users/includes/header.php
The variable is defined as:
$abs_us_root = $_SERVER['DOCUMENT_ROOT'];
Here are the deployment options I have set...
Type: Local or mounted folder
Upload/download project files: /var/www/projectName
Web server root URL: http://projectName
Local path: /var/www/projectName/public_html
Deployment path on server: /
Web path on server: /