Restore getUserMemberStatus function to original implementation and fix database queries

driver_training.php

@@ -1,4 +1,5 @@
-<?php include_once('header02.php');
+<?php define('HEADER_VARIANT', '02');
+require_once('header.php');
 checkUserSession();
 
 // SQL query to fetch dates for driver training
@@ -7,7 +8,7 @@ $sql = "SELECT course_id, date
         WHERE course_type = 'driver_training' 
         AND date >= CURDATE()";
 
-$result = $conn->query($sql);
+$result = safeQuery($sql);
 $page_id = 'driver_training';
 
 ?>