Update form with variables ID?

I have a update form where I get variable data by typing : www.mysite.com/form.php?userid=1

That part is pretty easy, but when i want to process the data through a update page, something goes wrong. Can't see the problem so if anybody can, please help...

FORM:

<?php
if (($_GET['uid']) && (is_numeric($_GET['uid']))) {
$userid = $_GET['uid'];

$dbhost = 'localhost';
$dbuser = 'username';
$dbpass = 'password';

$conn = mysql_connect($dbhost, $dbuser, $dbpass) or die 
('Error connecting to mysql');

$dbname = 'database';
mysql_select_db($dbname);

$query="SELECT * FROM tabel WHERE id=$userid";
$result=mysql_query($query) or die("Unable to find requested user");
$currUser = mysql_fetch_array($result);
?>
<form name="form1" method="post" action="update.php">
  <table width="100%" border="0" cellspacing="0" cellpadding="0">
    <tr>
      <td><input name="ID" type="hidden" id="ID" value="<? $_GET['uid'] ?>">
      <input name="Name" type="text" id="Name" value="<? echo ("" . 
$currUser['Name'] . ""); ?>"></td>
    </tr>
    <tr>
      <td><input name="Email" type="text" id="Email" value="<? echo ("" . 
$currUser['Email'] . ""); ?>"></td>
    </tr>
    <tr>
      <td><input name="Homepage" type="text" id="Homepage" value="<? 
echo ("" . $currUser['Homepage'] . ""); ?>"></td>
    </tr>
    <tr>
      <td><input type="submit" name="Submit" value="Update"></td>
    </tr>
  </table>
</form>
<?
} else {
echo "No user specified";
}
?>

Code (markup):

...and my update page:

<?php
$ID=$_POST['ID'];
$Name=$_POST['Name'];
$Email=$_POST['Email'];
$Homepage=$_POST['Homepage'];

$dbhost = 'localhost';
$dbuser = 'username';
$dbpass = 'password';

$conn = mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting 
to mysql');

$dbname = 'database';
mysql_select_db($dbname);

$query = "UPDATE tabel SET Name = '$Name', Email = '$Email', Homepage = 
'$Homepage' WHERE ID='$userid'";

mysql_query($query);
echo "<a href=\"\form.php?uid='$userid'\">Updated - Back</a>";
mysql_close();
?>

Code (markup):

PLEASE HELP...

 

replace

 <td><input name="ID" type="hidden" id="ID" value="<? $_GET['uid'] ?>">

Code (markup):

with

 <td><input name="ID" type="hidden" id="ID" value="<? echo $userid?>">

Code (markup):

See if that helps

 

Yeah it looks like your script is passing the variables as POST variables instead of GET, change all of the $_GET to $_POST and that SHOULD work, I am lazy and just use $_REQUEST. This will require your register_globals to be set to 'on' IIRC.