$query = "SELECT * FROM `insta` WHERE `postUrl` ='".$postUrl."'";
                    if ($result = mysqli_query($mysqli,$query))
                      {
                       if(mysqli_num_rows($result) == 1)
                        {
                          $query3 = mysqli_query($mysqli, "UPDATE `insta` SET `instaLikes` = '".$instaLikes."', `updatedOn` = '".$datetime."' WHERE `postUrl` = '".$postUrl."')") or die(mysqli_error($mysqli));
                          echo 'update <br />';
                        }
                      else
                          $query2 = mysqli_query($mysqli, "INSERT INTO `insta` (`userid`, `username`, `description`, `postUrl`, `smallImage`, `fullImage`, `instaLikes`, `createdOn`, `addedOn`) VALUES ('".$userid."', '".$username."', '".$description."', '".$postUrl."', '".$smallImage."', '".$fullImage."', '".$instaLikes."', '".$datetime."', '".$date."')") or die(mysqli_error($mysqli));
                          echo 'insert <br />';
                      }