Localization is the process of translating your application into different languages. The Lang class provides a simple mechanism to help you organize and retrieve the text of your multilingual application.
All of the language files for your application live under the application/language directory. Within the application/language directory, you should create a directory for each language your application speaks. So, for example, if your application speaks English and Spanish, you might create en and sp directories under the language directory.
Each language directory may contain many different language files. Each language file is simply an array of string values in that language. In fact, language files are structured identically to configuration files. For example, within the application/language/en directory, you could create a marketing.php file that looks like this:
return array( 'welcome' => 'Welcome to our website!', );
Next, you should create a corresponding marketing.php file within the application/language/sp directory. The file would look something like this:
return array( 'welcome' => 'Bienvenido a nuestro sitio web!', );
Nice! Now you know how to get started setting up your language files and directories. Let's keep localizing!
Notice how a dot was used to separate "marketing" and "welcome"? The text before the dot corresponds to the language file, while the text after the dot corresponds to a specific string within that file.
Need to retrieve the line in a language other than your default? Not a problem. Just mention the language to the get method:
Now, let's work on our welcome message. "Welcome to our website!" is a pretty generic message. It would be helpful to be able to specify the name of the person we are welcoming. But, creating a language line for each user of our application would be time-consuming and ridiculous. Thankfully, you don't have to. You can specify "place-holders" within your language lines. Place-holders are preceded by a colon:
'welcome' => 'Welcome to our website, :name!'
echo Lang::line('marketing.welcome', array('name' => 'Taylor'))->get();
echo __('marketing.welcome', array('name' => 'Taylor'));