What should I do if I forget my password when logging in to the PHP background?

In the background management system, when we forget the login password, the management work may not be able to continue. What should we do in this case? This article will introduce how to reset the password to log in to the system if you forget the password in the PHP background.

1. Retrieve the administrator account

First you need to retrieve the administrator account. Under normal circumstances, the administrator account can be found in the database. You only need to find the corresponding administrator table, that is You can see the administrator account, password, permissions and other information.

2. Reset Password

After finding the administrator account, you need to reset the password. This step requires PHP code to implement. The specific operations are as follows:

1. Open the database connection

Open the database connection in the PHP file and use the mysql_connect or mysqli_connect function to complete. After the connection is successful, select the corresponding database and management Member list.

2. Update administrator password

Use the update statement to update the administrator password, and add a where condition to the update statement to specify the specific account.

The sample code is as follows:

<?php
    // 打开数据库连接
    $con = mysqli_connect("localhost","userName","password","databaseName");
    if (!$con){
        die(&#39;Could not connect: &#39; . mysqli_error());
    }
    // 指定管理员账户
    $userName = "admin";
    // 指定新密码
    $newPassword = "newPassword";
    // 更新密码
    $sql="UPDATE admin SET password=&#39;$newPassword&#39; WHERE username=&#39;$userName&#39;";
    if(mysqli_query($con,$sql)){
        // 更新成功，输出提示
        echo "密码已更新，请使用新密码登录。";
    }else{
        // 更新失败，输出错误信息
        echo "更新失败: " . mysqli_error($con);
    }
    mysqli_close($con);
?>

In the above code, $userName refers to the administrator account, and $newPassword refers to the administrator's new password.

It should be noted that when resetting the password, the password must be encrypted to ensure password security.

3. Modify the administrator's email address

Some systems support retrieving passwords through the administrator's email address. In this case, you need to modify the administrator's email address first, and then retrieve the password through the email address.

The method of modifying the administrator's email is similar to changing the password. Just change the password in the above code to email. An example is as follows:

<?php
    // 打开数据库连接
    $con = mysqli_connect("localhost","userName","password","databaseName");
    if (!$con){
        die(&#39;Could not connect: &#39; . mysqli_error());
    }
    // 指定管理员账户
    $userName = "admin";
    // 指定新邮箱
    $newEmail = "newEmail@example.com";
    // 更新邮箱
    $sql="UPDATE admin SET email=&#39;$newEmail&#39; WHERE username=&#39;$userName&#39;";
    if(mysqli_query($con,$sql)){
        // 更新成功，输出提示
        echo "邮箱已更新，请关注新邮箱接收信息。";
    }else{
        // 更新失败，输出错误信息
        echo "更新失败: " . mysqli_error($con);
    }
    mysqli_close($con);
?>

In the above code, $userName refers to the administrator account, and $newEmail refers to the administrator's new email address.

4. Summary

When the administrator password is forgotten, updating the password through PHP code is a simple and effective method. It should be noted that the password must be encrypted to ensure account security. If the system supports password retrieval through email, you can first modify the administrator's email and retrieve the password through the email.

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