备案不关站方法：PHP代码屏蔽地区管局访问IP，不影响百度蜘蛛

 1 <?php
 2 function get_client_ip() {
 3 if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
 4 $ip = getenv("HTTP_CLIENT_IP");
 5 else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"),
 6 "unknown"))
 7 $ip = getenv("HTTP_X_FORWARDED_FOR");
 8 else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
 9 $ip = getenv("REMOTE_ADDR");
10 else if (isset ($_SERVER[‘REMOTE_ADDR‘]) && $_SERVER[‘REMOTE_ADDR‘]
11 && strcasecmp($_SERVER[‘REMOTE_ADDR‘], "unknown"))
12 $ip = $_SERVER[‘REMOTE_ADDR‘];
13 else
14 $ip = "unknown";
15 return ($ip);
16 }
17 header("Content-type: text/html; charset=utf-8");
18 $verification = ‘山东省‘;//修改省份
19 $ip = get_client_ip(); //获取当前用户的ip
20 $antecedents = $_SERVER[‘HTTP_REFERER‘];//访客来路地址
21 $result = file_get_contents("http://ip.taobao.com/service/getIpInfo.php?ip=".$ip);//IP数据库来自淘宝。
22 $address = json_decode($result,true);
23 if($address[‘data‘][‘region‘] == $verification && strpos($antecedents, ‘baidu‘) === false && strpos($antecedents, ‘google‘) === false){
24 sleep(9999999999999999);
25 ob_start();
26 header(‘HTTP/1.1 503 Service Temporarily Unavailable‘);
27 header(‘Status: 503 Service Temporarily Unavailable‘);
28 header(‘Retry-After: 3600‘);
29 echo ‘网站备案中....‘;
30 exit;
31 }
32 ?>