Index: branches/5.2.x/core/kernel/utility/http_query.php
===================================================================
--- branches/5.2.x/core/kernel/utility/http_query.php
+++ branches/5.2.x/core/kernel/utility/http_query.php
@@ -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;