Make it look in the current directory instead of a fixed path for the config file.

search.php

@@ -2,7 +2,7 @@
   require_once('backend.php');
   
   $backend = new Backend();
-  $backend->connect('/var/www/config.ini');
+  $backend->connect('config.ini');
   if (!$backend->auth($_POST['username'], $_POST['password'])) {
     header($_SERVER['SERVER_PROTOCOL'].' 403 Forbidden');
     header('Status: 403 Forbidden');