How to use PHP to achieve website internationalization and localization?

How to use PHP to achieve website internationalization and localization?

With the trend of internationalization, more and more websites need to support users in multiple languages ​​and regions. In PHP development, we can use some technologies and tools to achieve website internationalization and localization. This article will introduce some practical methods and sample code.

1. Using language files

In PHP, we can store different language versions of text in different language files. Each language file contains a set of key-value pairs representing different text identifiers and corresponding translations. For example, we can create an English language file en.php and a Chinese language file zh.php.

en.php：

<?php
return [
    'welcome' => 'Welcome',
    'title' => 'Website Title',
];
?>

zh.php：

<?php
return [
    'welcome' => '欢迎',
    'title' => '网站标题',
];
?>

2. Set the default language

In the configuration file of the website, We can set the default language. This way, when the user does not specify a language or the language does not exist, the website will use the default language for display.

<?php
// 默认语言
$defaultLang = 'en';

// 根据用户的设置，选择合适的语言
$language = isset($_GET['lang']) ? $_GET['lang'] : '';
if ($language == '') {
    $language = $defaultLang;
}

// 加载对应语言文件
$texts = require_once($language . '.php');
?>

3. Page text translation

Where translation is required, we can display different text by getting the value of the corresponding key in the language file.

<?php
// 页面标题
echo $texts['title'];

// 欢迎语
echo $texts['welcome'];
?>

4. Multi-language links

In order to facilitate users to switch languages, we can add multi-language links to the pages of the website. When the user clicks on the link, we can change the language setting by modifying the URL parameters.

<a href="?lang=en">English</a>
<a href="?lang=zh">中文</a>

5. Localized date and time

When displaying date and time on a website, we can also localize it based on the user's regional preferences.

<?php
// 设置时区
date_default_timezone_set('Asia/Shanghai');

// 本地化日期和时间
echo date('Y-m-d H:i:s');
?>

In the above code, we set the time zone to "Asia/Shanghai", taking the current time as an example, the output date and time will be automatically localized.

Summary:
Through the above methods and sample codes, we can easily achieve internationalization and localization of the website. Using language files, we can easily manage text in different language versions. By setting the default language and multi-language links, users can freely switch the display language of the website. And using localized date and time, we can display appropriate time information based on the user's region. These technologies and tools will help us provide a better user experience for users around the world.

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