if(isset($_POST['pic_type']) && $_POST['pict_type'] != 0 && $_POST['pict_type'] != 86) {
  $_POST['pic_type'] = mysql_real_escape_string($_POST['pic_type']);
  $result = mysql_query("SELECT parent_product_id FROM affilates WHERE id=".$_POST['pic_type']); //guess

  if (mysql_num_rows($result) == 0) //no parent_product_id assocated to that pic_type
    //doNormalCaptcha
  $row = mysql_fetch_row($result);
  $captchaType = $row[0];

  if($captchaType == 86)
    //doAsirra
  else
    //doNormalCaptcha
}