if ( !file_exists("data.txt")) {
        touch("data.txt");
        $file = @fopen("data.txt", "+r");
        @fclose($file);
        header( 'refresh: 1; url=/' );
        } else {
        $file = @fopen("data.txt", "a");
        $text = "bilgiler";
        @fwrite($file, $text);
        @fclose($file);
        }