mysql_affected_rows和mysql_num_rows

mysql_affected_rows()取得前一次 MySQL 操作所影响的记录行数.一般UPDATE, DELETE操作

mysql_num_rows()

返回结果集中行的数目，一般是SELECT操作

The above introduces mysql_affected_rows and mysql_num_rows, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.