Index: branches/5.2.x/core/kernel/utility/http_query.php
===================================================================
diff -u -N -r16729 -r16782
--- branches/5.2.x/core/kernel/utility/http_query.php	(.../http_query.php)	(revision 16729)
+++ branches/5.2.x/core/kernel/utility/http_query.php	(.../http_query.php)	(revision 16782)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: http_query.php 16729 2022-09-13 12:33:28Z alex $
+* @version	$Id: http_query.php 16782 2024-01-15 09:32:05Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -795,18 +795,20 @@
 			// If apache_request_headers() exists...
 			$headers = apache_request_headers();
 
-			if ( $headers ) {
-				return $headers; // And works... Use it
+			if ( $headers !== false ) {
+				return $headers; // And works... Use it.
 			}
 		}
 
 		$headers = array();
 
-		foreach ( array_keys($_SERVER) as $server_key ) {
-			if ( substr($server_key, 0, 5) == 'HTTP_' ) {
-				$header_name = str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($server_key, 0, 5)))));
-				$headers[$header_name] = $_SERVER[$server_key];
-			}
+		$header_server_keys = array_filter(array_keys($_SERVER), function ($server_key) {
+			return strpos($server_key, 'HTTP_') === 0;
+		});
+
+		foreach ( $header_server_keys as $server_key ) {
+			$header_name = str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($server_key, 5)))));
+			$headers[$header_name] = $_SERVER[$server_key];
 		}
 
 		return $headers;