Php+mysqli transaction control to realize _php skills of bank transfer cases

This paper illustrates the method of PHP+MYSQLI transaction control to realize bank transfer. Share to everyone for your reference. The specific analysis is as follows:

Transaction control, which means that all statements are executed successfully before they are committed. Otherwise, if the preceding statement succeeds without succeeding, roll back to the state before execution. This application is illustrated by the case of bank transfers. One account transfer money out, another account must have money to transfer, so that is successful.

The code is as follows:

<?php
//1, CREATE database Connection object
$mysqli = new mysqli ("localhost", "root", "123456", "Liuyan");
if ($mysqli->connect_error) {
 die ($mysqli->connect_error);
}
$mysqli->query ("Set names ' GBK '");

$mysqli->autocommit (false);
First set Autocommit to False, that is, not autocommit

$sql 1 = "Update account set balance=balance-2 where id=1;";
$sql 2 = "Update account set balance=balance+2 where id=2;";
$res 1 = $mysqli->query ($sql 1) or Die ($mysqli->error);
$res 2 = $mysqli->query ($sql 2) or Die ($mysqli->error);

if (! $res 1 | |! $res 2) {
 echo "transfer failure";
 $mysqli->rollback ()//If one is unsuccessful, rollback
}else{
 $mysqli->commit (), and//Two statements are executed successfully, submit
 echo "Transfer succeeded";
}
?>

I hope this article will help you with your PHP program design.