What is the recommended approach for creating multilingual websites in PHP?

To create multilingual websites in PHP, it is recommended to use language files to store translations for different languages. By using language files, you can easily switch between languages by including the appropriate file based on the user's language preference. This approach helps keep your code organized and makes it easier to manage translations for different languages.

// Set the default language
$default_language = 'en';

// Get the user's language preference
$user_language = isset($_GET['lang']) ? $_GET['lang'] : $default_language;

// Include the language file based on the user's language preference
include 'languages/' . $user_language . '.php';

// Use the translations from the language file
echo $lang['welcome_message'];