php 如何记住游客点击的是页面上的哪个链接 下次登陆了这个页面直接跳到那个链接
现在有个页面A
上面有两个链接 分别指向 网址 B 和 C
假设一个游客在A点击了网址B的链接
如何写代码 才能实现下次游客再登陆A的时候自动跳到B 谢谢了
回复讨论(解决方案)
数据库中记录uid和跳转链接的url。初始为空。
用户访问url时,记录用户和url。
每次登陆,判断数据库中对应用户的url,如果为空,不跳。
如果不空,跳到对应的url。
数据库中记录uid和跳转链接的url。初始为空。
用户访问url时,记录用户和url。
每次登陆,判断数据库中对应用户的url,如果为空,不跳。
如果不空,跳到对应的url。
额 如果不是注册用户呢 应该有办法在用户浏览器cookie里记录吧 到时候调用cookie之类的
那就往cookie里保存一个hash值,然后用hash值查询数据库,如果存在则跳转,没有则直接访问页面。
你的思路有问题!
如果这样做了,你的 A 页面不是就只能访问一次了吗?那么 A页面中的内容作了给谁看啊?
你的思路有问题!
如果这样做了,你的 A 页面不是就只能访问一次了吗?那么 A页面中的内容作了给谁看啊?
sf.net 选择下载镜像服务器就是这样的,选择了一次,以后都用那个选择的,直到cookies失效或重选
那就往cookie里保存一个hash值,然后用hash值查询数据库,如果存在则跳转,没有则直接访问页面。
额 我不太懂啊 能不能解释下hash值是什么啊 百度了下 好像和网页没什么关系 能大概写段代码给个例子吗 谢谢啦
hash和网页是没多大关系,只是为了生成非重复的唯一字符串,参见
http://www.php.net/manual/en/function.hash.php
echo hash(md5,strtotime('now').$_SERVER['REMOTE_ADDR']);
数据库
hash url
50b744170230a4cad75d4dc37bf9079e a.com/b.html

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

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

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.

In PHP, exception handling is achieved through the try, catch, finally, and throw keywords. 1) The try block surrounds the code that may throw exceptions; 2) The catch block handles exceptions; 3) Finally block ensures that the code is always executed; 4) throw is used to manually throw exceptions. These mechanisms help improve the robustness and maintainability of your code.

There are four main error types in PHP: 1.Notice: the slightest, will not interrupt the program, such as accessing undefined variables; 2. Warning: serious than Notice, will not terminate the program, such as containing no files; 3. FatalError: the most serious, will terminate the program, such as calling no function; 4. ParseError: syntax error, will prevent the program from being executed, such as forgetting to add the end tag.

In PHP, the difference between include, require, include_once, require_once is: 1) include generates a warning and continues to execute, 2) require generates a fatal error and stops execution, 3) include_once and require_once prevent repeated inclusions. The choice of these functions depends on the importance of the file and whether it is necessary to prevent duplicate inclusion. Rational use can improve the readability and maintainability of the code.

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 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

HTTP request methods include GET, POST, PUT and DELETE, which are used to obtain, submit, update and delete resources respectively. 1. The GET method is used to obtain resources and is suitable for read operations. 2. The POST method is used to submit data and is often used to create new resources. 3. The PUT method is used to update resources and is suitable for complete updates. 4. The DELETE method is used to delete resources and is suitable for deletion operations.
