Development suggestions: How to use the ThinkPHP framework to achieve multi-language support

With the popularity of the Internet, more and more websites and applications require multi-language support. In the process of using the PHP language, the ThinkPHP framework provides some very useful methods to achieve multi-language support. In this article, we will share some practical development suggestions to help you achieve multi-language support when using the ThinkPHP framework.

Step one: Configure a multi-language environment

Before using the ThinkPHP framework to achieve multi-language support, we need to configure a multi-language environment first. First, create a lang directory in the application directory to store translation files in different languages. Then, set the default language in the application/config.php configuration file, as follows:

return [
    // 默认语言
    'default_lang' => 'zh-cn',
    // ...
];

In addition to configuring the default language, we can also configure all supported language options and set request parameters or cookies. Dynamically change the current language, as follows:

return [
    // 所有支持的语言选项
    'lang_list' => [
        'zh-cn' => '简体中文',
        'en-us' => 'English',
        // ...
    ],

    // 根据参数变量切换语言
    'lang_switch_on_param'  => true,
    'lang_switch_param'     => 'lang',

    // 根据cookie变量切换语言
    'lang_switch_on_cookie' => true,
    'lang_switch_cookie'    => 'lang',
    'lang_switch_cookie_expire' => 86400 * 30, // cookie有效期
];

In the above configuration, we have defined all supported language options, as well as settings for dynamically switching languages ​​through parameters or cookies.

Step 2: Create translation files

After configuring a multi-language environment, we need to create translation files in different languages. The translation file exists in the lang directory in the form of a .php file and is named after the language code, such as: zh-cn.php, en-us.php, etc. The content in the translation file is an array. The key of the array is the string that needs to be translated. The value of the array is the translation content of the corresponding language, as follows:

return [
    'hello' => '你好',
    'world' => '世界',
    // ...
];

In the above translation file, the hello and world strings are processed Chinese translation is selected, and the default language is Chinese. If you need to configure translation in other languages, you only need to translate in the translation file of the corresponding language.

Step 3: Implement multi-language support

With the above configuration and translation files, we can implement multi-language support in the ThinkPHP framework application. The following are two methods to achieve multi-language support:

1. Use system functions

The ThinkPHP framework provides a very convenient system function for translating strings. Just add L('') in front of the string that needs to be translated. For example:

echo L('hello'); // 输出：你好
echo L('world'); // 输出：世界

where hello and world are keys in the translation file. The system function will automatically load the corresponding translation content based on the current language and return the translated string.

2. Use assistant functions

In addition to system functions, we can also use the assistant function lang() to translate strings. Of course, you need to introduce the helper function library of the ThinkPHP framework before use.

use thinkacadeLang;

echo Lang::get('hello'); // 输出：你好
echo Lang::get('world'); // 输出：世界

In the above code, we use the Lang::get() method to obtain the translated string.

Summary

It is very simple to use the ThinkPHP framework to achieve multi-language support. You only need to configure a multi-language environment, create a translation file, and then use system functions or helper functions to easily achieve multi-language support. During the development process, in order to facilitate maintenance and expansion, it is recommended to separate translation files in different languages ​​to facilitate later updates and maintenance.

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