欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  后端开发

PHP+Mysql基于事务处理实现转账功能的方法_php技巧

程序员文章站 2022-04-17 11:50:16
...
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:

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。