Table of Contents
回复讨论(解决方案)
Home Backend Development PHP Tutorial cookie的有效期,不能正常执行,请高手看一下

cookie的有效期,不能正常执行,请高手看一下

Jun 23, 2016 pm 01:26 PM

文件目录结构   登陆界面与主文件在根目录,其它文件在 main文件夹中,
$name="张三";
setcookie("F_user",$name,,time()+900);

print_r($_COOKIE);  可以正常得到 F_user>张三

但运行中,发现不到900秒就退出了。

后来百度 查到 应该cookie中加上路径 ,于是改为

setcookie("F_user",$name,,time()+900,"/");

可这样以来,print_r($_COOKIE); 得到 F_user> 空, 根本得不到cookie值,导致无法登陆

请问是哪里的问题,该如何处理?


回复讨论(解决方案)

setcookie 的第三个参数为失效期,用于通知浏览器在再次访问该网站时是否传递相关的 cookie 变量

你的 setcookie("F_user",$name,,time()+900); 显然是错误的
不可能通过语法检查,自然也不会有正确的表现
你连关键的代码都隐藏了,所以不好说什么

setcookie 的第三个参数为失效期,用于通知浏览器在再次访问该网站时是否传递相关的 cookie 变量

你的 setcookie("F_user",$name,,time()+900); 显然是错误的
不可能通过语法检查,自然也不会有正确的表现
你连关键的代码都隐藏了,所以不好说什么



是手误,其实是: setcookie("F_user",$name,time()+900);   可以正常登陆并执行

setcookie("F_user",$name,time()+900,"/");

可这样以来,print_r($_COOKIE); 得到 F_user> 空, 根本得不到cookie值,导致无法登陆

查看下浏览器的cookie选项里有没有F_user

查看下浏览器的cookie选项里有没有F_user


var_dump($_COOKIE);的结果如下:
 ["F_user"]=> string(0) "" 

浏览器的结果是这样:

你试下这样setcookie("F_user",$name,time()+900);

刚才,发现出现了两个F_user, 一个是根目录下的


一个是我程序文件夹下的
所有程序都是在这个文件夹下,但不知道为什么会出现这个F_user

我测试没有问题

已经查到原因,就是用的浏览器cookie查看方法

你先 setcookie("F_user",$name,time()+900);
再 setcookie("F_user",$name,time()+900,"/");
由于作用域不同,自然就是两个 F_user 了

这两个 F_user 传到 php 时,并没有路径的约束
按 php 的约定,数组的同名键是后来的覆盖先到的
结果就是你遇到的情况了

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

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1665
14
PHP Tutorial
1270
29
C# Tutorial
1250
24
Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Explain secure password hashing in PHP (e.g., password_hash, password_verify). Why not use MD5 or SHA1? Apr 17, 2025 am 12:06 AM

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values ​​to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

How does PHP type hinting work, including scalar types, return types, union types, and nullable types? How does PHP type hinting work, including scalar types, return types, union types, and nullable types? Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values ​​and handle functions that may return null values.

PHP and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP vs. Other Languages: A Comparison PHP vs. Other Languages: A Comparison Apr 13, 2025 am 12:19 AM

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

See all articles