<html> <head><title>Button1</title></head>
<body>
<?php
function display_errors ()
{
global $errors ;
foreach ($errors as $err )
{
echo $err.'<BR>';
}
}
function display_form ()
{
echo "<FORM METHOD='POST' ACTION='phpvalidate.php'>";
echo "<INPUT TYPE='SUBMIT' VALUE='OK' >";
echo "<INPUT TYPE='HIDDEN' NAME='seen_already' VALUE='data'> ";
echo "</FORM>" ;
}
$errors =array ();
if (isset ($_REQUEST ["seen_already"]))
{
validate_data ();
if (count ($errors) >0 )
{
display_errors ();
display_form () ;
}
else
{
process_data ();
}
}
else
{
display_form ();
}
?>
</body>
</html>
