PHP+Mysql基于事务处理实现转账功能的方法_PHP

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("se<span>！本文来源gaodai#ma#com搞*!代#%^码网5</span><pre>搞gaodaima代码

lect 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。

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