Commit 1f1d223bc0f for php.net

commit 1f1d223bc0f9b293252dd1428baf837af7e4bf72
Author: Daniel Scherzer <daniel.e.scherzer+phpf@gmail.com>
Date:   Wed Sep 16 17:39:36 2026 -0700

    CLI server: document "Host" header reflection removal in UPGRADING

diff --git a/UPGRADING b/UPGRADING
index a8ae2045f89..5e551249f21 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -528,6 +528,8 @@ PHP 8.6 UPGRADE NOTES
 - CLI:
   . The built-in development server now accepts requests using the HTTP QUERY
     method instead of returning 501 Not Implemented.
+  . The built-in development server no longer reflects the "Host" header from
+    requests.

 ========================================
 4. Deprecated Functionality