php mysql事务处理回滚操作

表的类型首先要是InnoDB

<?php    $db_connect = mysql_connect('localhost','root','');    mysql_select_db('gmmenager',$db_connect);    mysql_query("BEGIN");    $sql = "insert into user (name,password) values (1111,1111);";    $sql2 = "insert into user (name,password) values (1111,1111);";    $res = mysql_query($sql);    $res1 = mysql_query($sql2);    if($res && $res1){        mysql_query("COMMIT");        echo '提交成功。';    }else{        mysql_query("ROLLBACK");        echo '数据回滚。';    }    mysql_query("END");?>