How to implement Chinese and English character conversion function in php

In the process of developing and maintaining PHP websites, we often need to convert Chinese and English characters. Some common scenarios include: converting Chinese URLs to English URLs, converting Chinese characters to Pinyin, converting Chinese punctuation marks to English punctuation marks, etc. These Chinese and English character conversions can improve the friendliness and readability of the website to a certain extent. So, how to achieve Chinese and English character conversion in PHP?

1. Convert Chinese to Pinyin

If you need to convert Chinese characters to Pinyin, you can use the PHP extension library pinyin to achieve this. The pinyin library can convert Chinese strings into pinyin strings including initials, finals, pinyin, tones and other parts with high accuracy. Before using the pinyin library, you need to ensure that the intl extension has been installed and enabled. The following is a simple example:

//使用composer安装pinyin库
composer require overtrue/pinyin

//使用示例
use Overtrue\Pinyin\Pinyin;

$pinyin = new Pinyin();
$result = $pinyin->convert('你好'); // ['ni', 'hao'];

2. Convert Chinese URL to English URL

When making an SEO-friendly URL, you need to convert the Chinese URL to English URL. There are two main conversion methods: urlencode and iconv functions.

The urlencode function can convert Chinese into a URL-recognizable encoding. For example, "I am Chinese" represents the URL encoding of "I am Chinese". The usage method is as follows:

$url = urlencode("我是中国人");
//结果："%E6%88%91%E6%98%AF%E4%B8%AD%E5%9B%BD%E4%BA%BA"

iconv function can convert Chinese strings into a custom character set. For example, we convert Chinese strings into hexadecimal ASCII codes:

$str = "我是中国人";
$str_ascii = iconv("UTF-8", "ASCII//TRANSLIT", $str);
//结果："WoShiZhongGuoRen"

3. Convert Chinese punctuation marks to English punctuation marks

In mixed Chinese and English texts, Chinese punctuation marks Mixed in with English punctuation marks can make the text difficult to read. Therefore, we need to convert Chinese punctuation marks into English punctuation marks. You can use the str_replace function to perform replacement operations. Examples are as follows:

$cn_punctuations = ['，', '。', '；', '：', '”', '“'];
$en_punctuations = [',', '.', ';', ':', '"', '"'];

$str = "这是中文标点：，。；：“”";
$str = str_replace($cn_punctuations, $en_punctuations, $str);
//结果："这是中文标点:,.;:""

Summary:

It is not difficult to convert Chinese and English characters in PHP. We can use some common PHP functions and extension libraries, such as urlencode, iconv, str_replace and pinyin library. However, different conversion scenarios require different conversion methods, and you need to choose the most suitable method according to the actual situation. In addition, there are other conversion techniques and implementation methods that require continuous exploration and accumulation in practice.

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