Table of Contents
回复内容:
Home Backend Development PHP Tutorial 表单问题 真心弄懵了

表单问题 真心弄懵了

Jun 06, 2016 pm 08:20 PM
php

就是寻常的表单提交 如下两个文件

form.php 中的表单:

<code><form method="post" action="echo.php">
    <input type="text" name="username"><br>
    <input type="submit" value="提交">
</form></code>
Copy after login
Copy after login

echo.php 中输出:

echo $_POST['username'];

<code>为何报一直报这个提示:
Notice: Undefined index: username in /Applications/XAMPP/xamppfiles/htdocs/form/echo.php on line 8</code>
Copy after login
Copy after login

难道表单不是这么写的么 这么简单 实在是想不通。。。。。???
还用我使用的是XAMMP 加PhpStorm 难道跟工具有关??
百度了很多 都是加个判断

<code>if(isset($_POST['username'])){
    echo $_POST['username'];
}</code>
Copy after login
Copy after login

这样肯定没Notice 但输出数据一样没有的。。

回复内容:

就是寻常的表单提交 如下两个文件

form.php 中的表单:

<code><form method="post" action="echo.php">
    <input type="text" name="username"><br>
    <input type="submit" value="提交">
</form></code>
Copy after login
Copy after login

echo.php 中输出:

echo $_POST['username'];

<code>为何报一直报这个提示:
Notice: Undefined index: username in /Applications/XAMPP/xamppfiles/htdocs/form/echo.php on line 8</code>
Copy after login
Copy after login

难道表单不是这么写的么 这么简单 实在是想不通。。。。。???
还用我使用的是XAMMP 加PhpStorm 难道跟工具有关??
百度了很多 都是加个判断

<code>if(isset($_POST['username'])){
    echo $_POST['username'];
}</code>
Copy after login
Copy after login

这样肯定没Notice 但输出数据一样没有的。。

设置一下 FORM 的 enctype 属性

http://www.w3school.com.cn/tags/att_form_enctype.asp

username换成其他的单词试试

你确定接受的php脚本是echo.php?

代码没问题,我跑了一遍,是可以的,初步猜测,可能的原因就是php的配置问题,你多塞几个input,在接收页面打印$_POST,估计post都接收不到,再改用get试下

直接先打印$_POST,看看接收的变量有哪些

感谢大家的回答,问题已经解决了 是我访问路径的问题 我访问到了localhost:63342/ 这个端口 访问了phpStorm中的web server 所有没用获取到数据 而我自己也开了Apache WebServer
只要把路径改成http://localhost/form/form.php即可。可能kumfo已经发现了问题所在 但我不知道怎么发文件结构 所有给他带来了困扰 。

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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

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)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. 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,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles