为什么此代码不重定向页面

<?php
    error_reporting(0);

    include("../../php/open.php");// db-connection



        print_r($_REQUEST);
         if(isset($_REQUEST['form1']))
          {  


            if(!empty($_POST['description'])){

                $id=$_REQUEST['id'];

                $field_name = $_REQUEST['field_name'];

                $paragraph1=$_REQUEST['description'];

                $text = $paragraph1; 

                $query ="UPDATE website_data SET field_value = '$text', field_name= '$field_name' WHERE id = '$id';";

                $result=mysql_query($query);
                if($result==true){
                    $url="index.php?page=content_edit";
                    die('<script type="text/javascript">window.location.href="' . $url . '";</script>');
                }
              }
              else{
                  echo "<script>alert('page body can not be empty')</script>";
              }
         }

    ?>

and shows the output....

please use this:

   if($result==true){
   echo "<script type='text/javascript'>window.location.href='index.php?page=content_edit'
  </script>";
              }

Alternatively you can use php header function to redirect, but don't forget to remove print_r from the top.

instead of

 die('<script type="text/javascript">window.location.href="' . $url . '";</script>');

use

header('location : '.$url);