Cách tạo trang chuyển hướng link download trong WordPress

<?php
/*
Template Name: Chuyển hướng
*/

$redirect_to = !empty($_GET['url'])
? trim(strip_tags(stripslashes($_GET['url'])))
: '';

$wait_time = 30000; // thời gian tự động chuyển hướng (tính bằng millisecond - ở đây là 30000 ml = 30s).
$wait_seconds = $wait_time / 1000;

add_action('wp_head', 'redirect_to_no_index', 99);
function redirect_to_no_index()
{
?>
<!-- tắt index trang này -->
<meta name="robots" content="noindex, follow">
<?php
}

add_action('wp_head', 'redirect_to_external_link');

function redirect_to_external_link()
{
global $redirect_to, $wait_seconds, $wait_time;

if (empty($redirect_to) || empty($wait_time)) {
return;
}
?>

<script>var redirect = window.setTimeout(function(){window.location.href='<?php esc_html_e($redirect_to); ?>'},<?php echo $wait_time; ?>);</script>
<noscript><meta http-equiv="refresh" content="<?php echo $wait_seconds; ?>;url=<?php esc_attr_e($redirect_to); ?>">></noscript>
<?php } get_header(); ?>


<div class="redirect-page">
<div>
<?php if (!empty($redirect_to)) {
echo '<p style="font-size: 95%;margin: 8px !important; color: #fff;">Bạn muốn chuyển đến:</p>';
printf(__('<div style="margin: 8px !important;word-wrap: break-word;">%s</div>'),esc_html($redirect_to));
?>
<p><span class="redirect-timer" id="timer"></span></p>
<div style="margin-top:20px">
<button id="redirect-get" onclick="window.location.href='<?php esc_html_e($redirect_to); ?>';return false;"><?php _e('✓ CHUYỂN TỚI LUÔN'); ?></button>
<button id="redirect-close" onclick="self.close()"><?php _e('✘ Hủy bỏ'); ?></button> <br />
</div>

<?php
} else {
_e('Liên kết này bị lỗi hoặc không tồn tại!');
}
?>
</div>
</div>
<script>
document.getElementById('timer').innerHTML = <?php echo $wait_seconds;?>;
var timer = <?php echo $wait_seconds;?>;
var interval = setInterval(function() {
var seconds = timer;
if (seconds > 0) {
--seconds;
document.getElementById('timer').innerHTML = seconds + "";
timer = seconds;
}
else {

}

}, 1000);
</script>
<style>
.redirect-page{max-width:1400px;margin-top:50px;margin-bottom:50px;margin-left:auto;margin-right:auto;text-ailgn:center;text-align: center;}
#redirect-get{margin: 7px;background: #00cc00; border: 1px solid #00cc00; color: #fff; cursor: pointer; font-size: 13px ; font-weight: bold ; padding: 7px 15px;text-decoration: none;text-transform: uppercase;text-shadow: none;}
#redirect-close{background: #ff4444; border: 1px solid #ff4444; color: #fff; cursor: pointer; font-size: 13px ; font-weight: bold ; margin-bottom: 10px;padding: 7px 15px;text-decoration: none;text-transform: uppercase;text-shadow: none;}
#redirect-get:hover, #redirect-close:hover{background: #555; border: 1px solid #555}
.redirect-timer{color:#ff3333;font-size:50px;margin-top: 30px;}
</style>
<?php get_footer(); ?>