How to get ID of the last updated row in MySQL?

Question

How do I get the ID of the last updated row in MySQL using PHP?

Answer 1

SET @uids := "";
UPDATE myf___ingtable
   SET id = id
   WHERE id < 5
  AND ( SELECT @uids := CONCAT_WS(',', CAST(id AS CHAR CHARACTER SET utf8), @uids) );
SELECT @uids;

I had to CAST the id (dunno why)... or I cannot get the @uids content (it was a blob) Btw many thanks for Pomyk answer!