基于IP地址的地理位置-PHP

获取Geo-IP信息

请求地理IP服务器（netip.de）进行检查，并返回IP所在的位置（主机，州，国家/地区，城镇）。

<?php       $ip='94.219.40.96';       print_r(geoCheckIP($ip));       //Array ( [domain] => dslb-094-219-040-096.pools.arcor-ip.net [country] => DE - Germany [state] => Hessen [town] => Erzhausen )       //Get an array with geoip-infodata       function geoCheckIP($ip)       {    //check, if the provided ip is valid    if(!filter_var($ip, FILTER_VALIDATE_IP))    { throw new InvalidArgumentException("IP is not valid");    }    //contact ip-server    $response=@file_get_contents('http://www.netip.de/search?query='.$ip);    if (empty($response))    { throw new InvalidArgumentException("Error contacting Geo-IP-Server");    }    //Array containing all regex-patterns necessary to extract ip-geoinfo from page    $patterns=array();    $patterns["domain"] = '#Domain: (.*?)&nbsp;#i';    $patterns["country"] = '#Country: (.*?)&nbsp;#i';    $patterns["state"] = '#State/Region: (.*?)<br#i';    $patterns["town"] = '#City: (.*?)<br#i';    //Array where results will be stored    $ipInfo=array();    //check response from ipserver for above patterns    foreach ($patterns as $key => $pattern)    { //store the result in array $ipInfo[$key] = preg_match($pattern,$response,$value) && !empty($value[1]) ? $value[1] : 'not found';    }    return $ipInfo;       }?>