note 102523 added to mysqli.affected-rows

On "INSERT INTO ON DUPLICATE KEY UPDATE" queries, though one may expect affected_rows to return only 0 or 1 per row on successful queries, it may in fact return 2. From Mysql manual: "With ON DUPLICATE KEY UPDATE, the affected-rows value per row is 1 if the row is inserted as a new row and 2 if an existing row is updated." See: http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html Here's the sum breakdown _per row_: +0: a row wasn't updated or inserted (likely because the row already existed, but no field values were actually changed during the UPDATE) +1: a row was inserted +2: a row was updated ---- Server IP: 69.147.83.197 Probable Submitter: 65.36.73.107 ---- Manual Page -- http://www.php.net/manual/en/mysqli.affected-rows.php Edit -- https://master.php.net/note/edit/102523 Del: integrated -- https://master.php.net/note/delete/102523/integrated Del: useless -- https://master.php.net/note/delete/102523/useless Del: bad code -- https://master.php.net/note/delete/102523/bad+code Del: spam -- https://master.php.net/note/delete/102523/spam Del: non-english -- https://master.php.net/note/delete/102523/non-english Del: in docs -- https://master.php.net/note/delete/102523/in+docs Del: other reasons-- https://master.php.net/note/delete/102523 Reject -- https://master.php.net/note/reject/102523 Search -- https://master.php.net/manage/user-notes.php