Piwik\ProxyHttp::shouldCompressFile PHP Метод

    private static function shouldCompressFile($fileToCompress, $compressedFilePath)
    {
        $toCompressLastModified = @filemtime($fileToCompress);
        $compressedLastModified = @filemtime($compressedFilePath);
        return !file_exists($compressedFilePath) || $toCompressLastModified > $compressedLastModified;
    }