从WPML网站：

http://wpml.org/documentation/support/wpml-coding-api/

Language constants

WPML defines the following constants which can be used in the theme:

Constant              Description                                        Example

ICL_LANGUAGE_CODE     Code for the current language                      fr
ICL_LANGUAGE_NAME     Name of current language, in the current language  Français
ICL_LANGUAGE_NAME_EN  Name of the current language name in English       French

要获取特定帖子或页面的语言，可以使用wpml_get_language_information(). 这将返回具有以下索引的数组：

语言环境文字方向显示本地名称不同语言

Example

$language_information = wpml_get_language_information($post_id);
$locale = $language_information[\'locale\'];