Detailed explanation of PHP 401 error code and its causes

PHP 401 Error Code: Credentials required for parsing verification are not provided

When you browse the web, you may encounter some error codes such as 404, 500, 401, etc. Today we will discuss the PHP 401 error code. The 401 error code usually appears when you want to access a specific web page and a prompt appears requiring you to provide verification credentials. This credential can be your username and password, or it can be some specific information that allows the page to confirm that you have access to it.

In this article, we will take a deeper look at the PHP 401 error code and its causes, and provide some solutions to solve this problem.

What is PHP 401 error code?

First, let us look at the definition of PHP 401 error code. This error code is usually accompanied by a prompt, such as "HTTP Error 401 - Unauthorized" or "401 Unauthorized Error". What it means is: You do not have the credentials required to be authorized to access this page.

Simply put, if a page requires the user to authenticate, but no authentication credentials are provided in the request or the credentials provided are incorrect, then a 401 error code will appear. This typically occurs on pages that require the user to log in to view.

Causes of 401 error codes and their solutions

There may be many reasons for 401 error codes. Here are some common causes and their solutions.

• Invalid username or password

If an error occurs when entering the username and password, a 401 error code will appear. If you've forgotten your password, it's a good idea to try resetting it first. If resetting your password doesn't resolve the issue, you may need to contact the site's administrator to resolve the issue.

• Session Expiration

If you have logged into the website in the past, but you have not used the website for a long time, your session may have expired It has expired, requiring you to log in again. Try logging in again to resolve this issue.

• Server Configuration Error

Finally, if your server is not configured correctly, it may result in a 401 error code. In this case, you need to contact the website administrator and ask them to check whether the server configuration is correct.

Summary

When using PHP to write web pages and web applications, error codes are a common problem we need to face. The PHP 401 error code means that you need to provide verification credentials to access a specific page. This error usually indicates an invalid username or password, an expired session, or a server configuration issue. If you encounter this problem, try some solutions and contact the website administrator to resolve the issue.

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