/**
* Checks if a locale identifier is a real locale or not
* Examples:
* "en_XX" refers to "en", which returns true
* "XX_yy" refers to "root", which returns false
*
* @param string|Zend_Locale $locale Locale to check for
* @param boolean $create If true, create a default locale, if $locale is empty
* @return false|string false if given locale is not a locale, else the locale identifier is returned
*/
public static function isLocale($locale, $create = false)
{
if (empty($locale) and $create === true) {
$locale = new self();
}
if ($locale instanceof Zend_Locale) {
return $locale->toString();
}
if (!is_string($locale)) {
return false;
}
if (empty(self::$_auto)) {
$temp = new self($locale);
self::$_auto = $temp->getDefault(null, false);
self::$_browser = $temp->getDefault(self::BROWSER, false);
self::$_environment = $temp->getDefault(self::ENVIRONMENT, false);
}
if ($locale == 'auto') {
$locale = self::$_auto;
}
if ($locale == 'browser') {
$locale = self::$_browser;
}
if ($locale == 'environment') {
$locale = self::$_environment;
}
if (is_array($locale)) {
$locale = key($locale);
}
if (array_key_exists($locale, self::$_localeData)) {
return $locale;
} else {
$locale = explode('_', $locale);
if (array_key_exists($locale[0], self::$_localeData)) {
return $locale[0];
}
}
return false;
}