PHP Mysql method to implement transfer function based on transaction processing, mysql transaction processing_PHP tutorial

How PHP Mysql implements the transfer function based on transaction processing, mysql transaction processing

This article describes the method of PHP Mysql implementing the transfer function based on transaction processing. Share it with everyone for your reference. The details are as follows:

<&#63;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=&#63;";
  $stmt=$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();
&#63;>

The database SQL statement is as follows:

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');

I hope this article will be helpful to everyone’s PHP programming design.

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