PHP域名授权方法

<?php

//获取不带端口号的域名前缀
$servername = trim($_SERVER['SERVER_NAME']);
//获取服务端授权文件校验
$verifyurl = file_get_contents('http://www.toyean.com/zb_users/upload/copyright.php?domain='.$servername);
if(!empty($verifyurl)){
    echo "已授权！";    //授权成功
}else{
    die("未授权！");    //授权失败
}

?>