C++ and PHP [Solved]

#include<iostream>
#include <string>
using namespace std;
int main(int argc, char* argv[])
{
	if(argv[1]=="DoSomething") //Parameter passed. Process it and return it using std::cout
	{
		//Do some processing on the arguments passed here...
		string ReturnProcessedOutput = "Thank God, I am not an atheist !";
		cout << ReturnProcessedOutput; //Return it to PHP
	}
	else
	{
		cout << "Some raw data for PHP script..."; //Return to PHP
	}
	return 0;
}

<?php
    $Parameter1 = "DoSomething"; //Our first parameter
    $output=`PHPTesting.exe $Parameter1`; //Execute PHPTesting.exe (name of my cpp exe) passing our first parameter.
    echo "<strong>$output</strong>"; //Output what you recieved from your cpp program (output variable).
?>

typedef struct _http_header
{
  char *header;
  char *value;
} HTTP_HEADER;

static int strpos(const char *haystack, const char *needle)
{
  const char *ind = strstr(haystack, needle);
  return (ind != NULL ? (int)(ind - haystack) : -1);
}

static char *substr(const char *subject, int start, int len)
{
  char *substring = NULL;
  if (start >= 0 && start < (int)strlen(subject))
  {
    len = ((start + len) > (int)strlen(subject) ? (int)(strlen(subject) - start) : len);
    substring = (char*)calloc(len + 1, sizeof(char));
    for(int i = 0; i < len; i++)
      substring[i] = subject[start + i];
  }
  return substring;
}

static char* CreateHttpGetString(char *url, HTTP_HEADER *headers, int nheaders)
{
  const char *crlf = "\r\n";
  const size_t szlf = 2;
  char *request = NULL;

  if (strncmp(url, "http://", strlen("http://")) == 0)
    url += strlen("http://");
    
  int fslash = strpos(url, "/");
  if (fslash == -1)
    fslash = (int)(strlen(url));

  char *domain = substr(url, 0, fslash);
  char *relpath = substr(url, fslash, (int)strlen(url));
  
  if (domain != NULL)
  {
    if (relpath == NULL) 
      relpath = "/"; //no relative path, get the base path.

    //gets the size of the request before building it.
    size_t szRequest = strlen("GET  HTTP/1.1") + strlen(relpath) + (3 * szlf) + strlen("Host: ") + strlen(domain);
    for(int i = 0; i < nheaders; i++) //loop through the headers to get their lengths (CRLFheader: value)
      szRequest += szlf + strlen(headers[i].header) + 2 + strlen(headers[i].value);

    request = (char*)calloc(szRequest + 1, sizeof(char)); //allocate some memory for the request string.
    sprintf(request, "GET %s HTTP/1.1%sHost: %s", relpath, crlf, domain); //copy over the basics of the request.

    for(int i = 0; i < nheaders; i++) //loop through the headers and append each one.
    {
      strcat(request, crlf);
      strcat(request, headers[i].header);
      strcat(request, ": ");
      strcat(request, headers[i].value);
    }
    strcat(strcat(request, crlf), crlf);
  }

  if (strcmp(relpath, "/") != 0) //if there was no original relpath, we set the path to "/" which is constant and cannot be freed.
    free(relpath);
  free(domain);
  return request;
}

  HTTP_HEADER headers[5];
  headers[0].header = "User-Agent"; headers[0].value = "Mozilla/5.0 Firefox/3.6.12";
  headers[1].header = "Accept"; headers[1].value = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
  headers[2].header = "Accept-Language"; headers[2].value = "en-us,en;q=0.5";
  headers[3].header = "Accept-Encoding"; headers[3].value = "deflate";
  headers[4].header = "Accept-Charset"; headers[4].value = "ISO-8859-1,utf-8;q=0.7,*;q=0.7";

  printf("%s", CreateHttpGetString("http://www.mpgh.net/forum/31-c-c-programming/419473-c-php.html", headers, 5));

GET /forum/31-c-c-programming/419473-c-php.html HTTP/1.1
Host: www.mpgh.net
User-Agent: Mozilla/5.0 Firefox/3.6.12
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7