Internationalization support in Yii framework

Yii is an open source web application framework that adopts an efficient MVC architecture design, making code separation clear and easy to maintain. As a web application framework, international support is essential. The Yii framework provides a variety of ways to implement internationalization, which this article will introduce.

1. Use the Yii::t function that comes with Yii

The Yii::t function is the translation function that comes with the Yii framework. Its usage is as follows:

Yii::t('app', 'Welcome to my site!');

Among them, 'app' refers to the language category, and 'Welcome to my site!' is the translated language. The advantage of this is that the Yii::t function will automatically search for language pack files. If the corresponding language file is found, it will be translated into the corresponding language, otherwise the original text will be returned.

The language package path of the Yii::t function is @app/messages/language/app.php. For example, to translate into Chinese, the corresponding language pack file path is @app/messages/zh-CN/app.php.

In the Yii framework, you can set support for different languages ​​through configuration files. Add in the main.php configuration file:

'language' => 'zh-CN',  // 默认语言是中文

When used in the Yii::t function, translated texts in different languages ​​will be automatically loaded, which makes the internationalization support of the website more convenient and controllable.

2. Use Gettext extension

Gettext is a universal internationalization solution that embeds special comments in the code and automatically switches when the program is running. Language pack to achieve translation effect.

The Yii framework provides a Gettext extension that can easily implement internationalization support. This extension requires Gettext support to be loaded in PHP. In Linux systems, the Gettext function is usually already built-in and only needs to be installed manually in other operating systems.

The advantage of using the Gettext extension is that when adding new translated text to the original language package, you only need to add new entries in the .po file, and the Yii framework will automatically update it. This method requires compiling the .po file first, generating the .mo file, and then using it in the program.

3. Using third-party extensions

In addition to Yii's own translation function and Gettext extension, there are also some third-party extensions that can achieve internationalization. For example, the zacksleo/yii2-i18n-helper solution provides a concise way of translating to easily implement internationalization support in the Yii framework.

In addition, there is an extension called Intl, which can provide more advanced internationalization functions, including date formatting, currency conversion and other functions. However, it should be reminded that since the Intl extension depends on the ICU library, it may need to be compiled separately after installation, so you need to choose and install it carefully.

To sum up, the Yii framework provides a variety of ways to achieve internationalization, including using the Yii::t function, Gettext extension, third-party extension and Intl extension, etc. Using these methods, you can easily implement international support for the website and provide users with a more friendly interface and communication environment.

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