php+Mysqli利用事务处理转账问题实例

本文实例讲述了PHP+MysqLi利用事务处理转账问题的方法。分享给大家供大家参考。具体实现方法如下：

rush:PHP;"> $mysqli = new mysqli("localhost","root","064319","php");
$mysqli->set_charset("utf8");

if($MysqLi->connect_errno) {
die('数据库连接失败'.$MysqLi->connect_error);
}

$MysqLi->autocommit(false); //自动提交模式设为false
$flag = true; //事务是否成功执行的标志

$query = "update account set balance=balance-1000 where id=3";
$result = $MysqLi->query($query);
$affected_count = $MysqLi->affected_rows;
if(!result || $affected_count == 0) { //失败
$flag = false;
}

$query = "update account set balance=balance+1000 where id=2";
$result = $MysqLi->query($query);
$affected_count = $MysqLi->affected_rows;
if(!$result || $affected_count == 0) {
$flag = false;
}

if($flag) {
$MysqLi->commit();
echo '转账成功';
} else {
$MysqLi->rollback();
echo '转账失败';
}

$MysqLi->autocommit(true); //重新设置事务为自动提交
$MysqLi->close();
?>

希望本文所述对大家的PHP程序设计有所帮助。