源码

<?php
  //数字输出网页计数器
    $max_len = 9;
    $CounterFile = "counter.dat";
    if(!file_exists($CounterFile)){  //如果计数器文件不存在
    $counter = 0;     
    $cf = fopen($CounterFile,"w"); //打开文件
    fputs($cf,'0');     //初始化计数器
    fclose($cf);     //关闭文件
    }else{          //取回当前计数器的值
    $cf = fopen($CounterFile,"r");
    $counter = trim(fgets($cf,$max_len));
    fclose($cf);
    }
    $counter++;         //计数器加一
    $cf = fopen($CounterFile,"w");    //写入新的数据
    fputs($cf,$counter);
    fclose($cf);
?>

<script type="text/javascript">
    function runtime(){
        // 初始时间，月/日/年 时:分:秒
        X = new Date("1/16/2022 17:16:54");
        Y = new Date();
        T = (Y.getTime()-X.getTime());
        M = 24*60*60*1000;
        a = T/M;
        A = Math.floor(a);
        b = (a-A)*24;
        B = Math.floor(b);
        c = (b-B)*60;
        C = Math.floor((b-B)*60);
        D = Math.floor((c-C)*60);
        // 读取访问量
        alert("网站建立: "+A+"天"+B+"时"+C+"分"+D+"秒"+"\n 该网站已被浏览:<?php echo "$counter";?>次")
        //这里的echo,是访问文件的数据了,因为JS读文件内容麻烦
    }
    /*setInterval(runtime, 1000);*/
    runtime()
</script>