This is determined by the Accept-Language HTTP header.
| public getAcceptableLanguages ( ) : array | ||
| return | array | the languages ordered by the preference level. The first element represents the most preferred language. |
/**
* Negotiates the application language.
* @param Request $request
* @return string the chosen language
*/
protected function negotiateLanguage($request)
{
if (!empty($this->languageParam) && ($language = $request->get($this->languageParam)) !== null) {
if (isset($this->languages[$language])) {
return $this->languages[$language];
}
foreach ($this->languages as $key => $supported) {
if (is_integer($key) && $this->isLanguageSupported($language, $supported)) {
return $supported;
}
}
return reset($this->languages);
}
foreach ($request->getAcceptableLanguages() as $language) {
if (isset($this->languages[$language])) {
return $this->languages[$language];
}
foreach ($this->languages as $key => $supported) {
if (is_integer($key) && $this->isLanguageSupported($language, $supported)) {
return $supported;
}
}
}
return reset($this->languages);
}
