/**
* Returns a list of languages the user has selected in their browser’s settings, canonicalized using
* {@link LocaleData::getCanonicalID}.
*
* Internally, this method checks the Accept-Language header that should have accompanied the request.
* If that header was not present, the method will return `false`.
*
* @return array|false The preferred languages, or `false` if Craft is unable to determine them.
*/
public function getBrowserLanguages()
{
if (!isset($this->_browserLanguages)) {
$this->_browserLanguages = array();
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) && preg_match_all('/([\\w\\-_]+)\\s*(?:;\\s*q\\s*=\\s*(\\d*\\.\\d*))?/', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $matches, PREG_SET_ORDER)) {
$weights = array();
foreach ($matches as $match) {
$this->_browserLanguages[] = LocaleData::getCanonicalID($match[1]);
$weights[] = !empty($match[2]) ? floatval($match[2]) : 1;
}
// Sort the languages by their weight
array_multisort($weights, SORT_NUMERIC, SORT_DESC, $this->_browserLanguages);
}
}
if ($this->_browserLanguages) {
return $this->_browserLanguages;
} else {
return false;
}
}
/**
* Returns the user preferred languages sorted by preference.
* The returned language IDs will be canonicalized using {@link LocaleData::getCanonicalID}.
* This method returns false if the user does not have language preferences.
*
* @return array the user preferred languages.
*/
public function getBrowserLanguages()
{
if ($this->_browserLanguages === null) {
if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) && ($n = preg_match_all('/([\\w\\-_]+)\\s*(;\\s*q\\s*=\\s*(\\d*\\.\\d*))?/', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $matches)) > 0) {
$languages = array();
for ($i = 0; $i < $n; ++$i) {
$languages[$matches[1][$i]] = empty($matches[3][$i]) ? 1.0 : floatval($matches[3][$i]);
}
// Sort by it's weight.
arsort($languages);
foreach ($languages as $language => $pref) {
$this->_browserLanguages[] = LocaleData::getCanonicalID($language);
}
}
if ($this->_browserLanguages === null) {
return false;
}
}
return $this->_browserLanguages;
}
