<?php
$id=$_GET['id'];
include("conn.php");
$sql = mysql_query("SELECT * FROM table order by id desc") or die mysql_error());
$row = mysql_fetch_array($sql);
$gledan= $row['gledan'] + 1;
$update = mysql_query("Update table set gledan= '$gledan' where id = '$id") or die(mysql_error());
?>