why my php script can't loaded in my WAP browser

i have installed php and apache server with the configuration of Mime.type at httpd.conf like this:
AddType application/x-httpd-php-source .phps
AddType text/vnd.wap.wml .wml
AddType image/vnd.wap.wbmp .wbmp
AddType text/vnd.wap.wmlscript .wmls
AddType application/x-httpd-php .wml
Addtype application/vnd.wap.wmlc .wmlc
AddType application/vnd.wap.wmlscriptc .wmlsc
then i try the Wml script with php like this:
<?php
header("Content-type: text/vnd.wap.wml");
echo("<?xml version=\"1.0\"?>\n");
echo("<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML 1.1//EN\" \"http://www.wapforum.org/DTD/wml_1.1.xml\">\n\n");
?>
<wml>
<card id="activation" title="Activation">
<p>
<?php
$the_date = date("M d Y");
print $the_date;
print "<br/>Welcome to a PHP-enabled site!";
?>
</p>
</card>
</wml>

it is worked well, but when i have this script:

<?php
header("Content-type: text/vnd.wap.wml");
echo("<?xml version=\"1.0\"?>\n");
echo("<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML 1.1//EN\" \"http://www.wapforum.org/DTD/wml_1.1.xml\">\n\n");
?>

<wml>
<card title="Volumetric Weight" id="volume">
<p align="left">

long (cm) : <br/>
<input format="*N" maxlength="10" name="long"/><br/>
width (cm) : <br/>
<input format="*N" maxlength="10" name="width"/><br/>
high (cm) : <br/>
<input format="*N" maxlength="10" name="high"/><br/>

<do type="accept" label="count">
<go href="test1.php">
<postfield name="long" value="$(long)"/>
<postfield name="width" value="$(width)"/>
<postfield name="high" value="$(high)"/>
</go>
</do>

</p>
</card>

</wml>

then i save with test.php after that i create a new script for counting volume with php like this:

<?php
header("Content-type: text/vnd.wap.wml");
echo("<?xml version=\"1.0\"?>\n");
echo("<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML 1.1//EN\" \"http://www.wapforum.org/DTD/wml_1.1.xml\">\n\n");
?>

<wml>

<card title="Vol. Weight Result" id="hasil">
<p align="left">

Dimensi :<br/>
$long x $width x $high <br/>
<?php
$vol = $long * $width * $high;

$weight = $vol / 1000;

echo ("weight = $weight kg<br/>");
?>

</p>
</card>

</wml>

then i save it with name test1.php
then the i try it in my WAP browser first test.php it worked well second when i click count test1.php the result is 0 Kg
why that script cannot count what i input in the first test.php

Give a method to your form or $_GET is the default, which is OK of course, that is your choice.

When I am writing WAP, I don't use any wap variables at all. I use PHP's, I find it less confusing - though I havent done anything really complex.

So, if you are using $_GET method, then on your final page:


You can always check what is coming through the form by using: