1 files changed, 7 insertions, 0 deletions
diff --git a/UPGRADING b/UPGRADING
index a8ae9feeee..7f43588048 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -19,6 +19,13 @@ PHP 8.1 UPGRADE NOTES
 1. Backward Incompatible Changes
 ========================================
 
+- MySQLi:
+  . mysqli_fetch_fields() and mysqli_fetch_field_direct() will now always return
+    zero for max_length. You can compute this information by iterating over the
+    result set and taking the maximum length. This is what PHP was doing
+    internally previously.
+  . The MYSQLI_STMT_ATTR_UPDATE_MAX_LENGTH option no longer has an effect.
+
 - Standard:
   . version_compare() no longer accepts undocumented operator abbreviations.