请教同一个文件中php如何获取html的变量值?
代码如下：
<html> <head> <title>配置器</title> </head> <body> <br> 请设置您要修改的属性：<br> <form> <table width="220" height="10" border="0" cellpadding="1" cellspacing="1"> <tr> <td align="center">金币: </td> <td align="center"><input name=jb type=TEXT value="555"></td> </tr><tr> <td align="center">经验：</td> <td align="center"><input name=jy type="TEXT" value="444" /></td> </tr><tr> <td align="center">道具：</td> <td align="center"><input name=dj type="TEXT" value="333" /></td> </tr> <input type=SUBMIT value="测试"> </table> </form> </body> <?php echo "</br>test connect.</br>"; echo ($jb); echo ($jb); echo ($jy); ?></html>
在浏览器打开这个index.php页面后 显示错误
Notice: Undefined variable: jb in C:\Program Files (x86)\EasyPHP-DevServer-14.1VC11\data\localweb\command.php on line 32
Notice: Undefined variable: jb in C:\Program Files (x86)\EasyPHP-DevServer-14.1VC11\data\localweb\command.php on line 33
Notice: Undefined variable: jy in C:\Program Files (x86)\EasyPHP-DevServer-14.1VC11\data\localweb\command.php on line 34
我该如何在php代码中获取html的变量值了？
回复讨论(解决方案)
这个恐怕要用 js 来获取吧，你这个值是动态的，要么就是ajax传到后台php页面
这个恐怕要用 js 来获取吧，你这个值是动态的，要么就是ajax传到后台php页面
我是在《php高级编程》第50页看到的，用php获取html变量的值是可以的！但是为什么会提示未定义的变量了？
你的这个代码早就过时了，是 php4 的早期代码
为了在 php 5.3 以前正确执行，需要有以下设置
register_globals = on
error_reporting = E_ALL & ~E_NOTICE
php5.4 开始取消了 register_globals 开关，你的代码不修改是不能正确运行的
如果你不想修改 php.ini 文件，也不想改动原有的代码
那么至少需要在程序的开始处，加上以下代码
error_reporting(E_ALL ^ E_NOTICE);extract($_GET);
php5.4 开始取消了 register_globals 开关，你的代码不修改是不能正确运行的
如果你不想修改 php.ini 文件，也不想改动原有的代码
那么至少需要在程序的开始处，加上以下代码
error_reporting(E_ALL ^ E_NOTICE);extract($_GET);
加上这两行代码后，不报错了，但是 echo ($jb);为什么什么都没有输出了？有其他方法获取html的变量吗？
你没有提交（点击 测试 按钮）是不会有数据的
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
AI Hentai Generator
Generate AI Hentai for free.
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
1385
52
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,
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 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...
Explain the concept of late static binding in PHP.
Mar 21, 2025 pm 01:33 PM
Article discusses late static binding (LSB) in PHP, introduced in PHP 5.3, allowing runtime resolution of static method calls for more flexible inheritance.Main issue: LSB vs. traditional polymorphism; LSB's practical applications and potential perfo
How to send a POST request containing JSON data using PHP's cURL library?
Apr 01, 2025 pm 03:12 PM
Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...
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.
Customizing/Extending Frameworks: How to add custom functionality.
Mar 28, 2025 pm 05:12 PM
The article discusses adding custom functionality to frameworks, focusing on understanding architecture, identifying extension points, and best practices for integration and debugging.
