表单$_post[]的有关问题
表单$_post[]的问题
表单action指向本身所在页面
提交按钮
下面有一个判断 if($_Get['search'])
如果有值，说明点击了查询按钮，执行啥啥操作
如果没有值，仅仅显示本页面静态部分。
5.3可以运行
使用PHP5.5之后却无法显示该网页
请问解决办法吧。这是怎么回事？所有代码都需要重写?
------解决思路----------------------
$_GET[search]
不加引号。PHP首先会查找search常量，找不到所以就报错了。
如果不想改代码，可以在首行加上：error_reporting(E_ALL & ~E_NOTICE); 这句，就可以将notice错误报告屏蔽掉。
------解决思路----------------------
你可以把错误调试打开，如果是网页无法显示，应该是哪里有问题。
------解决思路----------------------
加引號這個是標準寫法。
為什麼不按標準呢。。
------解决思路----------------------
出现这个错误提示的原因，PHP会把没有引号引起来的键名当作是常量去获取, 当找不到的时候, 抛出一个NOTICE, 然后再根据“常量名”生成一个字符串, 然后再讲这个字符串做为键名继续~
可以設置error_reporting(E_ALL & ~E_NOTICE); 來屏蔽錯誤顯示。但最好還是加引號，這樣不需要在將常量轉字符去獲取多次，提高效率。
------解决思路----------------------
这与 php 版本无关，但与 php 环境设置有关
当然，随着 php 版本的升级，你受到的约束也在升级
if($_Get['search']) 将可能会产生一个 E_NOTICE 级别的错误信息
如果你没有打开错误显示，或将错误信息重定向到日志
那么由于错误信息没有出路，导致一个 HTTP 500 状态（服务器拒绝响应）
虽然屏蔽掉 E_NOTICE 级别错误检查，可以回避掉这个毛病
但隐患终究是存在的，程序是不健壮的
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
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
1386
52
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
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
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
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 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
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::).
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?
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.
