Table of Contents
1.htmlentities()函数:
2.html_entity_decode()函数
Home Backend Development PHP Problem How to solve php html tag conversion problem

How to solve php html tag conversion problem

Aug 13, 2020 am 09:29 AM
html php

php html标签转换问题的解决办法:1、使用“htmlentities()”函数将html标签转换成特殊字符;2、使用“html_entity_decode()”函数将htmlentities函数转义过的字符串转成html标签。

How to solve php html tag conversion problem

推荐:《PHP视频教程

 很多朋友在写php的时候,难免会遇到需要将html标签进行转义存储。比如存入数据库、xml文件等。而存储进去后,读取出来则需要转换成html输出。网上有许多人编写的转换函数,很长很难懂。其实php早就自带有这样的函数。大可不必自己编写。

下面分别介绍这两个函数。

1.htmlentities()函数:

说明:将html标签转换成特殊字符。例如将<script>转换成"&lt;script&gt;"</p> <p>例子:</p> <p><strong>[PHP]</strong> view plaincopy</p> <ol style="margin-left:45px;"> <li><span style="color:#000000;"><span style="color:#008200;">// An imaginary article submission from a bad user</span>  </span></li> <li> </li> <li><span style="color:#000000;"><span style="color:#008200;">//  it will redirect anyone to example.com if the code is run in a browser</span>  </span></li> <li> </li> <li><span style="color:#000000;"><span style="color:#dd0000;">$userInput</span> = "I am going to hax0r your site, hahaha!  </span></li> <li> </li> <li><span style="color:#000000;">    <script type=&apos;text/javascript&apos;>  </span></li> <li> </li> <li><span style="color:#000000;">    window.location = &apos;http:<span style="color:#008200;">//www.example.com/&apos;</span>  </span></li> <li> </li> <li><span style="color:#000000;">    </script>'";  

  •       
  • //Lets make it safer before we use it  
  • $userInputEntities = htmlentities($userInput);  
  •   
  • //Now we can display it  
  • echo $userInputEntities;  
  • 由于最近csdn的控件比较垃圾,请将上面的$apos改成单引号。---呼!

    上面的语句执行后,将生成下面的结果

    [HTML] view plaincopy

    1. I am going to hax0r your site, hahaha!  
    2.     <script type='text/javascript'>  
    3.     window.location = 'http://www.88web.org/'  
    4.     script>'  

    2.html_entity_decode()函数

    说明:将htmlentities()函数转义过的字符串转成html标签。

    例子:

    [PHP] view plaincopy

    1. $orig = "I'll /"walk/" the dog now";  
    2.   
    3. $a = htmlentities($orig);  
    4.   
    5. $b = html_entity_decode($a);  
    6.   
    7. echo $a// I will "walk" the dog now  
    8.   
    9. echo $b// I will "walk" the dog now  
    10.  

    转载自页面     http://www.cankaojishu.com/bcyy/82144.html

    The above is the detailed content of How to solve php html tag conversion problem. For more information, please follow other related articles on the PHP Chinese website!

    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

    Video Face Swap

    Video Face Swap

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

    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

    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,

    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

    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.

    The Roles of HTML, CSS, and JavaScript: Core Responsibilities The Roles of HTML, CSS, and JavaScript: Core Responsibilities Apr 08, 2025 pm 07:05 PM

    HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.

    See all articles