The older mysql extension has the `CLIENT_FOUND_ROWS` connection flag, but I couldn't find any equivalent for **mysqli**.

I have an `update` query and want to know how many rows its `where` clause *matched*, not how many were actually changed (as indicated by `mysqli -> affected_rows`).

The only way I've figured out so far is to parse `mysqli -> info` (which looks something like `Rows matched: 40 Changed: 40 Warnings: 0`) with a regex. But that seems hacky.