How to use php mysqli_rollback function

php The mysqli_rollback function is used to roll back the current transaction of the specified database connection. Its syntax is mysqli_rollback(connection). The parameter connection is required and refers to the MySQL connection to be used.

php How to use the mysqli_rollback function?

Definition and usage

mysqli_rollback() function rolls back the current transaction of the specified database connection.

Tip: Please see the mysqli_commit() function, which is used to commit the current transaction for the specified database connection. Please see the mysqli_autocommit() function for turning automatic commit of database modifications on or off.

Syntax

mysqli_rollback(connection);

Parameters

connection Required. Specifies the MySQL connection to use.

Return value: TRUE if successful, FALSE if failed.

PHP Version: 5

Turn off autocommit, do some queries, submit the query, then roll back the current transaction:

<?php 
// 假定数据库用户名：root，密码：123456，数据库：RUNOOB 
$con=mysqli_connect("localhost","root","123456","RUNOOB"); 
if (mysqli_connect_errno($con)) 
{ 
    echo "连接 MySQL 失败: " . mysqli_connect_error(); 
} 
// 关闭自动提交
mysqli_autocommit($con,FALSE);
// 插入数据
mysqli_query($con,"INSERT INTO websites (name, url, alexa, country)
VALUES (&#39;百度&#39;,&#39;https://www.baidu.com/&#39;,&#39;4&#39;,&#39;CN&#39;)");
mysqli_query($con,"INSERT INTO websites (name, url, alexa, country)
VALUES (Facebook&#39;,&#39;https://www.facebook.com/&#39;,&#39;2&#39;,&#39;USA&#39;)");
// 提交事务
mysqli_commit($con);
//回滚事务
mysqli_rollback($con);
// 关闭连接
mysqli_close($con);
?>

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