What should I do if the php transaction cannot be rolled back?

藏色散人
Release: 2023-03-17 07:18:01
Original
1237 people have browsed it

Solution to the problem that PHP transactions cannot be rolled back: 1. Open the corresponding PHP file; 2. Check the "function update_user_set_date_of_birth($date_of_birth){...}" code; 3. Pass "$this-> Mysqli->autocommit(false);" can be used to turn off automatic submission.

What should I do if the php transaction cannot be rolled back?

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, Dell G3 computer.

What should I do if the php transaction cannot be rolled back?

Problem description:

About php transaction not performing rollback

mysqliphptransactions
Transactions not doing the rollback
Copy after login

I have the function of updating users:

function update_user_set_common($date_of_birth, $mobile, $street, $housenumber, $addition, $postal_code, $location, $country)
{
    try {
        $this->mysqli->begin_transaction();
        $this->update_user_set_date_of_birth($date_of_birth);
        $this->update_user_set_mobile($mobile);
        $this->update_user_set_address($street, $housenumber, $addition, $postal_code, $location, $country);
        $this->mysqli->commit();
        return true;
    } catch (Exception $e) {
        $this->mysqli->rollback();
        echo"Error:" . $e;
        return false;
    }
}
Copy after login

As you can see, I made a transaction. If everything is OK, it should be committed, if an error occurs, it should be rolled back.

Here's an example of how my update query works:

function update_user_set_date_of_birth($date_of_birth)
{
    return $this->update_user_set_singlefield(COL_USER_DATE_OF_BIRTH, $date_of_birth);
}
function update_user_set_singlefield($field, $value)
{
    if ($update_stmt = $this->mysqli->prepare("UPDATE" . TABLE_USER ." SET" . $field ." = ? WHERE" . COL_USER_ID ." = ?")) :
        if (!$update_stmt->bind_param("ss", $value, $this->USER_ID)) :
            $update_stmt->close();
            return false;
        endif;
        if (!$update_stmt->execute()) :
            $update_stmt->close();
            return false;
        else :
            $update_stmt->close();
            return true;
        endif;
    else :
        return false;
    endif;
}
Copy after login

So now for example update_user_set_mobile fails, but there is no rollback. The statement before update_user_set_date_of_birth will still be executed and will not change back to the original one.

Why is there no rollback?

Example creating table to show me using innodb:

CREATE TABLE `USER` (
  `USER_ID` bigint(20) NOT NULL PRIMARY KEY AUTO_INCREMENT,
  `USER_E_MAIL` varchar(255) COLLATE utf8_bin NOT NULL,
  `USER_PASSWORT` varchar(255) COLLATE utf8_bin NOT NULL,
  `USER_PASSWORT_SALT` varchar(255) COLLATE utf8_bin NOT NULL,
  `USER_FIRSTNAME` varchar(255) COLLATE utf8_bin NOT NULL,
  `USER_LASTNAME` varchar(255) COLLATE utf8_bin NOT NULL,
  `USER_DATE_OF_BIRTH` varchar(200) COLLATE utf8_bin DEFAULT NULL,
  `USER_MOBILE` varchar(255) COLLATE utf8_bin DEFAULT NULL,
  `ADDRESS_ID` bigint(20) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
Copy after login

Problem solved:

Turn off autocommit instead of mysqli-> begin_transaction();

$this->mysqli->autocommit(false);
Copy after login

http://php.net/manual/zh/mysqli.autocommit.php

Recommended learning: "PHP Video Tutorial"

The above is the detailed content of What should I do if the php transaction cannot be rolled back?. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!