多语言支持（Multi-lingual Support） · Phalcon中文教程

# 多语言支持（Multi-lingual Support）[](# "永久链接至标题") The component [*Phalcon\Translate*](#) aids in creating multilingual applications.Applications using this component, display content in different languages, based on the user's chosen language supported by the application. ### 适配器（Adapters）[](# "永久链接至标题") This component makes use of adapters to read translation messages from different sources in a unified way. | Adapter | Description | |-----|-----| | NativeArray | Uses PHP arrays to store the messages. This is the best option in terms of performance. | ### 组件的使用（Component Usage）[](# "永久链接至标题") Translation strings are stored in files. The structure of these files could vary depending of the adapter used. Phalcon gives you the freedomto organize your translation strings. A simple structure could be: ~~~ app/messages/en.php app/messages/es.php app/messages/fr.php app/messages/zh.php ~~~ Each file contains an array of the translations in a key/value manner. For each translation file, keys are unique. The same array is used indifferent files, where keys remain the same and values contain the translated strings depending on each language. ~~~ <?php // app/messages/es.php $messages = array( "hi" => "Hello", "bye" => "Good Bye", "hi-name" => "Hello %name%", "song" => "This song is %song%" ); ~~~ ~~~ <?php // app/messages/fr.php $messages = array( "hi" => "Bonjour", "bye" => "Au revoir", "hi-name" => "Bonjour %name%", "song" => "La chanson est %song%" ); ~~~ Implementing the translation mechanism in your application is trivial but depends on how you wish to implement it. You can use anautomatic detection of the language from the user's browser or you can provide a settings page where the user can select their language. A simple way of detecting the user's language is to parse the `$_SERVER['HTTP_ACCEPT_LANGUAGE']` contents, or if you wish, access itdirectly by calling `$this->request->getBestLanguage()` from an action/controller: ~~~ <?php use Phalcon\Mvc\Controller; use Phalcon\Translate\Adapter\NativeArray; class UserController extends Controller { protected function getTranslation() { // Ask browser what is the best language $language = $this->request->getBestLanguage(); // Check if we have a translation file for that lang if (file_exists("app/messages/" . $language . ".php")) { require "app/messages/" . $language . ".php"; } else { // Fallback to some default require "app/messages/en.php"; } // Return a translation object return new NativeArray( array( "content" => $messages ) ); } public function indexAction() { $this->view->name = "Mike"; $this->view->t = $this->getTranslation(); } } ~~~ The `_getTranslation()` method is available for all actions that require translations. The `$t` variable is passed to the views, and with it,we can translate strings in that layer: ~~~   <p><?php echo $t->_("hi"), " ", $name; ?></p> ~~~ The `_()` method is returning the translated string based on the index passed. Some strings need to incorporate placeholders forcalculated data i.e. Hello %name%. These placeholders can be replaced with passed parameters in the `_()` method. The passed parametersare in the form of a key/value array, where the key matches the placeholder name and the value is the actual data to be replaced: ~~~   <p><?php echo $t->_("hi-name", array("name" => $name)); ?></p> ~~~ Some applications implement multilingual on the URL such as [http://www.mozilla.org/](http://www.mozilla.org/)**es-ES**/firefox/. Phalcon can implementthis by using a [*Router*](#). ### 自定义适配器（Implementing your own adapters）[](# "永久链接至标题") The [*Phalcon\Translate\AdapterInterface*](#) interface must be implementedin order to create your own translate adapters or extend the existing ones: ~~~ <?php use Phalcon\Translate\AdapterInterface; class MyTranslateAdapter implements AdapterInterface { /** * Adapter constructor * * @param array $data */ public function __construct($options); /** * Returns the translation string of the given key * * @param string $translateKey * @param array $placeholders * @return string */ public function _($translateKey, $placeholders = null); /** * Returns the translation related to the given key * * @param string $index * @param array $placeholders * @return string */ public function query($index, $placeholders = null); /** * Check whether is defined a translation key in the internal array * * @param string $index * @return bool */ public function exists($index); } ~~~ There are more adapters available for this components in the [Phalcon Incubator](https://github.com/phalcon/incubator/tree/master/Library/Phalcon/Translate/Adapter) | - [索引](# "总目录") - [下一页](# "Universal Class Loader") | - [上一页](# "访问控制列表 ACL（Access Control Lists ACL）") |