php数组编码转换示例详解
因为一些特殊字符的显示效果的原因不得不把习惯的utf-8工程改成了GBK,由于使用了ajax技术,又涉及到了老问题——编码转换。一些表单验证需要返回json数据,php的json_encode函数只支持utf-8编码,无奈只得iconv了,需要达到的效果是GBK数组转换成utf-8数组传给json_encode函数。
最开始的思路,将数组序列化后用iconv函数转换编码,之后再反序列化,代码如下:
复制代码 代码如下:
unserialize(iconv('gbk','utf-8',serialize($array)));
得到的结果是空白,后来想起来配置文件里设置了默认编码 ini_set('default_charset', 'gbk'); 这样用gbk反序列化utf-8的字符串肯定不好用了,此处在序列化和反序列化之间加个ini_set('default_charset', 'utf-8'); 应该也是可以的,但这么弄总觉得有点别扭,因为是全局的编码设置,很容易导致其他地方的编码问题,比如数据库操作。那么换个思路,用构建数组原型的序列化方法,借助var_export函数,最终函数如下:
复制代码 代码如下:
function array_iconv($in_charset,$out_charset,$arr){
return eval('return '.iconv($in_charset,$out_charset,var_export($arr,true).';'));
}
原理很简单 var_export设置第二个参数为true,返回数组原型字符串,将字符串转换为utf-8编码,之后再用eval来执行返回(类似匿名函数?),至此完美解决问题。
后续:后来在网上搜了下资料,看有没有更好的方法,找到的都大同小异,都是利用递归调用iconv的方式,如果数组元素过多或者维数多一些,性能上肯定不怎么样了,更好的是原生代码的方式,不需要考虑是N维数组还是关联数组,一切都已经自动完成,保证数组转换前后数据一致。从代码的长短以及循环和原生方法的比较上,相信大家已经有了选择。

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

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

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

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,

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

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.

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

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.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.
