hỏi đáp php

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

// get the redirection url from GET variable
$redirect_to = !empty($_GET['url'])
 ? trim(strip_tags(stripslashes($_GET['url'])))
 : '';

$wait_time    = 15000; // 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>

<!--
    <script>var redirect = window.setTimeout(function(){window.open("/index.php/2022/08/23/chao-moi-nguoi/"), "_blank"; myWindow.focus();},<?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(); //hiện thị header
?>
<style>
.sora-ads-here {
  display: block;
    background-color: #eee;
    text-align: center;
    font-size: 13px;
    color: #aaaaaa;
    font-weight: 400;
    font-style: italic;
    line-height: 90px;
    border: 1px solid #ccc;
}
</style>
<div><p style="padding-bottom: 1em;">
	&nbsp;
	</p></div>
 <div id="redirect-page-content"  style="width: 100%; background:#fff; height: 50%; margin: 0px 0px 0px 0px; text-align: center; font-size: 18px;">
        <div class="redirect-message">
        <?php if (!empty($redirect_to)) {
        //echo '<p style="font-size: 95%;margin: 8px !important; color: #191919;">BẠN ĐANG ĐƯỢC CHUYỂN ĐẾN TRANG TẢI FILE</p>';
        //printf(__('<strong style="margin: 8px !important;">%s</strong>'),esc_html($redirect_to));
        ?>
         <p>&nbsp;</p>
			<p style="font-size: 100%;margin: 8px 0px 15px 0px !important;color: #f50c0c;"><strong>TỰ ĐỘNG CHUYỂN ĐẾN TRANG TẢI FILE SAU <span style="color: #2fad16" id="timer"></span> GIÂY </strong></p>

<p style="font-size: 90%;margin: 8px 0px 15px 0px !important;color: #FFFFFF"> . </p> </p>
<p></p>
</div>

         <?php
        } else {
        _e('Link chuyển hướng bị lỗi');
        }
        ?>
        </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>

<?php
 get_footer(); //hiện thị footer
?>
<style>
.sora-ads-here {
  display: block;
    background-color: #eee;
    text-align: center;
    font-size: 13px;
    color: #aaaaaa;
    font-weight: 400;
    font-style: italic;
    line-height: 90px;
    border: 1px solid #ccc;
#chuyenngay{width: 60%; margin: 7px;background: #FF9966; 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;}
#chuyenngay:hover, #dongchuyen:hover{background: #555; border: 1px solid #555}
#chuyenngay2{width: 60%; margin: 7px;background: ##00DD00; 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;}
#chuyenngay2:hover, #dongchuyen:hover{background: #555; border: 1px solid #555}
}
</style>
</div></div>