Install Joomla in a subdirectory

Question

As some of you may know, Wordpress has an options in settings to allow site installation in a subdirectory, while having the site URL be the main domain. It was something li

Answer 1

You can override the file /includes/defines.php in your joomla installation. Copy this file to the root folder of your installation, and then change all folder names to how you like your setup.

In /index.php you see how it first checks if /defines.php exists. Then it goes on to load /includes/defines.php if _JDEFINES is not defined. So be sure to include

define('_JDEFINES', 'TRUE');

in your overridden /defines.php-file. Good luck :)

Below is how index.php loads folder definitions:

if (file_exists(__DIR__ . '/defines.php')){
  include_once __DIR__ . '/defines.php';
}
if (!defined('_JDEFINES')){
  define('JPATH_BASE', __DIR__);
  require_once JPATH_BASE . '/includes/defines.php';
}

I see now that you are able to override folder locations in /administrator in a similar matter, copy /administrator/includes/defines.php to /administrator and override folders here.