public static function registerErrorHandler($handlerCallback = null)
{
if (is_null($handlerCallback)) {
$handlerCallback = array(get_class(), 'handleError');
}
// prevent stack error
Zend_Loader::loadClass('BaseZF_Error_Exception');
// Register new callback and backup old ones
// To convert normal error has exception
self::$_oldErrorhandler = set_error_handler($handlerCallback);
return self::$_oldErrorhandler;
}