passing values between php pages, not working !!

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hello guys I tried several ways to pass certain data between two pages .
what i do in the first php page, is setting a var value to $var = somthing .

now what i want, is to pass that value on to the next page, which will be written into a label control or somthing . i tried session, querystrings and it seems i dont know how to do this right, please guide me .

example :

PHP

$content = "hello"; //if its not string sholud i cast it??
    
    header('location:sms_main_form.php?credits='.$content);

2nd page:

XML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<?php
 echo $_GET['credits']
?>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

in the 2nd page it echoes "unknown command"

Posted 30-Mar-12 0:25am

moses12345

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