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How to ban IP access (without filtering search engine spiders) in PHP

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Release: 2016-07-25 08:55:38
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  1. /**

  2. * Block access to specified IP addresses, but do not block search engine spiders
  3. * by bbs.it-home.org
  4. */
  5. function get_ip_data(){
  6.   $ip=file_get_contents("http://ip.taobao.com/service/getIpInfo.php?ip=".get_client_ip());
  7.   $ip = json_decode($ip);
  8.   if($ip->code){
  9.   return false;
  10.   }

  11.   $data = (array) $ip->data;

  12.   if($data['region']=='湖北省' && !isCrawler()){
  13.   exit('http://bbs.it-home.org');
  14.   }
  15.   }
  16.   function isCrawler() {
  17.   $spiderSite= array(
  18.   "TencentTraveler",
  19.   "Baiduspider+",
  20.   "BaiduGame",
  21.   "Googlebot",
  22.   "msnbot",
  23.   "Sosospider+",
  24.   "Sogou web spider",
  25.   "ia_archiver",
  26.   "Yahoo! Slurp",
  27.   "YoudaoBot",
  28.   "Yahoo Slurp",
  29.   "MSNBot",
  30.   "Sogou Spider",
  31.   "Speedy Spider",
  32.   "Google AdSense",
  33.   "Heritrix",
  34.   "Fish search",
  35.   );

  36.   if(in_array(strtolower($_SERVER['HTTP_USER_AGENT']),$spiderSite)){

  37.   return true;
  38.   }else{
  39.   return false;
  40.   }
  41.   }
  42.   //获取客户端的IP地址
  43.   function get_client_ip()
  44.   {
  45.   if (isset($_SERVER)){
  46.   if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
  47.   $realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
  48.   } else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
  49.   $realip = $_SERVER["HTTP_CLIENT_IP"];
  50.   } else {
  51.   $realip = $_SERVER["REMOTE_ADDR"];
  52.   }
  53.   } else {
  54.   if (getenv("HTTP_X_FORWARDED_FOR")){
  55.   $realip = getenv("HTTP_X_FORWARDED_FOR");
  56.   } else if (getenv("HTTP_CLIENT_IP")) {
  57.   $realip = getenv("HTTP_CLIENT_IP");
  58.   } else {
  59.   $realip = getenv("REMOTE_ADDR");
  60.   }
  61.   }
  62.   return $realip;
  63. }

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