I have a proxy at http://rahul2001.com/proxy/

I site can be 'proxied' by like this:
http://rahul2001.com/proxy/proxy.php/http://site-to-be-proxied.com/

The problem is that Google seems to be crawling pages through my proxy :/

[![uh oh..][1]][1] 

I do NOT link a proxied version of Yahoo food _or_ Google Careers _or_ Google Search Hindi Help, but these still turn up in the search results...

**PROBLEMS:**

-I DO NOT want to block my website/proxy from search engines.

-I DO NOT want Google to use up my bandwidth by crawling useless sites.

-I DO NOT want to use captcha since a few of my apps use this proxy.

-I DO NOT want Google to spoil the search results of my website in this manner.

What do I do??

**ALSO, why the hell is google entering random URLs into the form??**
  [1]: https://i.sstatic.net/l2Hdn.png



**EDIT:**

proxy.php (first few lines):

    <head><meta name="robots" content="noindex, nofollow" />
    </head>
    <?php
    /*
    miniProxy - A simple PHP web proxy. <https://github.com/joshdick/miniProxy>
    Written and maintained by Joshua Dick <http://joshdick.net>.
    miniProxy is licensed under the GNU GPL v3 <http://www.gnu.org/licenses/gpl.html>.
    */

Error:

    Warning: Cannot modify header information - headers already sent by (output started at /home/rahulcom/public_html/proxy/proxy.php:3) in /home/rahulcom/public_html/proxy/proxy.php