PHP On Couch Duplicate Entries

[eluser]USCTrojans[/eluser]
Hello, I'm trying to create a numerical system of storing fields in documents on couchdb. I am numbering each field as an integer, when I add to it I am using some php to get the next consecutive number for the field to be ordered. Everything is working fine but for some reason each post is inserted twice and I can't figure it out.
Here's my model. Any help would be greatly appreciated

Code:

function message_submission()
  {
   $cloudroom_document = strtolower($this->input->post('cloudroom'));
   try {
     $info = $this->couchdb->getDoc($cloudroom_document);
      $array = (array) $info;
      $number = count(array_keys($array)) - 1;
      //$number_string = $number;
      $number_string = (string) $number;
      $message = array('username' => $this->input->post('username'), 'message' => $this->input->post('message'));
      $doc->_id = $info->_id;
      $doc->_rev = $info->_rev;
      $doc = $info;
      $doc->$number_string = $message;
      try {
       $update = $this->couchdb->storeDoc($doc);
       $response = "the document was found and successfully updated";
       }