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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Internals
* @since 5.9.0
*/
/**
* Group of language utility methods for use by WPSEO.
* All methods are static, this is just a sort of namespacing class wrapper.
*/
class WPSEO_Language_Utils {
/**
* Returns the language part of a given locale, defaults to english when the $locale is empty.
*
* @param string $locale The locale to get the language of.
*
* @returns string The language part of the locale.
*/
public static function get_language( $locale = null ) {
$language = 'en';
if ( empty( $locale ) || ! is_string( $locale ) ) {
return $language;
}
$locale_parts = explode( '_', $locale );
if ( ! empty( $locale_parts[0] ) && ( strlen( $locale_parts[0] ) === 2 || strlen( $locale_parts[0] ) === 3 ) ) {
$language = $locale_parts[0];
}
return $language;
}
/**
* Returns the user locale for the language to be used in the admin.
*
* WordPress 4.7 introduced the ability for users to specify an Admin language
* different from the language used on the front end. This checks if the feature
* is available and returns the user's language, with a fallback to the site's language.
* Can be removed when support for WordPress 4.6 will be dropped, in favor
* of WordPress get_user_locale() that already fallbacks to the site's locale.
*
* @returns string The locale.
*/
public static function get_user_locale() {
if ( function_exists( 'get_user_locale' ) ) {
return get_user_locale();
}
return get_locale();
}
/**
* Returns the full name for the sites' language.
*
* @return string The language name.
*/
public static function get_site_language_name() {
require_once ABSPATH . 'wp-admin/includes/translation-install.php';
$translations = wp_get_available_translations();
$locale = get_locale();
$language = isset( $translations[ $locale ] ) ? $translations[ $locale ]['native_name'] : 'English (US)';
return $language;
}
}
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