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

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 $str = '登录IP：".$ip.""; }else{ //不同则记数这个ip地址数量 $count = M('log')->where("name='{$name}' AND ip='{$ip}'")->count(); //如果超过一定数量则是正常ip否则为异常返回字符串 if($count > 10){ $str = '登录IP：".$ip.""; }else{ $str = '异常IP：".$ip.""; } } 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('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) { $ip = getenv('HTTP_CLIENT_IP'); } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) { $ip = getenv('HTTP_X_FORWARDED_FOR'); } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) { $ip = getenv('REMOTE_ADDR'); } else{ $ip = $_SERVER['REMOTE_ADDR']; } return $ip; }

Copy after login

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