[PHP] Flash vars to PHP to URL

Not an easy question or maybe its really easy.

I have to URL post form variables to a web address.

Original HTML code [Works]

<form action="http://somewebsite.com/webpush/webpush" action="POST">

        Modtager: <input type="text" name="sender">
        <br>
        Besked: <input type="text" name="personal_message">
        <br>
        <input type="radio" name="webpush" value="11">SMALL
        <br>
        <input type="radio" name="webpush" value="12">MEDIUM
        <br>
        <input type="radio" name="webpush" value="13">X-LARGE
        <br>

        <input type="radio" name="webpush" value="14">XXX-LARGE
        <br>
        <input type="hidden" name="message" value="[personal_message] has sent you a message.">
        <input type="submit" value="Send" />
    </form>  

AS code that works inside flash [works]

on (release) {

    data_lv = new LoadVars();
    data_lv.sender = s_mess.s_film.sender;
    data_lv.personal_message = s_mess.s_film.personal_message;
    data_lv.webpush = s_mess.s_film.webpush;
    data_lv.message = s_mess.s_film.message;
    data_lv.onLoad = function (ok)
    {
         if (ok)
         {
              trace("Transaction success...");
         }
         else
         {
              trace("Error...");
         }
    }
    data_lv.sendAndLoad("http://somewebsite.com/webpush/webpush", data_lv, "POST");
    
    }

AS code to php [Should work]

data_lv.sendAndLoad("post.php", data_lv, "POST");

Here is the big problem I think. I want the php file to send this string.

http://somewebsite.com/webpush/webpush?sender=555123456
&personal_message=Name&webpush=13
&message=%5Bpersonal_message%5D+has+sent+you+a+message.

Here is my php code [not working]


<?php
$get_vars = '?';
foreach($_POST as $key=>$val) {
    $get_vars .= $key.'='.urlencode($val).'&';
}
$url = 'http://somewebsite.com/webpush/webpush'.$get_vars;
header('location: '.$url);

?>

please help me???