open new window in php

<?php

$_SESSION['dsize'] = $_POST['dsize'];
if ($_SESSION['deadline']=="Urgent" )
{
?>
<script type = "text/javascript">

window.open('https://usd.swreg.org/cgi-bin/s.cgi?s开发者_Python百科=104597&p=104597-1&v=0&d=0&q=<?php echo $_SESSION['dsize']?>');
</script>
<?php

}
else
{

?>
<script type = "text/javascript">

window.open('https://usd.swreg.org/cgi-bin/s.cgi?s=104597&p=104597-2&v=0&d=0&q=<?php echo $_SESSION['dsize']?>');
</script>
<?php

}

 header('Location: confirmorder.php');

?>

if i delete the last header line new window is opening but if i use the header line new window does not open and confirmorder.php is opened.

can anyone tell me how to open new window for checkout and send the user to confirmorder page.

Thanks

Maybe you should use Javascript to redirect the client to the page you want.

At the end of the response, you should do something like:

 <script type="text/javascript">
<!--
window.location = "confirmorder.php"
//-->
</script>

Usually in works I use this code

function openNewTap(string $url)
        {
            echo '<script type="text/javascript">';
            echo 'window.open("'.$url.'");';
            echo '</script>';
        }