样式一：

1. 将代码放入 functions.php

一般在主题根目录：网站 /usr/themes/ 主题

修改一下你自己的网站时间

    // 设置时区date_default_timezone_set('Asia/Shanghai');/*** 秒转时间，格式 年 月 日 时 分 秒**/function getBuildTime() {// 在下面按格式输入本站创建的时间$site_create_time = strtotime('2019-06-23 00:00:00');$time = time() - $site_create_time;if (is_numeric($time)) {$value = array("years" => 0, "days" => 0, "hours" => 0,"minutes" => 0, "seconds" => 0,);if ($time >= 31556926) {$value["years"] = floor($time / 31556926);$time = ($time % 31556926);}if ($time >= 86400) {$value["days"] = floor($time / 86400);$time = ($time % 86400);}if ($time >= 3600) {$value["hours"] = floor($time / 3600);$time = ($time % 3600);}if ($time >= 60) {$value["minutes"] = floor($time / 60);$time = ($time % 60);}$value["seconds"] = floor($time);echo '<span class="btime">'.$value['years'].'年'.$value['days'].'天'.$value['hours'].'小时'.$value['minutes'].'分</span>';} else {echo '';}}

2. 修改 footer.php
在页脚选择合适的位置加入:

<?php getBuildTime(); ?>

样式二：

修改 footer.php 在页脚选择合适的位置加入:

    本站已安全运行:<span id="momk"></span><script language=javascript>function show_date_time(){window.setTimeout("show_date_time()", 1000);BirthDay=new Date("05-06-2016 12:12:24");//建站日期today=new Date();timeold=(today.getTime()-BirthDay.getTime());sectimeold=timeold/1000secondsold=Math.floor(sectimeold);msPerDay=24*60*60*1000e_daysold=timeold/msPerDaydaysold=Math.floor(e_daysold);e_hrsold=(daysold-e_daysold)*-24;hrsold=Math.floor(e_hrsold);e_minsold=(hrsold-e_hrsold)*-60;minsold=Math.floor((hrsold-e_hrsold)*-60);seconds=Math.floor((minsold-e_minsold)*-60);momk.innerHTML=daysold+"天"+hrsold+"小时"+minsold+"分"+seconds+"秒" ;}show_date_time();</script><style>#momk{animation:change 10s infinite;font-weight:800; }@keyframes change{0%{color:#5cb85c;}25%{color:#556bd8;}50%{color:#e40707;}75%{color:#66e616;}100% {color:#67bd31;}}</style>

样式三：

修改 footer.php 在页脚选择合适的位置加入:

    <span id="momk"></span><span id="momk" style="color: #ff0000;"></span><script type="text/javascript">function NewDate(str) {str = str.split('-');var date = new Date();date.setUTCFullYear(str[0], str[1] - 1, str[2]);date.setUTCHours(0, 0, 0, 0);return date;}function momxc() {var birthDay =NewDate("2016-5-6");var today=new Date();var timeold=today.getTime()-birthDay.getTime();var sectimeold=timeold/1000var secondsold=Math.floor(sectimeold);var msPerDay=24*60*60*1000; var e_daysold=timeold/msPerDay;var daysold=Math.floor(e_daysold);var e_hrsold=(daysold-e_daysold)*-24;var hrsold=Math.floor(e_hrsold);var e_minsold=(hrsold-e_hrsold)*-60;var minsold=Math.floor((hrsold-e_hrsold)*-60); var seconds=Math.floor((minsold-e_minsold)*-60).toString();document.getElementById("momk").innerHTML = "本站已安全运行"+daysold+"天"+hrsold+"小时"+minsold+"分"+seconds+"秒";setTimeout(momxc, 1000);}momxc();</script>  <style>#momk{animation:change 10s infinite;font-weight:800; }@keyframes change{0%{color:#5cb85c;}25%{color:#556bd8;}50%{color:#e40707;}75%{color:#66e616;}100% {color:#67bd31;}}</style>```