Home php教程 php手册 利用PHP删除特殊符号

利用PHP删除特殊符号

Jun 06, 2016 pm 08:09 PM
php Who are you delete use special symbols programming

在编程的时候,不管你是偏向PHP等较为简单的编程,还是说想Java等更需要逻辑的强类型语言编程,都会或多或少地接触到对特殊符号的处理。特殊符号虽然显得不怎么起眼,但却极有可能会让程序实现不了初衷的目的运行效果。我们最常见到的无非就是Bom了。Bom是字

在编程的时候,不管你是偏向PHP等较为简单的编程,还是说想Java等更需要逻辑的强类型语言编程,都会或多或少地接触到对特殊符号的处理。特殊符号虽然显得不怎么起眼,但却极有可能会让程序实现不了初衷的目的运行效果。我们最常见到的无非就是Bom了。Bom是字节顺序标记,它是插入到以UTF-8、UTF16或UTF-32编码Unicode文件开头的特殊标记,用来识别Unicode文件的编码类型。很多编辑器在保存文件的时候都会默认写入或者保存这一些我们看不到的bom,而前后时候不同的编码格式写程序,也很容易出现bom的问题。下面,我们来看看,PHP下面,怎么去删除bom等特殊符号。

<?php ??
function?delete_special_mark($str){ ??
//去除字符串?首尾?空白等特殊符号或指定字符序列 ??
$str?=?trim($str);? ??
//去掉?HTML、XML?以及?PHP?的标签 ??
$str?=?strip_tags($str,"");? ??
//去掉TAB切换产生的符号 ??
$str?=?ereg_replace("\t","",$str);? ??
//去掉换行?通常是两个enter造成 ??
$str?=?ereg_replace("\r\n","",$str);? ??
//去掉enter换行 ??
$str?=?ereg_replace("\r","",$str); ??
//去掉换行? ??
$str?=?ereg_replace("\n","",$str);? ??
//去掉空白 ??
$str?=?ereg_replace("?","?",$str);? ??
//处理从数据库或?HTML?表单中取回数据包含的特殊符号 ??
$str?=?stripslashes($str); ??
//删除bom标记 ??
$str=?preg_replace(?'/^(\xef\xbb\xbf)/',?'',?$str); ??
return?$str; ??
} ??
?>??
Copy after login

如果你对处理特殊符号有更好的方法,欢迎与我交流!!

声明: 本文采用 BY-NC-SA 协议进行授权 | IT路人
转载请注明转自《利用PHP删除特殊符号》

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

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 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.

Problem-Solving with Python: Unlock Powerful Solutions as a Beginner Coder Problem-Solving with Python: Unlock Powerful Solutions as a Beginner Coder Oct 11, 2024 pm 08:58 PM

Pythonempowersbeginnersinproblem-solving.Itsuser-friendlysyntax,extensivelibrary,andfeaturessuchasvariables,conditionalstatements,andloopsenableefficientcodedevelopment.Frommanagingdatatocontrollingprogramflowandperformingrepetitivetasks,Pythonprovid

See all articles