<?php
session_start ();
?>
<form method="POST" action="./form1.php">
<input type="text" name="txt1"></input>
<input type="submit"></input>
</form>
<?php
setcookie ("COOKIE64", "COOKIE64", time () + 1200);
echo session_id () . "<br>\n";
echo htmlentities ($_COOKIE ["COOKIE64"]) . "<br>\n";
echo htmlentities ($_COOKIE ["COOKIE64A"]) . "<br>\n";
echo htmlentities ($_POST ["txt1"]) . "<br>\n";
session_destroy ();
?>