In this example, we set a new locale using the setlocale method and then retrieve the current locale using the getLocale method. The new locale that was set was 'fr_FR.UTF-8', and the output of the getLocale method confirms that this is now the current locale of the application. Package/Library: The getLocale and setlocale functions are part of the PHP core library and do not require any external packages or libraries to be installed.