yii\console\controllers\AssetController::findRealPath PHP Метод

    private function findRealPath($path)
    {
        $path = str_replace(['/', '\\'], DIRECTORY_SEPARATOR, $path);
        $pathParts = explode(DIRECTORY_SEPARATOR, $path);
        $realPathParts = [];
        foreach ($pathParts as $pathPart) {
            if ($pathPart === '..') {
                array_pop($realPathParts);
            } else {
                $realPathParts[] = $pathPart;
            }
        }
        return implode(DIRECTORY_SEPARATOR, $realPathParts);
    }