/**
* Resets the internal state.
*/
private static function reset()
{
self::$currencyBundle = null;
self::$languageBundle = null;
self::$localeBundle = null;
self::$regionBundle = null;
self::$icuVersion = false;
self::$icuDataVersion = false;
self::$entryReader = null;
}
/**
* Returns the version of the installed ICU library.
*
* @return null|string The ICU version or NULL if it could not be determined.
*/
public static function getIcuVersion()
{
if (false === self::$icuVersion) {
if (!self::isExtensionLoaded()) {
self::$icuVersion = self::getIcuStubVersion();
} elseif (defined('INTL_ICU_VERSION')) {
self::$icuVersion = INTL_ICU_VERSION;
} else {
try {
$reflector = new \ReflectionExtension('intl');
ob_start();
$reflector->info();
$output = strip_tags(ob_get_clean());
preg_match('/^ICU version (?:=>)?(.*)$/m', $output, $matches);
self::$icuVersion = trim($matches[1]);
} catch (\ReflectionException $e) {
self::$icuVersion = null;
}
}
}
return self::$icuVersion;
}
