PHP and Laravel integration enables multi-language application development

With the development of globalization, more and more applications need to support multiple languages ​​to meet the needs of users in different regions and cultures. In the development of web applications, PHP is a commonly used language, and Laravel is a very popular framework in PHP. This article will introduce how to use PHP and Laravel integration to achieve multi-language application development.

1. Why multi-language support is needed

In the context of globalization, an application that only supports a single language will limit the scope of its user group. For example, English is a universal language, but for users who do not understand English, using English applications may cause inconvenience or difficulty; in addition, the language used by users in some countries or regions may be other languages. If an application Only English is supported, so this group of users will not be able to use the application.

In order to meet the needs of users in different languages, it is necessary to develop applications with multi-language support. In web applications, multi-language is usually implemented by preparing multiple translation files on the front end, and then loading the corresponding translation files according to the user's language preference to achieve multi-language display. In PHP programs, you can use multiple methods to implement multi-language, such as using GET or POST requests, using URL parameters, etc.

2. How to achieve multi-language

If you use native PHP to develop applications, you need to consider how to handle the translation of each page to achieve multi-language. The Laravel framework has built-in multi-language support, and using Laravel can easily implement multi-language.

1. Configuration file

In Laravel, a configuration file is a file that stores application configuration. A lang.php file can be created under the config folder with translations for various languages ​​as follows:

<?php

return [
    'welcome' => '欢迎',
    'hello' => '你好',
    'learn' => '学习',
    'laravel' => 'Laravel'
];

2. routing

In Laravel, routing It is the mapping relationship between URL and application logic. The language used can be specified using middleware or request parameters in the route. For example:

Route::get('/welcome/{locale}', function ($locale) {
    App::setLocale($locale);
    return view('welcome');
});

where {locale} is a request parameter used to pass the language selected by the user. App::setLocale($locale) is used to set the selected language to the current language of the application.

3. View

In Laravel, views are used to display the application interface. If you need to display multilingual content in the view, you can use the language pack feature provided by Laravel. For example:

{{ __('lang.welcome') }}

The __ method is used to call the translation in the language package, and lang.welcome is the key corresponding to welcome in the translation file. After calling the __ method, the corresponding translation will be automatically loaded according to the language of the current application. If you need to change the language, you can use the App::setLocale method.

3. Example Demonstration

Below we use an example to demonstrate how to implement multi-language in Laravel.

1. Create a Laravel application

First you need to create a Laravel application. You can use the composer create-project command to create a new Laravel application. For example:

composer create-project --prefer-dist laravel/laravel multilingualapp

2. Configuration language

Open the config/app.php file and add the languages ​​that need to be supported in the locales array, for example:

'locales' => ['en', 'es', 'fr'],

3. Create translation files

Create corresponding translation files for each language in the resources/lang directory, for example:

• resources/lang/en/messages. php
• resources/lang/es/messages.php
• resources/lang/fr/messages.php

You can add the corresponding language in each file Translate, for example:

<?php
// resources/lang/en/messages.php
return [
    'welcome' => 'Welcome to our multilingual app!',
    'about_us' => 'About Us'
];

4. Create multi-language routing

Open the routes/web.php file and create a multi-language route, for example:

Route::get('/{locale}', function ($locale) {
    App::setLocale($locale);
    return view('welcome');
});

Route::get('/{locale}/about', function ($locale) {
    App::setLocale($locale);
    return view('about');
});

5. Create a multilingual view

Create a multilingual view in the resources/views directory, for example:

• resources/views/welcome.blade.php
• resources/views/about.blade.php

You can call multi-language translation through the Laravel language package in the view, for example:

<h1>{{ __('messages.welcome') }}</h1>
<a href="{{ url('/'.app()->getLocale().'/about') }}">{{ __('messages.about_us') }}</a>

After running the application, add it in the URL Different language codes can achieve multi-language display.

4. Summary

In this article, we introduced how to use PHP and Laravel integration to achieve multi-language application development. Laravel provides built-in multilingual support to easily handle multilingual issues in configuration files, routes, and views. By using Laravel, you can quickly develop multi-language supported web applications to meet the needs of users in different languages.

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