PHP中的session不能跨页传递？一跨页就丢失，为空的！
如先浏览a.php文件，里边写入一个会话值。
再浏览b.php，得到a.php写入的会话值。为空！
为什么呢？在本地机器上测试非常正常。一上传服务器就完了。
PHPINFO的session信息
session.save_path D:/hosting/user/html/temp D:/hosting/user/html/temp
这个文件夹可读可写。
当浏览a.php页时，产生一个有大小的文件，也保存了会话值。
当浏览b.php页时，产生一个大小为0的文件。拿不到？什么原因？
sessionSession Support enabled Registered save handlers files user Registered serializer handlers php php_binary wddx Directive Local Value Master Value session.auto_start Off Off session.bug_compat_42 On On session.bug_compat_warn On On session.cache_expire 180 180 session.cache_limiter nocache nocache session.cookie_domain no value no value session.cookie_httponly Off Off session.cookie_lifetime 0 0 session.cookie_path / / session.cookie_secure Off Off session.entropy_file no value no value session.entropy_length 0 0 session.gc_divisor 100 100 session.gc_maxlifetime 1440 1440 session.gc_probability 1 1 session.hash_bits_per_character 4 4 session.hash_function 0 0 session.name PHPSESSID PHPSESSID session.referer_check no value no value session.save_handler files files session.save_path D:/hosting/user/html/temp session.serialize_handler php php session.use_cookies On On session.use_only_cookies Off Off session.use_trans_sid 1 1
a.php
<?phpsession_start();?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>session set</title></head><body><?php$_SESSION['session_value'] = 'value';var_dump($_SESSION);phpinfo();?></body></html>
这个文件正常，可以打印出会话值。
b.php
<?phpsession_start();?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>session get</title></head><body><?phpvar_dump($_SESSION);?></body></html>
这个什么也没有
回复讨论(解决方案)
var_dump($_SESSION['session_value']);
你服务器上也是这个？
session.save_path D:/hosting/user/html/temp
在你本地可能是能找到的,你服务器上有这个目录吗?
确实表示上面的代码没问题.本地可以测试.服务器暂时没测.可以考虑一下二楼的建议.
a与b有没有跨域呢？
你服务器上也是这个？
session.save_path D:/hosting/user/html/temp
在你本地可能是能找到的,你服务器上有这个目录吗?
在服务器我专门设置这个是万能文件夹，可写可一切一切的
var_dump($_SESSION['session_value']);
也是不行，都没有值……
什么原因？服务器是IIS。但不可能的呀，会这样，本地也虚拟了相同环境去测试，但还是这个样子，痛苦死我了
两个页我都session_id(1)之后就可以显示值了，但是这样多用户可不行了
浏览器的问题吧？
浏览器有什么问题？
我用IE6到IE9都是一个样……没变化。
session_id(SID);
session_start();
session_id(SID);
session_start();
SID是常量 ？
擦，你解决了吗，我今天刚遇到这个问题，搞了一天还是没能解决！
比较讨厌php这个session的问题。
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
Alipay PHP SDK transfer error: How to solve the problem of 'Cannot declare class SignData'?
Apr 01, 2025 am 07:21 AM
Alipay PHP...
Explain JSON Web Tokens (JWT) and their use case in PHP APIs.
Apr 05, 2025 am 12:04 AM
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,
How does session hijacking work and how can you mitigate it in PHP?
Apr 06, 2025 am 12:02 AM
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.
Describe the SOLID principles and how they apply to PHP development.
Apr 03, 2025 am 12:04 AM
The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.
How to debug CLI mode in PHPStorm?
Apr 01, 2025 pm 02:57 PM
How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...
Framework Security Features: Protecting against vulnerabilities.
Mar 28, 2025 pm 05:11 PM
Article discusses essential security features in frameworks to protect against vulnerabilities, including input validation, authentication, and regular updates.
How to automatically set permissions of unixsocket after system restart?
Mar 31, 2025 pm 11:54 PM
How to automatically set the permissions of unixsocket after the system restarts. Every time the system restarts, we need to execute the following command to modify the permissions of unixsocket: sudo...
What are Enumerations (Enums) in PHP 8.1?
Apr 03, 2025 am 12:05 AM
The enumeration function in PHP8.1 enhances the clarity and type safety of the code by defining named constants. 1) Enumerations can be integers, strings or objects, improving code readability and type safety. 2) Enumeration is based on class and supports object-oriented features such as traversal and reflection. 3) Enumeration can be used for comparison and assignment to ensure type safety. 4) Enumeration supports adding methods to implement complex logic. 5) Strict type checking and error handling can avoid common errors. 6) Enumeration reduces magic value and improves maintainability, but pay attention to performance optimization.
