Captcha Cracking - Decaptcher.com

Function Curlypost ($address, $postdata)
{
    $reffer = $address;
    $agent = "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)";
    $cookie_file_path = "cookie.txt"; 
    $ch = curl_init();	
    curl_setopt($ch, CURLOPT_URL, $address); 
    curl_setopt($ch, CURLOPT_USERAGENT, $agent);
    curl_setopt($ch, CURLOPT_POST, 1);  
    curl_setopt($ch, CURLOPT_POSTFIELDS,$postdata); 
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); 
    curl_setopt($ch, CURLOPT_REFERER, $reffer);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file_path); 
    curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file_path); 
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
    curl_setopt($ch, CURLOPT_TIMEOUT, 50);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); 
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); 
    $result = curl_exec($ch);  
    curl_close($ch);  
    return $result;
}
  
Function RecogniseCaptcha ($username, $password, $filename)
{

  $postData = array();
  $postData[ 'function' ] = "picture2";
  $postData[ 'username' ] = "$username";
  $postData[ 'password' ] = "$password";
  $postData[ 'pict_to' ] = "0";
  $postData[ 'pict_type' ] = "0";
  $postData[ 'pict' ] = '@'.realpath("$filename");
  $postData[ 'submit' ] = "Send";
  
  $data = curlypost ("http://decaptcher.com/poster/", $postData);
  $pieces = explode ("|", $data);
  return $pieces [5];
}

echo RecogniseCaptcha ("username", "password", "pic.jpg");