解析php mysql 事务处理回滚操作(附实例)
很多新手在进行项目过程中,会碰到这样一种情况,如:论坛扣币项目中,用户支付论坛币的时候如果突然断网、电脑死机、停电、等其它自然灾害时,导致本次交易没有成功(即用户的币已经扣掉了,但是服务器数据库中没有消费记录等其它情况),这种情况应该怎么样进行处理呢?
在这个时候,我们可以用Mysql事务回滚来进行处理,那代码怎么写呢?
那下面我就来说一说这个mysql事务回滚应该怎么处理。
首先MYSQL中只有INNODB和BDB类型的数据表才能支持事务处理!其他的类型是不支持的!
那如果,我们的数据表已经存在,并且不是上面所说的两种类型的话,应该怎么办呢?
1、我可以去找一个叫MySQL-Front的软件,里面能更改表类型。
2、我们也可以通过SQL语句来更改,sql语句可以这样写:
复制代码 代码如下:
ALTER TABLE TABLENAME type = InnoDB;
将需要修类型的表全更改完成后,我们可以到PHP文件中用代码进行测试了。
复制代码 代码如下:
mysql_query("BEGIN"); //或者mysql_query("START TRANSACTION");
$sql = "INSERT INTO ...";
$sql2 = "INSERT INTO ...";
$res = mysql_query($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");
看到这里,应该知道怎么用PHP来处理mysql的事务回滚了吧。很简单吧!

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