在WordPress博客底部添加网站已运行时间效果

//网站已运行时间
博客已稳定运行：<SPAN id=span_dt_dt style="color: #2F889A;"></SPAN> <SCRIPT language=javascript>function show_date_time(){
window.setTimeout("show_date_time()", 1000);
BirthDay=new Date("9/09/2019 00:00:00");
today=new Date();
timeold=(today.getTime()-BirthDay.getTime());
sectimeold=timeold/1000
secondsold=Math.floor(sectimeold);
msPerDay=24*60*60*1000
e_daysold=timeold/msPerDay
daysold=Math.floor(e_daysold);
e_hrsold=(e_daysold-daysold)*24;
hrsold=Math.floor(e_hrsold);
e_minsold=(e_hrsold-hrsold)*60;
minsold=Math.floor((e_hrsold-hrsold)*60);
seconds=Math.floor((e_minsold-minsold)*60);
span_dt_dt.innerHTML='<font style=color:#C40000>'+daysold+'</font> 天 <font style=color:#C40000>'+hrsold+'</font> 时 <font style=color:#C40000>'+minsold+'</font> 分 <font style=color:#C40000>'+seconds+'</font> 秒';
}
show_date_time();</script>

//网站已运行时间
function display_site_uptime() {
    $start_date = strtotime('YYYY-MM-DD'); // 替换为你的网站上线日期，格式为 YYYY-MM-DD
    $current_date = time();
    
    $uptime_seconds = $current_date - $start_date;
    $uptime_days = floor($uptime_seconds / (60 * 60 * 24));

    echo '本站已运行：' . $uptime_days . ' 天';
}

<?php display_site_uptime(); ?>