init.php

<?php

// Define the project CONSTANTS
if (!defined('PUBLIC_FOLDER_ROOT')) {
    define('PUBLIC_FOLDER_ROOT',  $_SERVER['DOCUMENT_ROOT']);
}

if(!defined('PUBLIC_FOLDER_NAME')){
    define('PUBLIC_FOLDER_NAME', 'public');
}

if(!defined('SECURE_FOLDER_NAME')){
    define('SECURE_FOLDER_NAME', 'secure');
}

if(!defined('PUBLIC_FOLDER_SPACE')){
    define('PUBLIC_FOLDER_SPACE', '');
}

// PUBLIC_CONTENT_PATH = the live directory where site content lives (style/, assets/, scripts/)
// When a space is defined (e.g. 'quicksite'), content is at PUBLIC_FOLDER_ROOT/quicksite/
// When no space is used, content is at PUBLIC_FOLDER_ROOT directly
if (!defined('PUBLIC_CONTENT_PATH')) {
    define('PUBLIC_CONTENT_PATH', PUBLIC_FOLDER_SPACE !== '' 
        ? PUBLIC_FOLDER_ROOT . '/' . PUBLIC_FOLDER_SPACE 
        : PUBLIC_FOLDER_ROOT);
}

if(!defined('SERVER_ROOT')){
    // Remove only the rightmost occurrence of PUBLIC_FOLDER_NAME from path
    // This prevents issues when folder name appears multiple times in path
    // e.g., C:/wamp64/www/mysite/www -> C:/wamp64/www/mysite/ (not C:/wamp64//mysite/)
    $folderPattern = '/' . preg_quote(PUBLIC_FOLDER_NAME, '/') . '[\\\\\\/]?$/';
    define('SERVER_ROOT', rtrim(preg_replace($folderPattern, '', PUBLIC_FOLDER_ROOT), '/\\'));
}

if (!defined('SECURE_FOLDER_PATH')) {
    // SECURE_FOLDER_PATH = engine files (admin, management, src)
    define('SECURE_FOLDER_PATH', SERVER_ROOT . DIRECTORY_SEPARATOR . SECURE_FOLDER_NAME);
}