function didn't work

[Katronix]

Hello all from Soggy Houston, TX!

I tried this function:


function getConfig ($search='')
{
require_once 'users/init.php';
require_once $abs_us_root.$us_url_root.'users/includes/header.php';
$config = $db->query("select options from config where setting = ?",array($search));
$back = $config->first()->options;
return $back;
}

and received the following errors:

Notice: Undefined variable: abs_us_root in C:\xampp\htdocs\follower\function.php on line 7

Notice: Undefined variable: us_url_root in C:\xampp\htdocs\follower\function.php on line 7

Notice: Undefined variable: db in C:\xampp\htdocs\follower\function.php on line 8

Fatal error: Uncaught Error: Call to a member function query() on null in C:\xampp\htdocs\follower\function.php:8 Stack trace: #0 C:\xampp\htdocs\follower\index.php(11): getConfig('logo') #1 {main} thrown in C:\xampp\htdocs\follower\function.php on line 8

This was to the call of: $set = getConfig('logo');

Can anyone point me where I went wrong?