Using Sub-Directories for Default_controller

As far as i know,

You should use your controller name at first , then you can also use the name of a function inside it

PHP Code:

$route['default_controller'] = 'coltroller/function'; 


so in your case you should have a controller admin.php in your `controllers` folder, which has the function `dashboard` inside it

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You can also do this:

PHP Code:

$route['default_controller'] = 'welcome'; 


Then inside your welcome controller do a simple redirect

PHP Code:

redirect("admin/dashboard");