/**
* @param string $acceptedLanguagesString
* @param array $fallBacks
* @param string $default
* @param array|null $categories
*
* @return Localizer
*/
public static function fromAcceptedLanguages($acceptedLanguagesString, array $fallBacks = array(), $default = 'C', array $categories = array(LC_ALL))
{
$acceptedLanguageArray = array($default => 0.0);
foreach (explode(',', $acceptedLanguagesString) as $lang) {
if (preg_match('/([a-z-]{2,})(?:;q=(.+))?/i', $lang, $matches) === 0) {
continue;
}
$localeParts = explode('_', strtr($matches[1], array('-' => '_')));
$localeCode = strtolower($localeParts[0]) . (isset($localeParts[1]) ? '_' . strtoupper($localeParts[1]) : null);
$acceptedLanguageArray[$localeCode] = isset($matches[2]) ? (double) $matches[2] : 1.0;
}
uasort($acceptedLanguageArray, function ($a, $b) {
if ($a === $b) {
return 0;
} elseif ($a < $b) {
return 1;
} else {
return 0;
}
});
sort($categories);
$localesToSet = array_keys($acceptedLanguageArray);
$localizer = new Localizer();
$localeArr = array_fill_keys($categories, $localesToSet);
if (isset($localeArr[LC_ALL]) === true) {
// special case wa?
foreach ($fallBacks as $cat => $localeMap) {
$localeArr[$cat] = $localeArr[LC_ALL];
}
}
foreach ($localeArr as $cat => $locales) {
for ($i = 0; $i < count($locales); ++$i) {
if (isset($fallBacks[$cat][$locales[$i]]) === false) {
continue;
}
$localeArr[$cat][$i] = $fallBacks[$cat][$locales[$i]];
}
$localeArr[$cat] = array_unique($localeArr[$cat]);
}
$localizer->setLocale($localeArr);
return $localizer;
}
