本文实例讲述了PHP+Mysql基于事务处理实现转账功能的方法。分享给大家供大家参考。具体如下:
<?php
header(\"Content-Type:text/html;charset=utf-8\");
$mysqli=new mysqli(\"localhost\",\"root\",\"\",\"test\");
if(mysqli_connect_errno())
{
printf(\"连接失败:%s<br>\",mysqli_connect_error());
exit();
}
$success=TRUE;
$price=8000;
$result=$mysqli->query(\"select cash from account where name=\'userA\'\");
while($row=$result->fetch_assoc())
{
$value=$row[\"cash\"];
echo $value;
}
$mysqli->autocommit(0);
if($value>=$price){
$result=$mysqli->query(\"UPDATE account set cash=cash-$price where name=\'userA\'\");
}else {
echo \'余额不足\';
exit();
}
if(!$result or $mysqli->affected_rows!=1)
{
$success=FALSE;
}
$result=$mysqli->query(\"UPDATE account set cash=cash+$price where name=\'userB\'\");
if(!result or $mysqli->affected_rows!=1){
$success=FALSE;
}
if($success)
{
$mysqli->commit();
echo \'转账成功!\';
}else
{
$mysqli->rollback();
echo \"转账失败!\";
}
$mysqli->autocommit(1);
$query=\"select cash from account where name=?\";
$stmt=$mysqli->prepare($query);
$stmt->bind_param(\'s\',$name);
$name=\'userA\';
$stmt->execute();
$stmt->store_result();
$stmt->bind_result($cash);
while($stmt->fetch())
echo \"用户userA的值为:\".$cash;
$mysqli->close();
?>
数据库SQL语句如下:
create table account{
userID smallint unsigned not null auto_increment,
name varchar(45) not null,
cash decimal(9,2) not null,
primary key(userID)
)type=InnoDB;
insert into account(name,cash) values (\'userA\',\'2000\');
insert into account(name,cash) values (\'userB\',\'10000\');
希望本文所述对大家的php程序设计有所帮助。
本文地址:https://www.stayed.cn/item/2457
转载请注明出处。
本站部分内容来源于网络,如侵犯到您的权益,请 联系我