Example of creating abnormal login IP detection function using PHP-PHP Tutorial-php.cn

Example of creating abnormal login IP detection function using PHP

墨辰丷

Release： 2023-03-28 15:00:01

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This article mainly introduces the example of creating abnormal login IP detection function in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.

Use function query database traversal implementation

/**
 * 不在常用ip地址登录返回描红信息
 * @param string $ip  ip地址
 * @param string $name  用户名
 * @return string
 */

function errorIp($ip,$name){

  $nowip = get_client_ip();
  //判断ip和当前ip是否相同，不同则查询数据库对比
  if($ip == $nowip ){
    //相同直接返回字符串
    $str = &#39;<font color="blue"&#39;.">登录IP：".$ip."</font>";
  }else{
    //不同则记数这个ip地址数量
    $count =  M(&#39;log&#39;)->where("name=&#39;{$name}&#39; AND ip=&#39;{$ip}&#39;")->count();
    //如果超过一定数量则是正常ip否则为异常返回字符串
    if($count > 10){
      $str = &#39;<font color="blue"&#39;.">登录IP：".$ip."</font>";
    }else{
      $str = &#39;<font color="red"&#39;.">异常IP：".$ip."</font>";
    }
  }

  return $str;

}

Copy after login

Note: Suitable for all frameworks, get_client_ip() Is the ip acquisition function.

get_client_ip function fragment:

function get_client_ip() {
  if(getenv(&#39;HTTP_CLIENT_IP&#39;) && strcasecmp(getenv(&#39;HTTP_CLIENT_IP&#39;), &#39;unknown&#39;)) {
    $ip = getenv(&#39;HTTP_CLIENT_IP&#39;);
  } elseif(getenv(&#39;HTTP_X_FORWARDED_FOR&#39;) && strcasecmp(getenv(&#39;HTTP_X_FORWARDED_FOR&#39;), &#39;unknown&#39;)) {
    $ip = getenv(&#39;HTTP_X_FORWARDED_FOR&#39;);
  } elseif(getenv(&#39;REMOTE_ADDR&#39;) && strcasecmp(getenv(&#39;REMOTE_ADDR&#39;), &#39;unknown&#39;)) {
    $ip = getenv(&#39;REMOTE_ADDR&#39;);
  } else{
    $ip = $_SERVER[&#39;REMOTE_ADDR&#39;];
  }
  return $ip;
}

Copy after login

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