using session in wap??

[Anon]

i wannar using php4 session in my wap proj.
but i find it doesn't work.
codes like:
test.wml
<?header("Content-Type:text/vnd.wap.wml;");?>
<?session_start();?>
<?
require("../gb2un.inc");
print("<wml><card><p>");
$username="dxj";
$password="978";
$id="3";
session_register("username");
session_register("password");
session_register("id");
print "<a href='test1.wml'>"."go"."</a>";
print("</p></card></wml>");
?>

test1.wml
<?header("Content-Type:text/vnd.wap.wml;");?>
<?
require("../gb2un.inc");
print("<wml><card><p>");
print $username."<br/>";
print $password."<br/>";
print $id."<br/>";
print("</p></card></wml>");
?>
in test1.wml: it didn't show the session_result of the $username,$password and $id. why????

[Anon]

in test1.wml it didn't show the session_result of $username,$password and $id because you never write this
session_start(); in top
so you can try this in test1.wml
<? session_start();
header("Content-Type:text/vnd.wap.wml;");

?>
<?
require("../gb2un.inc");
print("<wml><card><p>");
print $username."<br/>";
print $password."<br/>";
print $id."<br/>";
print("</p></card></wml>");
?>