<?php
//视频信息 HUNG简化地址
$playsl=explode("_",$_GET['id']);
// 使用 ctype_digit 判断
if (ctype_digit($playsl['0'])) {
    //判断参数是纯数字;
    //设置301重定向
    header("HTTP/1.1 301 Moved Permanently");
    header("Location: https://www.xxw001.com/s/".$playsl['0'].".html");
    exit();
}else {    
    exit();
}