it's possible, but you would need to hand code it using a switch..case statement after the code block for the update.
heres an example using the value of a userID session to determine the redirect location:
<?php
if (isset($_POST["Update"]) || isset($_POST["Update_x"])) {
@session_start();
switch ($_SESSION['userID']) {
case 1:
$redir = "page1.php";
break;
case 2:
$redir = "page2.php";
break;
case 3:
$redir = "page3.php";
break;
}
header("Location: ".$redir."");
}
?>
see this page for more details:
control-structures.switch.php