Php/func mysqli rollback
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PHP mysqli rollback()函数
示例-面向对象的样式
关闭自动提交,进行一些查询,提交查询,然后回滚当前事务:
<?php $mysqli = new mysqli("localhost","my_user","my_password","my_db"); if ($mysqli -> connect_errno) { echo "Failed to connect to MySQL: " . $mysqli -> connect_error; exit(); } // Turn autocommit off $mysqli -> autocommit(FALSE); // Insert some values $mysqli -> query("INSERT INTO Persons (FirstName,LastName,Age) VALUES ('Peter','Griffin',35)"); $mysqli -> query("INSERT INTO Persons (FirstName,LastName,Age) VALUES ('Glenn','Quagmire',33)"); // Commit transaction if (!$mysqli -> commit()) { echo "Commit transaction failed"; exit(); } // Rollback transaction $mysqli -> rollback(); $mysqli -> close(); ?>
在底部查看程序样式的示例。
定义和用法
rollback()/ mysqli_rollback()函数为指定的数据库连接回滚当前事务。
Tip: 也看看 承诺()
函数,用于提交当前事务,并且 autocommit()
功能,打开或关闭自动提交数据库修改。
句法
面向对象的样式:
$mysqli -> rollback(flags, name)
程序风格:
mysqli_rollback(connection, flags, name)
参数值
参数 | 描述 |
---|---|
connection | 需要。指定要使用的MySQL连接 |
flags |
可选的。常量:
|
name | 可选的。回滚/ *
name 如果指定此参数,则执行* / |
技术细节
返回值: | 成功则为真。失败时为假 |
PHP版本: | 5+ |
PHP更新日志: | PHP 5.5:添加了
flags and name 参数 |
示例-程序风格
关闭自动提交,进行一些查询,提交查询,然后回滚当前事务:
<?php $con=mysqli_connect("localhost","my_user","my_password","my_db"); if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); exit; } // Turn autocommit off mysqli_autocommit($con,FALSE); // Insert some values mysqli_query($con,"INSERT INTO Persons (FirstName,LastName,Age) VALUES ('Peter','Griffin',35)"); mysqli_query($con,"INSERT INTO Persons (FirstName,LastName,Age) VALUES ('Glenn','Quagmire',33)"); // Commit transaction if (!$mysqli_commit($con)) { echo "Commit transaction failed"; exit(); } // Rollback transaction mysqli_rollback($con); // Close connection mysqli_close($con); ?>