PHP (46 bytes)
==============

Here is another attempt, but now using PHP.

The scrambled code:

    print($a=Y<$dY^r^$o0);($e++)or($heY+Yo);c5+f0;

You can run the scrambled version, it will output `0`.


The unscrambled code outputs this:

    171819202122232425262728293031012345678910171717171717171717171717171717171717171717171717


Have fun with this one :)

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Revealing the answer:
=====================

More than a week has past (I submited this at 8th November 2014, today is 17th), and here is the expected answer:

>!    for($Y=a;$Y^$t++<50e0;$Y++)echo(ord($Y^prin));

For the invalid answer, it should be this:

>!    for($Y=a;$Y^$t++<99e9;$Y++)echo(ord($Y^prin));

Thank you for not cracking this one :)

________________________________________________________________

**Old submission:** (invalid because 1,4889251×10^77 Yotabytes is over the limit of 100 bytes)


The scrambled code:

     print($a=Y<$dY^r^$o9);($e++)or($heY+Yo);c9+f9;

You can run the scrambled version, it will output `0`.

The output that the unscrambled version produces:

I'm really sorry, but the output won't fit here.<br>
But, for purpose of testing, you can remove **ONE** `e` ([Unicode Character 'LATIN SMALL LETTER E' (U+0065)][1]) and **ONE** `9` ([Unicode Character 'DIGIT NINE' (U+0039)][2]).<br>
By removing it, the output is the following:

    17181920212223242526272829303101234567891017171717171717171717171717171717171717171717171717171818181818181818181818181818181818181818181818181818191919191919191919191919191919191919191919

There is **NO FEASIBLE WAY TO POST THE CODE**, since the code generated would be `1,4889251×10^76` **Yotabytes** long ([Byte units][3], [Google calculation][4]).


  [1]: http://www.fileformat.info/info/unicode/char/0065/index.htm
  [2]: http://www.fileformat.info/info/unicode/char/0039/index.htm
  [3]: http://en.wikipedia.org/wiki/Byte
  [4]: https://www.google.pt/search?q=%289e99%2F1024%2F1024%2F1024%2F1024%2F1024%2F1024%2F1024%2F1024%29*2&client=opera&oe=utf-8&channel=suggest&gws_rd=ssl&oq=%289e99%2F1024%2F1024%2F1024%2F1024%2F1024%2F1024%2F1024%2F1024%29*2&gs_l=heirloom-serp.12...379890.385066.0.386515.6.3.0.3.0.0.156.295.2j1.3.0.msedrc...0...1ac.1.34.heirloom-serp..6.0.0.vWCMxBlL8Lc