Table of Contents
回复讨论(解决方案)

统一编码

Jun 23, 2016 pm 02:39 PM

1.目前处理的文件类型有两种 txt html
2.文件的编码未知 要读取文件内容 内容编码最后统一转换成utf-8 最终入库

目前想用mb_convert_encoding($file_content,'utf-8',"auto"); 好像不行 求大神赐教!帮忙分析下(txt的复杂点)  


回复讨论(解决方案)

用 mb_convert_encoding 大多不能得到正确的判断
所以 mb_string 扩展有了一个新成员 mb_check_encoding 
这个函数可以准确的判定来源是否为指定的字符集
只不过你需要写代码来枚举可能的字符集:
if(mb_check_encoding($s, 'utf-8')) ....
elseif(mb_check_encoding($s, 'gbk')) ....
elseif(mb_check_encoding($s, 'big5')) ....
else ....

用 mb_convert_encoding 大多不能得到正确的判断
所以 mb_string 扩展有了一个新成员 mb_check_encoding 
这个函数可以准确的判定来源是否为指定的字符集
只不过你需要写代码来枚举可能的字符集:
if(mb_check_encoding($s, 'utf-8')) ....
elseif(mb_check_encoding($s, 'gbk')) ....
elseif(mb_check_encoding($s, 'big5')) ....
else ....
有用,前几天,写了个读取csv格式的数据,一度在纠结由txt转换csv格式的编码问题....

用 mb_convert_encoding 大多不能得到正确的判断
所以 mb_string 扩展有了一个新成员 mb_check_encoding 
这个函数可以准确的判定来源是否为指定的字符集
只不过你需要写代码来枚举可能的字符集:
if(mb_check_encoding($s, 'utf-8')) ....
elseif(mb_check_encoding($s, 'gbk')) ....
elseif(mb_check_encoding($s, 'big5')) ....
else ....

	if(mb_convert_encoding($file_content,'ASCII')){				mb_convert_encoding($file_content,'UTF-8',"ASCII");			}elseif(mb_convert_encoding($file_content,'GB2312')){				mb_convert_encoding($file_content,'UTF-8',"GB2312");			}elseif(mb_convert_encoding($file_content,'GBK')){				mb_convert_encoding($file_content,'UTF-8',"GBK");			}elseif(mb_convert_encoding($file_content,'BIG5')){				mb_convert_encoding($file_content,'UTF-8',"BIG5");			}else{				mb_convert_encoding($file_content,'UTF-8',"auto");			}
Copy after login

还有有乱码
http://fashionistess.com/awr1/1.php

不明白你给出的连接反映的是什么

既然你已经发现 mb_convert_encoding 不准确了,那么你为什么还在用呢?

$file_content = '待转码的内容';$charset = '';if(mb_check_encoding($file_content, 'utf-8')) $charset = ''; //已是 utf-8 了无需转码elseif(mb_check_encoding($file_content, 'big5')) $charset = 'big5'; //big5 的码值范围小于 gbk,应先判断elseif(mb_check_encoding($file_content, 'gbk')) $charset = 'gbk'; //gb2312 是 gbk 的子集,只判 gbk 就可以了if($charset)  $file_content = mb_convert_encoding($file_content, 'utf-8', $charset);
Copy after login
Copy after login


不明白你给出的连接反映的是什么

既然你已经发现 mb_convert_encoding 不准确了,那么你为什么还在用呢?

$file_content = '待转码的内容';$charset = '';if(mb_check_encoding($file_content, 'utf-8')) $charset = ''; //已是 utf-8 了无需转码elseif(mb_check_encoding($file_content, 'big5')) $charset = 'big5'; //big5 的码值范围小于 gbk,应先判断elseif(mb_check_encoding($file_content, 'gbk')) $charset = 'gbk'; //gb2312 是 gbk 的子集,只判 gbk 就可以了if($charset)  $file_content = mb_convert_encoding($file_content, 'utf-8', $charset);
Copy after login
Copy after login

不好意思 刚才代码写错了  
链接是测试结果 编码问题会影响解析的结果(以前只分析linux下生成的文件所以一直没发现这个问题) 谢谢 问题已经解决啦

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)

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 does session hijacking work and how can you mitigate it in PHP? How does session hijacking work and how can you mitigate it in PHP? Apr 06, 2025 am 12:02 AM

Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.

What are Enumerations (Enums) in PHP 8.1? What are Enumerations (Enums) in PHP 8.1? Apr 03, 2025 am 12:05 AM

The enumeration function in PHP8.1 enhances the clarity and type safety of the code by defining named constants. 1) Enumerations can be integers, strings or objects, improving code readability and type safety. 2) Enumeration is based on class and supports object-oriented features such as traversal and reflection. 3) Enumeration can be used for comparison and assignment to ensure type safety. 4) Enumeration supports adding methods to implement complex logic. 5) Strict type checking and error handling can avoid common errors. 6) Enumeration reduces magic value and improves maintainability, but pay attention to performance optimization.

Describe the SOLID principles and how they apply to PHP development. 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 debug CLI mode in PHPStorm? How to debug CLI mode in PHPStorm? Apr 01, 2025 pm 02:57 PM

How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...

How to send a POST request containing JSON data using PHP's cURL library? 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�...

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.

See all articles