Op donderdag 08 augustus 2002 23:22, schreef Ashley M. Kirchner:
>     DELETES another field and resubmits.  At this point, that variable
>     was already registered, and deleting the value from the form has no
>     effect.  The old value is still there and gets submitted.  I need
>     to check for this somehow.

You shouldn't register before the form is complete right and not after every 
submit. 
something
like:
<?
$error='';
if(isset($_POST['yes']))
{
if($_POST['field1'])!=1)$error='field1 is not1 !';
etc...
}

if(empty($error))
{
session_start();
$_SESSION['field1']=$_POST['field1'];
header(Location: next_page);
exit;
}

if(!empty($error)){ echo error.'<br>'}

?>
<form action="<?=$_SERVER['PHP_SELF']?>" method="post">
<input type="text" name="field1" value="<?=isset($_POST['field1']) ?  
$_POST['field1'] : ''?>">
etc........
<input type="sumbit" name="yes">
</form>





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