PHP+MYSQLI transaction control implement Bank transfer Example _php tutorial

Php+mysqli transaction control implements Bank transfer example

This article mainly introduced the PHP+MYSQLI transaction control realizes the bank transfer, the example analyzes the thing control principle and the thing rollback the use skill, needs the friend to refer

This paper describes 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 a previous statement execution succeeds and no subsequent execution succeeds, the rollback is to the state before execution. Use the bank transfer case to illustrate the application. One account turns the money out, and the other account has to have money to transfer it.

The code is as follows:

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1. Create a 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, do not commit automatically $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 failed"; $mysqli->rollback ();//If one is unsuccessful, roll back }else{ $mysqli->commit ();//Two statements are executed successfully, the commit echo "Transfer success"; } ?>

I hope this article is helpful to everyone's PHP programming.

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