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：
rush:PHP;">
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
",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(); ?>
",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(); ?>
rush:sql;">
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。
