UPDATE Mysql table

[NiCrom]

Hello, I create a new column in tblclients table and i want to update this column from a custom page. I do something like this:

$result = mysql_query("SELECT newcolumn FROM tblclients WHERE id=".(int)$_SESSION['uid']);

$data = mysql_fetch_array($result);

$newcolumn = $data[0];

$smartyvalues["newcolumn"] = $newcolumn;

 

 

if(isset($_POST['submit']))

{

$result = mysql_query("UPDATE tblclients SET newcolumn='test' WHERE id=".(int)$_SESSION['uid'])

 

or die(mysql_error());

$data = mysql_fetch_array($result);

}

 

but.. nothing. Please help me, thanks.